Osteoarthritis Treatment & Management
- Author: Carlos J Lozada, MD; Chief Editor: Herbert S Diamond, MD more...
The goals of osteoarthritis treatment include alleviation of pain and improvement of functional status. Optimally, patients should receive a combination of nonpharmacologic and pharmacologic treatment.
Nonpharmacologic interventions, which are the cornerstones of osteoarthritis therapy, include the following:
Heat and cold
Weight loss 
Unloading in certain joints (eg, knee, hip)
A physiatrist may help in formulating a nonpharmacologic management plan for the patient with osteoarthritis, and a nutritionist may help the patient to lose weight. A referral to an orthopedic surgeon may be necessary if the osteoarthritis fails to respond to a medical management plan. Surgical procedures for osteoarthritis include arthroscopy, osteotomy, and (particularly with knee or hip osteoarthritis) arthroplasty.
American College of Rheumatology guidelines
The American College of Rheumatology (ACR) has issued guidelines for pharmacologic treatment of osteoarthritis of the hand, hip, and knee. For hand osteoarthritis, the ACR conditionally recommends using one or more of the following:
Topical nonsteroidal anti-inflammatory drugs (NSAIDs), including trolamine salicylate
The ACR conditionally recommends against using intra-articular therapies or opioid analgesics for hand osteoarthritis. For patients 75 years and older, the ACR conditionally recommends the use of topical rather than oral NSAIDs.
For knee osteoarthritis, the ACR conditionally recommends using one of the following:
Intra-articular corticosteroid injections
The ACR conditionally recommends against using chondroitin sulfate, glucosamine, or topical capsaicin for knee osteoarthritis. The ACR has no recommendations regarding the use of intra-articular hyaluronates, duloxetine, and opioid analgesics.
For hip osteoarthritis, the ACR conditionally recommends using one or more of the following for initial management:
Intra-articular corticosteroid injections
The ACR conditionally recommends against using chondroitin sulfate or glucosamine for hip osteoarthritis. The ACR has no recommendation regarding the use of topical NSAIDs, intra-articular hyaluronate injections, duloxetine, or opioid analgesics.
American Academy of Orthopaedic Surgeons guidelines
A 2013 clinical practice guideline from the American Academy of Orthopaedic Surgeons (AAOS) recommends the following pharmacologic treatments for symptomatic osteoarthritis of the knee :
The AAOS was unable to recommend for or against the use of the following for symptomatic knee osteoarthritis:
Intra-articular corticosteroid injections
Growth factor injections and/or platelet rich plasma
The recommendation on acetaminophen is a downgrade from the previous AAOS guideline, and reflects the use of new criteria that resulted in the selection of only one study, which found no statistical significance or minimum clinically important improvement with acetaminophen compared with placebo.
The AAOS does not recommend treatment with any of the following:
Intra-articular hyaluronic acid
Glucosamine and/or chondroitin sulfate or hydrochloride
Agency for Healthcare Research and Quality findings
A comparison of analgesics for osteoarthritis carried out by the Agency for Healthcare Research and Quality (AHRQ) found that “no currently available analgesic reviewed in this report offers a clear overall advantage compared with the others.” The choice of analgesic for an individual patient should take into account the trade-off between benefits and adverse effects, which differs across analgesics. Patient age, comorbid conditions, and concomitant medication are key considerations.
The AHRQ comparison found that acetaminophen was modestly inferior to NSAIDs in reducing osteoarthritic pain but was associated with a lower risk of GI adverse effects. On the other hand, acetaminophen poses a higher risk of liver injury.
AHRQ findings on adverse effects included the following:
Selective NSAIDs as a class were associated with a lower risk of ulcer complications than were the nonselective NSAIDs naproxen, ibuprofen, and diclofenac
The partially selective NSAIDs meloxicam and etodolac were associated with a lower risk of ulcer-related complications and symptomatic ulcers than were various nonselective NSAIDs
The risk of serious GI adverse effects was found to be higher with naproxen than with ibuprofen
Celecoxib and the nonselective NSAIDs ibuprofen and diclofenac were associated with an increased risk of cardiovascular adverse effects when compared with placebo
The nonselective NSAIDs ibuprofen and diclofenac, but not naproxen, were associated with an increased risk of heart attack when compared with placebo
The AHRQ noted that topical diclofenac was found to have efficacy similar to that of oral NSAIDs in patients with localized osteoarthritis. No head-to-head trials compared topical salicylates or capsaicin with oral NSAIDs for osteoarthritis.
All NSAIDs had deleterious effects on blood pressure, edema, and kidney function. However, the AHRQ found no consistent clinically relevant differences between celecoxib, partially selective NSAIDs, and nonselective NSAIDs with regard to the risk of hypertension, heart failure, or impaired kidney function.
Analgesics, NSAIDs, and COX-2 inhibitors
Begin treatment with acetaminophen for mild or moderate osteoarthritic pain without apparent inflammation. If the clinical response to acetaminophen is not satisfactory or if the clinical presentation of osteoarthritis is inflammatory, consider using an NSAID.
Use the lowest effective dose or intermittent dosing if symptoms are intermittent, then try full doses if the patient’s response is insufficient.
Topical NSAID preparations, particularly diclofenac, are available. These preparations can be particularly useful in patients with symptomatic disease that is limited to a few sites or in patients who are at increased risk for adverse events with systemic NSAIDs.
In patients with highly resistant pain, consider the analgesic tramadol. Options in patients at an elevated risk for GI toxicity from NSAIDs include the addition of a proton-pump inhibitor or misoprostol to the treatment regimen and the use of the selective cyclooxygenase (COX)-2 inhibitor celecoxib instead of a nonselective NSAID.
The selective serotonin-norepinephrine reuptake inhibitor duloxetine has been found to be effective in treating osteoarthritis pain. For example, in patients with knee osteoarthritis who had persistent moderate pain despite optimized NSAID therapy, a randomized, double-blind trial found significant additional pain reduction and functional improvement with duloxetine as compared with placebo.
However, duloxetine was also associated with significantly more nausea, dry mouth, constipation, fatigue, and decreased appetite than placebo was. To date, trials of duloxetine in osteoarthritis have been short in duration (10-13 weeks), and studies comparing duloxetine directly with other therapies have not been performed.
Intra-articular pharmacologic therapy includes injection of a corticosteroid or sodium hyaluronate (ie, hyaluronic acid [HA] or hyaluronan), which may provide pain relief and have an anti-inflammatory effect on the affected joint.[73, 74] Ultrasound guidance can facilitate arthrocentesis and injection and is increasingly being adopted by physicians such as rheumatologists and physiatrists for this purpose.
After the introduction of the needle into the joint and before steroid administration, aspiration of as much synovial fluid as possible should be attempted. Aspiration often provides symptomatic relief for the patient and allows laboratory evaluation of the fluid, if necessary. Infected joint fluid and bacteremia are contraindications to steroid injection.
In patients with osteoarthritic knee pain, steroid injections generally result in clinically and statistically significant pain reduction as soon as 1 week after injection. The effect may last, on average, anywhere from 4 to 6 weeks per injection, but the benefit is unlikely to continue beyond that time frame. For hip osteoarthritis, a randomized, placebo-controlled study confirmed the effectiveness of corticosteroid injection, with benefits often lasting as long as 3 months.
Some controversial evidence exists regarding frequent steroid injections and subsequent damage to cartilage (chondrodegeneration). Accordingly, it is usually recommended that no more than three injections per year be delivered to any individual osteoarthritic joint. Systemic glucocorticoids have no role in the management of osteoarthritis.
For more information, see Corticosteroid Injections of Joints and Soft Tissues.
Intra-articular injection of sodium hyaluronate, also referred to as viscosupplementation, has been shown to be safe and possibly effective for symptomatic relief of knee osteoarthritis.[77, 78] In the United States, intra-articular HAs are classified as medical devices rather than as drugs.
Intra-articular HAs approved by the FDA for the treatment of osteoarthritic knee pain include the naturally extracted, non–cross-linked sodium hyaluronate products Hyalgan, Supartz, Orthovisc, and Euflexxa, as well as the cross-linked sodium hyaluronate product known as hylan G-F 20 (Synvisc).
Euflexxa is derived from a fermentation process (Streptococcus), whereas the source material for the other products listed is chicken combs. At present, no distinct advantage or disadvantage has been associated with any particular source of HA.
Some differences between the viscosupplements do exist in the FDA-approved prescribing information. For example, whereas Hyalgan and Synvisc have been established as safe for repeat treatment, the safety and efficacy of other products for repeat treatment have not been established.
The exact mechanisms of action through which HAs provide symptomatic relief are unknown. Possible mechanisms include direct binding to receptors (CD44 in particular) in the synovium and cartilage that can lead to several biologic activation pathways.[81, 82]
The HA class in general has demonstrated a very favorable safety profile for chronic pain management in knee osteoarthritis, with the most common adverse event being injection-site pain. Although any intra-articular injection (whether of HAs or of steroids) may elicit an inflammatory response and possible effusion, only the cross-linked hylan G-F 20 product has been associated with a clinically distinct acute inflammatory side effect (ie, severe acute inflammatory reaction [SAIR] or HA-associated intra-articular pseudosepsis).
In a randomized, controlled trial of 90 adults with painful knee osteoarthritis who were randomized to either dextrose prolotherapy, saline injections, or at-home exercise, the patients on prolotherapy experienced significantly greater improvement in pain, function, and stiffness over the other 2 groups. Injections were administered at 1, 5, and 9 weeks, with additional injections provided as needed at weeks 13 and 17.
Additional pharmacologic agents
Muscle relaxants may benefit patients with evidence of muscle spasm. Judicious use of narcotics (eg, oxycodone and acetaminophen with codeine) is reserved for patients with severe osteoarthritis.
Glucosamine and chondroitin sulfate have been used in Europe for many years and continue to be popular with patients worldwide. In the United States, however, the glucosamine/chondroitin arthritis intervention trial (GAIT) reported, at best, limited benefit from glucosamine (500 mg 3 times daily), chondroitin sulfate (400 mg 3 times daily), or the combination of the 2 in patients with knee osteoarthritis.[84, 85]
In GAIT patients overall, glucosamine and chondroitin sulfate alone or in combination did not reduce pain effectively at 24 weeks, but in patients with moderate-to-severe pain at baseline, the rate of response was significantly higher with combined therapy than with placebo (79.2% vs. 54.3%). At 2 years, no treatment achieved a clinically important difference in loss of joint-space width, though treatment effects on Kellgren-Lawrence grade 2 knees showed a trend toward improvement relative to the placebo group.
The AHRQ comparison found no clear difference between glucosamine or chondroitin and oral NSAIDs for relieving pain or improving function. However, the AHRQ observed that most trials showing therapeutic benefits from glucosamine used pharmaceutical-grade glucosamine that is not available in the United States, noting that the trial findings may therefore be inapplicable to currently available over-the-counter preparations.
Another agent, S-adenosylmethionine (SAM-e), is a European supplement receiving significant attention in the United States. A systematic review of SAM-e found that the evidence was inconclusive, with a number of small trials of questionable quality; the authors concluded that the effects of SAM-e on pain and function may be potentially clinically relevant but are expected to be small.
Chondroprotective drugs (ie, matrix metalloproteinase [MMP] inhibitors and growth factors) are being tested as disease-modifying drugs in the management of osteoarthritis. For example, MMP-13 is specifically expressed in the cartilage of individuals with osteoarthritis but not in the cartilage of normal adults. German researchers reported on the synthesis and biologic evaluation of an MMP-13 selective inhibitor that has demonstrated efficacy as a disease-modifying intra-articular injection for osteoarthritis.
Other investigational agents include monoclonal antibodies that inhibit nerve growth factor (NGF), such as tanezumab. Anti-NGF agents have been shown to reduce chronic pain in patients with osteoarthritis.[89, 90]
Lifestyle Modification, Physical/Occupational Therapy, and Other Nonpharmacologic Measures
Lifestyle modification, particularly exercise and weight reduction, is a core component in the management of osteoarthritis.[91, 92] Guidelines from Osteoarthritis Research Society International (OARSI) advise that nonpharmacologic treatment of hip and knee osteoarthritis should initially focus on self-help and patient-driven modalities rather than on modalities delivered by health professionals.
The ACR strongly recommends the following nonpharmacologic measures for patients with knee or hip osteoarthritis :
Cardiovascular or resistance land-based exercise
Weight loss, for overweight patients
The ACR conditionally recommends the following measures for patients with knee or hip osteoarthritis:
Manual therapy in combination with supervised exercise
Walking aids, as needed
For patients with knee osteoarthritis, the ACR also conditionally recommends the following measures:
Medially directed patellar taping
Medially wedged insoles for lateral-compartment osteoarthritis
Laterally wedged subtalar strapped insoles for medial-compartment osteoarthritis
For knee osteoarthritis, an American Academy of Orthopaedic Surgeons (AAOS) guideline suggests encouraging patients to participate in self-management educational programs such as those conducted by the Arthritis Foundation and to incorporate activity modifications into their lifestyle (eg, walking instead of running or engaging in alternative activities).
There is substantial evidence regarding the short-term benefits of therapy on pain and function, with long-term effectiveness improved with adherence to home-based exercise programs. However, Bennell et al reported that in 74 patients with medial knee osteoarthritis who completed a 12-week physiotherapist-supervised exercise trial, the addition of two 30-minute physiotherapy booster sessions had no significant influence on pain, physical function outcomes, or measures of home exercise adherence.
Instruct the patient to avoid aggravating stress to the affected joint. Implement corrective procedures if the patient has poor posture.
Weight reduction relieves stress on the affected knees or hips. The benefits of weight loss, whether obtained through regular exercise and diet or through surgical intervention, may extend not only to symptom relief but also to a slowing in cartilage loss in weight-bearing joints (eg, knees). In addition, weight loss lowers levels of the inflammatory cytokines and adipokines that may play a role in cartilage degradation.
Some patients with osteoarthritis benefit from heat placed locally over the affected joint. A minority of patients report relief with ice.
In a study of 26 patients with painful and deforming hand osteoarthritis, rigid, custom splints worn nightly on one arthritic finger joint per patient for three months significantly reduced pain in 17 of the 23 patients (74%) who completed the study. Average pain remained significantly lower in splinted joints compared with non-splinted joints three months after patients stopped using the splints.[98, 99]
Although people with osteoarthritis tend to avoid activity, exercise is an effective treatment for this condition, producing improvements in pain, physical function, and walking distance. Long-term walking and resistance-training programs have been shown to slow the functional decline seen in many patients with osteoarthritis, including older patients.
In a systematic review and meta-analysis of 48 randomized controlled trials, Juhl and colleagues found that the optimal exercise program for reducing pain and patient-reported disability in knee osteoarthritis should have a single aim, which can be improving aerobic capacity, strengthening the quadriceps muscle, or improving lower extremity performance. For best results, the exercise program should be supervised and performed 3 times weekly.
Osteoarthritis of the knee may result in disuse atrophy of the quadriceps. Because these muscles help protect the articular cartilage from further stress, quadriceps strengthening is likely to benefit patients with knee osteoarthritis. Stretching exercises are also important in the treatment of osteoarthritis because they increase range of motion.
In a study of patients with knee osteoarthritis, Jan et al found that in most respects, non–weight-bearing exercise was as therapeutically effective as weight-bearing exercise. After an 8-week exercise program, the 2 types of exercise resulted in equally significant improvements in function, walking speed, and muscle torque. However, patients in the weight-bearing group demonstrated greater improvement in position sense, which may help patients with complex walking tasks, such as walking on a spongy surface.
Chaipinyo and Karoonsupcharoen found no significant difference between home-based strength training and home-based balance training for knee pain caused by osteoarthritis. However, greater improvement in knee-related quality of life was noted in the strength-training group.
The importance of aerobic conditioning, particularly low-impact exercises (if osteoarthritis is affecting weight-bearing joints), should be stressed as well. Swimming, especially the aerobic aquatic programs developed by the Arthritis Foundation, can be helpful.
The benefits of exercise have been found to decline over time, possibly because of poor adherence. Factors that determine adherence to exercise have not been carefully studied in patients with osteoarthritis. In a review of this topic, Marks and Allegrante concluded that interventions to enhance self-efficacy, social support, and skills in the long-term monitoring of progress are necessary to foster exercise adherence in people with osteoarthritis.
A prospective, single-blind, randomized, controlled study by Wang et al suggested that tai chi is a potentially effective treatment for pain associated with osteoarthritis of the knee. In this trial, 40 patients with symptomatic tibiofemoral osteoarthritis who performed 60 minutes of tai chi twice weekly for 12 weeks experienced significantly greater pain reduction than did control subjects who underwent 12 weeks of wellness education and stretching.
The mean difference in Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) pain scores was −118.80 mm. The tai chi cohort also had significantly better WOMAC physical function scores, patient and physician global visual analog scale scores, chair stand times, Center for Epidemiologic Studies Depression Scale scores, self-efficacy scores, and Short Form 36 physical component summaries.
A subsequent trial by Wang et al that compared tai chi (2 times per week for 12 weeks) with standard physical therapy (2 times per week for 6 weeks, followed by 6 weeks of monitored home exercise), reported substantial and comparable reductions in WOMAC scores in both patient groups, as well as smilar clinically significant improvement in most secondary outcomes, and the benefits were maintained up to 52 weeks. Furthermore, the tai chi group had significantly greater improvements in depression and the physical component of quality of life.
A systematic review and meta-analysis concluded that research results are encouraging and suggest that tai chi may be effective in controlling pain and improving physical function in patients with knee osteoarthritis. The researchers noted, however, that the strength of the evidence is limited by the small number of randomized, controlled trials with a low risk of bias.
The use of assistive devices for ambulation and for activities of daily living (ADLs) may be indicated for patients with osteoarthritis. Braces may also be of some use. A cane can be used in the contralateral hand for hip or knee osteoarthritis. The patient can be taught joint-protection and energy-conservation techniques.
In a randomized study of 126 patients with painful knee osteoarthritis, wearing a slip-on knee brace for a median of 7.35 hours a day for 6 weeks reduced pain and bone marrow lesions. Pain scores during activity declined about 18 points in patients using the brace, but showed almost no change in those not wearing the brace. MRIs revealed that bone marrow lesion volumes in the patellofemoral joint, which were nearly identical at baseline in both groups, had decreased by 25% after 6 weeks in patients in the brace group.
For patients with hand osteoarthritis, the ACR conditionally recommends evaluating the patient’s ability to perform ADLs and providing assistive devices as needed. The ACR conditionally recommends splints for patients with trapeziometacarpal joint involvement.
For knee osteoarthritis, guidelines recommend appropriate footwear as part of self-management. However, a randomized trial by Hinman et al that compared shoes designed to unload the knee versus new conventional shoes found that both groups showed comparable improvement in pain with walking as well as other benefits. In the trial, the intervention group received walking shoes with triple-density, variable-stiffness midsoles and mild lateral-wedge insoles designed to unload the medial knee and worn daily, while the control group received supportive lace-up walking shoes.
Occupational therapy and physical therapy
Occupational adjustments may be necessary for some patients with osteoarthritis. An occupational therapist can assist with evaluating how well the patient performs ADLs, as well as with retraining of the patient as necessary. Joint-protection techniques should be emphasized. Physical therapy modalities, especially those aimed at deconditioned patients, can be helpful, particularly in patients with hip or knee involvement.
Electromagnetic field stimulation and TENS
A pulsed electromagnetic field stimulation device (Bionicare) has been approved by the US Food and Drug Administration (FDA) for use in patients with knee osteoarthritis. Pulsed electromagnetic field stimulation is believed to act at the level of articular cartilage by maintaining the proteoglycan composition of chondrocytes through downregulation of its turnover.
A multicenter, double-blind, randomized, placebo-controlled 4-week trial in 78 patients with knee osteoarthritis found improved pain and function in those who were treated with the device. A double-blind, placebo-controlled 3-month trial in 58 patients with moderate-to-severe knee osteoarthritis showed that the use of a highly optimized, capacitively coupled, pulsed electrical stimulus device yielded significant symptomatic and functional improvement.
Another randomized clinical trial demonstrated that pulsed short-wave treatment was effective in relieving pain and improving function and quality of life in women with knee osteoarthritis on a short-term basis; additional studies are needed to validate the 12-month follow-up.
Transcutaneous electrical nerve stimulation (TENS) may be another treatment option for pain relief. To date, however, there is only limited evidence that TENS is beneficial in this setting. A systematic review could not confirm that TENS is effective for pain relief in knee osteoarthritis. A randomized controlled trial found that TENS applied in conjunction with therapeutic exercise and daily activities increased quadriceps activation and function in patients with tibiofemoral osteoarthritis.
Acupuncture is becoming a more frequently used option for treatment of the pain and physical dysfunction associated with osteoarthritis. Some evidence supports its use. For example, a review article of randomized, controlled trials reported that the level of pain persisting after acupuncture was significantly lower than the level of pain persisting after control treatments.
Several groups have issued guidelines regarding acupuncture for knee osteoarthritis. The AAOS neither recommends nor opposes the use of acupuncture for pain relief in knee osteoarthritis, citing inconclusive evidence. OARSI suggests that acupuncture may yield symptomatic benefit in these patients. The ACR recommends traditional Chinese acupuncture for patients with chronic moderate-to-severe pain who would be candidates for total knee arthroplasty but who either do not want it or have contraindications to it.
A procedure of low invasiveness and morbidity, arthroscopy will not interfere with future surgery. However, a randomized, controlled trial in patients with moderate-to-severe osteoarthritis found that arthroscopic surgery for osteoarthritis of the knee provided no additional benefit beyond that afforded by optimized physical and medical therapy.
Arthroscopy is indicated for removal of meniscal tears and loose bodies; less predictable arthroscopic procedures include debridement of loose articular cartilage with a microfracture technique and cartilaginous implants in areas of eburnated subchondral bone (see the images below). These treatments have varying success rates and should be performed only by surgeons experienced in arthroscopic surgical techniques.[10, 117, 118] Overall, arthroscopy is not recommended for nonspecific “cleaning of the knee” in osteoarthritis.
Patients who undergo arthroscopy usually require a period of crutch use or exercise therapy. This period typically lasts days but sometimes extends for weeks.
Osteotomy is used in active patients younger than 60 years who have a malaligned hip or knee joint and want to continue with reasonable physical activity. The principle underlying this procedure is to shift weight from the damaged cartilage on the medial aspect of the knee to the healthy lateral aspect of the knee. Osteotomy is most beneficial for significant genu varum, or bowleg deformity. (The effectiveness of osteotomy for genu valgum is not highly predictable.)
Osteotomy often can help individuals avoid requiring a total knee replacement until they are older. It can lessen pain, but it can also lead to more challenging surgery if the patient later requires arthroplasty.
A follow-up study of 147 opening-wedge high tibial osteotomies in a consecutive series of patients affected by varus knee malalignment with isolated medial compartment degenerative joint disease reported good or excellent results in 94% of cases. Follow-up averaged 9.5 years, with a range of 7 to 12 years.
Contraindications for osteotomy are as follows:
Knee flexion of less than 90°
A flexion-extension contracture of more than 15°
Varus over 15°-20°
Instability from previous trauma or surgery
Severe arterial insufficiency
Patients undergoing osteotomy require partial weight-bearing until bony healing occurs. Afterward, exercise is indicated.
Arthroplasty consists of the surgical removal of joint surface and the insertion of a metal and plastic prosthesis (see the images below). The prosthesis is held in place by cement or by bone ingrowth into a porous coating on the prosthesis. The use of cement results in faster pain relief, but bone ingrowth may provide a more durable bond; accordingly, prostheses with a porous coating are used in younger patients.
Arthroplasty is performed if all other modalities are ineffective and osteotomy is not appropriate or if a patient cannot perform ADLs despite maximal therapy.[121, 122] This procedure alleviates pain and may improve function. At a minimum, 10-15 years of viability are expected from joint replacement in the absence of complications.
Infection is a particular postoperative concern in cases of total joint replacement. This complication is now rare, however, especially with the use of perioperative antibiotics.
Prevention of thrombophlebitis and resultant pulmonary embolism is important in patients who undergo lower-extremity arthroplasty procedures for osteoarthritis. The surgeon must use all means available to prevent these complications. Early motion and ambulation, when possible, are of particular importance. The use of low-molecular-weight heparin or warfarin is also indicated.
After joint replacement, patients require partial weight-bearing, which progresses to full weight-bearing in 1-3 months; range-of-motion and strengthening exercises are started within a few days after joint-replacement surgery and continued until the patient has good range of motion and strength. After resection arthroplasty of the hip, patients require instruction in the use of crutches or a walker, which are usually needed permanently.
For more information, see the following articles:
Total Knee Arthroplasty
Unicompartmental Knee Arthroplasty
Surgical Treatment of Interphalangeal Joint Arthritis
Minimally Invasive Total Hip Arthroplasty
American Academy of Orthopaedic Surgeons guidelines on total knee arthroplasty
A 2016 guideline on surgical management of knee osteoarthritis from the American Academy of Orthopaedic Surgeons (AAOS) includes the following recommendations regarding total knee arthroplasty (TKA) :
Obese patients have less improvement in outcomes (strong supporting evidence)
Patients with diabetes are at higher risk for complications (moderate evidence)
Patients with select chronic pain conditions have less improvement in patient-reported outcomes (moderate)
Patients with depression and/or anxiety symptoms have less improvement in patient-reported outcomes (limited)
Patients with cirrhosis or hepatitis C are at higher risk for complications (limited)
An 8-month delay to TKA does not worsen outcomes (moderate)
Supervised exercise before TKA might improve pain and physical function after surgery (limited)
Compared with placebo, peri-articular local anesthetic infiltration in TKA decreases pain and opioid use (strong)
Compared with general anesthesia, neuraxial anesthesia can improve select perioperative outcomes and complication rates (moderate)
Use of a tourniquet in TKA decreases intraoperative blood loss (moderate) but increases short-term postoperative pain (strong) and decreases short- term postoperative function (limited)
In patients with no known contraindications, treatment with tranexamic acid decreases postoperative blood loss and reduces the necessity of postoperative transfusions (strong)
Routine use of antibiotics in the cement for primary TKA is not recommended (limited)
Outcomes and complications are no different with posterior-stabilized versus posterior cruciate–retaining arthroplasty designs
Outcomes are no different with either all-polyethylene or modular tibial components (strong)
Use of patellar resurfacing makes no difference in pain or function (strong), but could decrease cumulative reoperations after 5 years (moderate)
Cemented or cementless tibial component fixation provides similar functional outcomes and rates of complications and reoperations (strong)
Use of either cemented or cementless femoral and tibial components results in similar rates of complications and reoperations (moderate)
Either cementing all components or using hybrid fixation (cementless femur) results in similar functional outcomes and rates of complications and reoperations. (moderate)
Use of either all cementless components or hybrid fixation (cementless femur) results in similar rates of complications and reoperations (limited)
Simultaneous bilateral TKA can be performed in patients aged 70 or younger or with American Society of Anesthesiologists (ASA) status 1-2, because there are no increased complications (limited)
In patients with medial compartment osteoarthritis, revision surgery risk could be lower with TKA than with (moderate); however, risk of deep venous thrombosis and manipulation under anesthesia may be higher with TKA) than with unicompartmental knee arthroplasty (limited)
In patients with medial compartment knee osteoarthritis, there is no difference in outcome and complications with unicompartmental knee arthroplasty versus valgus-producing proximal tibial osteotomy (moderate)
Using intraoperative navigation makes no difference in outcomes or complications (strong)
Compared with conventional instrumentation, use of patient-specific instrumentation for TKA makes no difference in pain or functional outcomes (strong) or in transfusions or complications (moderate)
Use of a drain with TKA makes no difference in complications or outcomes (strong)
Use of cryotherapy devices after TKA does not improve outcomes (moderate)
Postoperative continuous passive motion (CPM) does not improve outcomes (strong)
Rehabilitation started on the day of surgery reduces length of hospital stay (strong), and reduces pain and improves function compared with rehabilitation started on postoperative day 1 (moderate)
A supervised exercise program during the first 2 months after TKA improves physical function (moderate) and may decrease pain (limited)
Selected patients might be referred to an intensive supervised exercise program during late-stage post-TKA to improve physical function (limited)
Fusion and Joint Lavage
Fusion consists of the union of bones on either side of the joint. This procedure relieves pain but prevents motion and puts more stress on surrounding joints. Fusion is sometimes used after knee replacements fail or as a primary procedure for ankle or foot arthritis.
Observational studies suggested a benefit for joint lavage. However, sham-controlled trials yielded conflicting results, and a meta-analysis concluded that joint lavage does not result in pain relief or improvement of function in patients with knee osteoarthritis.
Overweight patients who have early signs of osteoarthritis or who are at high risk should be encouraged to lose weight. Recommend quadriceps-strengthening exercises in patients with osteoarthritis of the knees, except in those with pronounced valgus or varus deformity at the knees. (See Lifestyle Modification, Physical/Occupational Therapy, and Other Nonpharmacologic Measures.)
It has been proposed that low vitamin D levels may play a role in the development and progression of osteoarthritis; however, studies of vitamin D status and osteoarthritis have produced conflicting results.[125, 126]
A systematic review found no convincing evidence that selenium, vitamin A, or vitamin C is effective for the treatment of osteoarthritis. A prospective cohort study also found no evidence that vitamin C supplementation slowed the progression of knee osteoarthritis; however, it did find that patients who reported taking vitamin C were 11% less likely to develop knee osteoarthritis.
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