Physical Medicine and Rehabilitation for Stress Fractures Clinical Presentation

  • Author: Jonathan C Reeser, MD, PhD; Chief Editor: Consuelo T Lorenzo, MD   more...
 
Updated: Mar 25, 2010
 

History

The most salient historical feature in the diagnosis of stress fracture is the insidious onset of activity-related pain.

  • Early on, the pain typically is mild and occurs toward the end of the inciting activity.
  • Subsequently, the pain may worsen and occur earlier, limiting participation in sports activities.
    • While rest may provide transient relief of symptoms in the early stages, as the stress injury progresses, the athlete's pain may persist even after cessation of activity.
    • Night pain is a frequent complaint.
    • Pain resulting from long-bone fractures is thought to be localized, while pain associated with stress injury of trabecular bone is characteristically described as more diffuse.
  • Stress fractures, like most overuse injuries, typically are multifactorial in etiology; thus, if the diagnosis has been made or is suspected, the clinician is in the position to try to determine what risk factors precipitated or contributed to the injury.
    • Details of the athlete's training history should be noted, both in terms of volume and intensity.
    • Intensive sustained muscular activity may result in bone strain and overload. This type of mechanism of injury is common in rowers, who are prone to stress fractures of the ribs.
  • Muscle fatigue, perhaps because of poor conditioning or as the result of overtraining, can attenuate the shock-absorbing capacity of the muscular system, resulting in greater transmission of GRFs to the associated parts of the skeleton.
  • Structural malalignments (eg, leg-length discrepancies) or biomechanical inefficiencies (eg, excessive subtalar pronation) can result in increased stress and strain on the tibiae.
  • Concurrent injury may result in subclinical biomechanical adaptations along the kinetic chain, placing atypical loads on bone and precipitating a stress injury.
  • Poor bone health, whether because of hormonal, dietary, or pathological causes (eg, osteoporosis, hyperparathyroidism, skeletal involvement from malignancy), can weaken bone and make it more susceptible to injury.
  • These conditions and other intrinsic and extrinsic risk factors for the development of stress fractures are summarized in Causes below.
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Physical

Upon physical examination, individuals with stress fractures typically report pain upon palpation or percussion of the affected area.

  • Inspection of the site may reveal localized swelling and, possibly, erythema.
  • Loading the affected bone using specific maneuvers (such as the "hop test" or the "fulcrum test") may reproduce the athlete's pain. Note that no single physical examination test is sufficiently sensitive and specific to permit the unequivocal diagnosis of a stress fracture. Rather, taking the individual's history and examination into consideration, the clinician must have sufficient clinical suspicion to include the diagnosis among the different possible causes of the presenting complaints.
  • Some practitioners believe that application of a vibrating tuning fork over the affected bone can provoke the athlete's pain, but Brukner et al dispute the validity of this test.[5]
  • As part of a thorough physical examination, the practitioner should assess the athlete's flexibility, lower limb alignment (including leg lengths), foot structure (eg, pes cavus vs pes planus), and motor function (eg, evaluating for strength imbalances).
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Causes

Disrupted bone homoeostasis and inadequate repair in the face of repetitive overload cause stress fractures. A variety of risk factors are thought to predispose individuals to the development of stress fractures.

  • Intrinsic risk factors
    • Low BMD (potentially modifiable)
    • Lower limb malalignment (potentially modifiable)
    • Foot structure (unmodifiable)
    • Height - Tall stature (unmodifiable)
    • Muscle fatigue/poor overall conditioning (modifiable)
    • Weakness/strength imbalance (modifiable)
    • Pathologic bone states (potentially unmodifiable)
    • Menstrual/hormonal irregularities (potentially modifiable)
    • Genetic predisposition (unmodifiable)
  • Extrinsic risk factors
    • Excessive volume or intensity of training (modifiable)
    • Sporting discipline (modifiable) - For example, runners are prone to tibial shaft stress fractures, whereas tennis players appear to be most vulnerable to navicular injuries, and volleyball players may be at a relatively increased risk of pars interarticularis injuries.
    • Change in training regimen - "New coach" phenomenon (potentially modifiable)
    • Change in training surface - Density or topography (modifiable)
    • Worn-out training shoes (modifiable)
    • Cigarette smoking (modifiable)
    • Inadequate nutrition - Energy (calories), calcium, vitamin D (modifiable)
    • Medication usage - For example, chronic steroid use (potentially modifiable)
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Contributor Information and Disclosures
Author

Jonathan C Reeser, MD, PhD  Office of Research Integrity and Protections, Marshfield Clinic Research Foundation

Jonathan C Reeser, MD, PhD is a member of the following medical societies: Alpha Omega Alpha, American College of Sports Medicine, American Medical Association, Association of Academic Physiatrists, Phi Beta Kappa, and State Medical Society of Wisconsin

Disclosure: Nothing to disclose.

Specialty Editor Board

Everett C Hills, MD, MS  Vice Chair, Department of Physical Medicine and Rehabilitation, Medical Director for Outpatient Services, Penn State Hershey Rehabilitation Hospital, Assistant Professor of Physical Medicine and Rehabilitation, Assistant Professor of Orthopaedics and Rehabilitation, Penn State Milton S Hershey Medical Center and Penn State University College of Medicine

Everett C Hills, MD, MS is a member of the following medical societies: American Academy of Disability Evaluating Physicians, American Academy of Physical Medicine and Rehabilitation, American College of Physician Executives, American Congress of Rehabilitation Medicine, American Medical Association, American Society of Neurorehabilitation, Association of Academic Physiatrists, and Pennsylvania Medical Society

Disclosure: Nothing to disclose.

Francisco Talavera, PharmD, PhD  Senior Pharmacy Editor, eMedicine

Disclosure: eMedicine Salary Employment

Michael T Andary, MD, MS  Professor, Residency Program Director, Department of Physical Medicine and Rehabilitation, Michigan State University College of Osteopathic Medicine

Michael T Andary, MD, MS is a member of the following medical societies: American Academy of Physical Medicine and Rehabilitation, American Association of Neuromuscular and Electrodiagnostic Medicine, American Medical Association, and Association of Academic Physiatrists

Disclosure: Allergan Honoraria Speaking and teaching; Pfizer Honoraria Speaking and teaching

Kelly L Allen, MD  Medical Director, Medevals

Disclosure: Nothing to disclose.

Chief Editor

Consuelo T Lorenzo, MD  Consulting Staff, Department of Physical Medicine and Rehabilitation, Alegent Health, Immanuel Rehabilitation Center

Consuelo T Lorenzo, MD is a member of the following medical societies: American Academy of Physical Medicine and Rehabilitation

Disclosure: Nothing to disclose.

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This image is of a 17-year-old male wrestler with a 2-month history of left-sided low back pain, worse with extension. Total body scintigraphy findings were unremarkable. Courtesy of Michael Spieth, MD, and Nandita Bhattacharjee, MD, MHA; Marshfield Clinic Department of Radiology.
Same patient as in the above image. Single-photon emission computed tomography (SPECT) images demonstrate abnormal delayed uptake in the posterior elements of L5. Courtesy of Michael Spieth, MD, and Nandita Bhattacharjee, MD, MHA; Marshfield Clinic Department of Radiology.
Same patient as in the above 2 images. Subsequent MRI revealed an area of bright signal in the left pars interarticularis of L5 on T2-weighted images, confirming the diagnosis of acute unilateral spondylolysis. The patient was treated successfully with activity restriction and bracing with a lumbar corset for 3 months, at which point he was asymptomatic. Plain film imaging at follow-up (not shown) was unremarkable, with no evidence of spondylolysis on oblique views. Courtesy of Michael Spieth, MD, and Nandita Bhattacharjee, MD, MHA; Marshfield Clinic Department of Radiology.
A 17-year-old female dancer with a 2-week history of left shin pain. Plain film imaging was unremarkable. Three-phase bone scanning demonstrated an area of linear uptake in the posterior medial aspect of the left tibia on blood pool images, but delayed images were considered normal. This scintigraphic pattern is consistent with medial tibial stress syndrome (shin splints), but not with stress fracture. Courtesy of Michael Spieth, MD, and Nandita Bhattacharjee, MD, MHA; Marshfield Clinic Department of Radiology.
This is a 55-year-old female industrial worker with a 1-week history of right foot pain. Plain film imaging was unremarkable. Bone scanning revealed a stress fracture of the second metatarsal. Courtesy of Michael Spieth, MD, and Nandita Bhattacharjee, MD, MHA; Marshfield Clinic Department of Radiology.
This image is of an 18-year-old female soccer player with a 3-week history of left leg pain, which was worse at night and with activity. Upon examination, she reported tenderness in response to palpation over the midtibia. Bilateral pes planus was noted. Plain film radiography failed to demonstrate a fracture. Bone scanning revealed a focal area of delayed uptake on the posterior medial aspect of the proximal third of the left tibia, confirming the diagnosis of stress fracture. Courtesy of Michael Spieth, MD, and Nandita Bhattacharjee, MD, MHA; Marshfield Clinic Department of Radiology.
A 63-year-old man with metastatic thyroid carcinoma went for a walk and awoke the following morning with left hip girdle pain. Plain film imaging revealed a subtle area of linear cortical lucency at the proximal left femoral metadiaphysis, consistent with an insufficiency fracture through pathologic bone. The patient subsequently underwent internal fixation. Courtesy of Michael Spieth, MD, and Nandita Bhattacharjee, MD, MHA; Marshfield Clinic Department of Radiology.
Enlarged view of the fracture shown in the above image. Plain film imaging revealed a subtle area of linear cortical lucency at the proximal left femoral metadiaphysis, consistent with an insufficiency fracture through pathologic bone. The patient subsequently underwent internal fixation. Courtesy of Michael Spieth, MD, and Nandita Bhattacharjee, MD, MHA; Marshfield Clinic Department of Radiology.
This case involves a 16-year-old female basketball player with a 2-year history of left foot pain refractory to casting and reduced weight bearing. Bone scanning revealed a focal area of delayed uptake lateral to the left first metatarsal phalangeal joint, which corresponded to a bipartite sesamoid on plain films. Courtesy of Michael Spieth, MD, and Nandita Bhattacharjee, MD, MHA; Marshfield Clinic Department of Radiology.
Sesamoid stress fractures are prone to nonunion, and sesamoidectomy is indicated for patients who do not respond to conservative management. Some clinicians recommend bone grafting as an alternative to complete or partial sesamoidectomy. Courtesy of Michael Spieth, MD, and Nandita Bhattacharjee, MD, MHA; Marshfield Clinic Department of Radiology.
 
 
 
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