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Hand Tendon Transfers

  • Author: Steffen Baumeister, MD; Chief Editor: Joseph A Molnar, MD, PhD, FACS  more...
 
Updated: Jul 30, 2015
 

Background

Paralysis of the upper extremity produces major functional impairment. The ability to perform activities of daily life can be severely compromised, especially in bilateral paralysis. When muscle-tendon units remain functional in an extremity, consider sacrificing one function to restore another by transferring the working unit to a new location. Restoring something as simple as a pinch grip can create major improvement in the function of the extremity.

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History of the Procedure

Tendon transfers have been used in upper extremity reconstruction for well over a century. Early on, the technique was used for reconstruction following obstetric brachial plexus palsy or paralysis secondary to polio. When hand surgery evolved as a subspecialty, transfer techniques expanded. The middle part of the 20th century saw the development of transfers for multiple peripheral nerve paralyses, including median, ulnar, and radial nerve palsies. Multiple surgeons contributed to the field, including Bunnell, Boyes, Brand, Burkhalter, Goldner, Littler, Moberg, Omer, Phalen, Riordan, and Zancolli.[1, 2, 3, 4, 5]

In the latter part of the century, microvascular techniques were developed that added free muscle transfers as a possible tool for paralysis reconstruction. While newer techniques of functional electrical stimulation and microvascular transfer have added new dimensions to reconstruction, tendon transfer remains a primary tool in upper extremity paralysis management.

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Problem

Loss of hand function secondary to neuromuscular paralysis, tendon loss, or muscle loss can dramatically reduce a person's ability to perform normal activities of daily life.[6] The prospect of restoring function through transfer of a muscle-tendon unit to perform one of the lost functions is enthusiastically accepted by the patient and rewarding to the surgeon. Tendon transfers may also be useful in restoring function in patients with spastic disorders due to cerebral palsy or stroke. (For more information, visit Medscape’s Stroke/Cerebrovascular Disease Resource Center.

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Etiology

Motor dysfunction or paralysis in the upper extremities is due to traumatic or nontraumatic causes.

Direct trauma

Most commonly, trauma causes a direct, primary injury to the peripheral nervous system or the muscles and tendons. Penetrating injuries can result in transection of the median, ulnar, or radial nerves or more centrally in the brachial plexus. Blunt trauma less often affects the more peripheral nerves but is often the cause of brachial plexus or nerve root injuries. Any of the motor functions in the upper extremity may be compromised by injury to the brachial plexus or nerve roots.

Direct trauma is also the leading cause of spinal cord injuries resulting in upper extremity paralysis. Paralysis from a cord injury often results in bilateral loss of function, although the losses may be different between sides.

Indirect trauma

Rupture of the extensor pollicis longus (EPL) tendon is a common complication secondary to a distal radial fracture. Anatomically, the EPL tendon runs through the third extensor compartment and around the Lister tubercles. In this site, the EPL is prone to injury as a result of bony malalignment or iatrogenic injury after osteosynthesis, commonly after screw insertion from the palmar side. The EPL usually ruptures several weeks after the initial injury.

Neurological

Paralysis of neurologic origin may also occur from causes other than trauma, but this tends to be less responsive to surgical solutions. These causes include stroke and neurologic diseases such as multiple sclerosis or cerebral palsy.

Rheumatological

Specific loss of tendon or muscle substance can arise from rheumatologic causes, including gout and pseudogout. The tendons are usually destroyed by pannus formation, chronic inflammatory processes, uric acid, or calcium pyrophosphate depositions. These factors cause enough destruction of tendon substance that tendon transfers are required to replace lost function. Direct suture repair is not usually possible. Rheumatoid arthritis may be responsible for tendon rupture of any of the hand and wrist tendons, but it commonly leads to rupture of extensor tendons of the fingers or thumb.

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Pathophysiology

Any interruption of the neurologic-muscular-tendinous chain results in paralysis. As outlined above, this may be due to tendon or muscle destruction, but it usually results from denervation. Therefore, physiologic considerations in upper limb paralysis first include the status of innervation. A scale from 1-5 is used to classify nerve injuries. The classification (and Sneddon classification when applicable), with the anatomical correction (definition) and recovery prognosis, is as follows:

  • Grade 1
    • Seddon classification - Neurapraxia
    • Axonal continuity preserved
    • Fast and complete recovery
  • Grade 2
    • Seddon classification - Axonotmesis
    • Axon injury but endoneurial sheath intact; no fibrosis or structural injury
    • Slow but complete recovery
  • Grade 3
    • Axon injury plus endoneurial sheath destroyed; perineurium intact; variable fibrosis
    • Slow and variable recovery
  • Grade 4
    • Axon injury plus fascicular structure of nerve destroyed/perineurium destroyed; complete fibrosis
    • No recovery
  • Grade 5
    • Sneddon classification - Neurotmesis
    • Loss of continuity of nerve trunk
    • No recovery

Classification of nerve injury according to Sunderland

Paralysis may be temporary, as in grade 1 or 2 injury, or permanent, as in grade 4 or 5 nerve injury. In grade 1 and 2 injuries, no intervention is needed and full recovery is expected.[7]

Denervated muscle usually loses its ability to accept reinnervation or respond to low-amplitude electrical stimulation after 9-18 months. Once the muscle has reached a point that it no longer accepts reinnervation reconstructive efforts, tendon transfers or assistive devices are required. In addition, as denervated muscle becomes fibrotic and contracted, the fibrosis may have a negative effect on the suppleness of muscles and joints. Thus, early treatment while awaiting motor reconstruction should include therapy to maintain supple joints, which is imperative for any tendon transfer. For these reasons, it is important in the acute and subacute care after an injury that produced paralysis to identify the grade 4 and 5 injuries as early as possible so that appropriate intervention can be attempted.

Spinal cord paralysis presents a special consideration because the paralysis may be either upper or lower motor neuron in origin. In paralysis with an intact lower motor neuron, the muscle remains sensitive to low-amplitude stimulation. Because the muscle remains innervated, it remains indefinitely receptive to reinnervation from a nerve transfer. If the paralysis includes lower motor neuron injury, early nerve transfer or long-term tendon transfer is the only reconstructive option other than traditional assistive devices.

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Presentation

History

The following must be addressed in the patient history:

  • The etiology of paralysis (ie, traumatic [eg, disruption of nerve, muscle, tendon] vs nontraumatic [eg, neurological/rheumatological])
  • The exact mechanism and timing of any injury
  • Previous treatments
  • Patient expectations and compliance

Traumatic and nontraumatic

  • Traumatic: High-energy wounds (eg, gunshot wounds) may produce nerve injuries of widely varying degrees. Some of these can be expected to recover spontaneously. Others are grade 4 and 5 injuries that may span long segments. Central gunshot wounds tend to produce unpredictable patterns of both upper and lower motor neuron injury. Conversely, low-energy injuries (eg, sharp penetrating wounds) produce disruption of the peripheral nerve in short segments, making these appropriate for successful nerve repair. For blunt injuries, the grade of injury is difficult to determine initially.
  • Nontraumatic: A history of rheumatoid arthritis, other synovial arthritis, or gout/pseudogout raises the suggestion of tendon rupture. Rupture secondary to synovial processes almost always requires tendon transfers or grafts. Direct repair is not usually possible because of segmental loss of tendon substance. In otherwise healthy individuals, a recent history of viral illness suggests paralysis of viral origin, such as anterior interosseous nerve palsy. Limited observation may be indicated in these patients.

Patient expectations and compliance

An important part of the history includes determining the expectations of the patient regarding long-term function. The patient's expectations need to be appropriate to the options available. A patient with overly ambitious expectations may be quite unhappy with more modest outcomes. In addition, tendon transfers require a lengthy recovery period and should not be performed in patients who will not or cannot adequately comply with therapy.

Physical examination

The physical examination should be thorough, with particular concern to the status of joints, the status of sensation, soft tissue coverage, which muscles are functioning, and which functions are missing. The authors' preference is to record sensation by dermatome, note soft tissue coverage, and record the suppleness of all involved joints. The authors proceed from proximal to distal with a manual muscle examination.

This starts with examination of the shoulder, with attention to the function of the deltoid (anterior, middle, posterior), latissimus, and pectoralis, and an assessment of shoulder subluxation. Next, test the triceps and biceps group, then the brachioradialis (BR). The examination should assess functions of pronation, supination, wrist extension, and flexion. With wrist extension, the authors attempt to determine whether extension is produced by only the extensor carpi radialis longus (ECRL) or by both the ECRL and the extensor carpi radialis brevis (ECRB). Differentiating between extension produced by the ECRL or both the ECRL and the ECRB may be difficult and ultimately requires examination in the operating room. Because both the flexor carpi radialis and the flexor carpi ulnaris (FCU) may be useful for transfers, determine the function of both.

Next, the function of finger and thumb flexion and extension is checked. This is followed by evaluation of the intrinsic muscle function of the hand. Of particular concern are opposition of the thumb and the presence of "clawing" of any fingers, as shown below.

Ulnar clawing produced by loss of intrinsics to th Ulnar clawing produced by loss of intrinsics to the little and ring fingers, characterized by hyperextension of the metacarpophalangeal joints and flexion of the interphalangeal joints.

After identifying lost function, the examiner should assess that joints are supple and passively unrestricted in movement. Only under this premise is tendon transfer possible.

Finally, the donor muscles and tendons must be checked for presence and function. The palmaris longus tendon can be felt in wrist flexion with opposition of the thumb and little finger. The extensor indicis proprius tendon usually lies ulnarly of the extensor digitorum communis (EDC)–2 tendon. It is present if the index finger can be extended with complete flexion of the other fingers.

A thorough examination may also help to determine the etiology of the paralysis. This is especially important in nontraumatic cases, in which differentiation between nerve paralysis and tendon rupture is important. Testing for a natural tenodesis effect helps establish the cause (see below). For finger paralysis, the wrist is extended and flexed. Tenodesis movement of the fingers implies a neurologic problem, while loss of tenodesis movement implies tendon rupture.

Natural tenodesis is demonstrated by flexing and e Natural tenodesis is demonstrated by flexing and extending the wrist with the hand relaxed. The effect shows extension of the fingers when the wrist is flexed and flexion of the fingers when the wrist is extended. If the tendons are not intact, this effect is lost.

Investigations

Assessing the degree of nerve injury and the chance of recovery is important for adequate early treatment. An electrodiagnostic evaluation of peripheral nerve injury is used for this purpose.

Nerve conduction studies, both sensory and motor, are useful early after an injury to distinguish neurapraxia from axonotmesis or neurotmesis. The hallmark of a neurapraxic injury is a slowing or complete block of nerve conduction along a segment of nerve. The absence of a nerve conduction response in a distal nerve segment indicates a loss of axons (axonotmesis or neurotmesis). Serial nerve conduction studies show a progressive diminution in the amplitude of the response after 48-72 hours as wallerian degeneration of the axons occurs.

Two to 3 weeks after an axonotmetic or neurotmetic injury, the results of electromyography (EMG) become abnormal. Spontaneous activity, including fibrillations, fasciculations, and positive sharp waves, develops in the affected muscles. The results of EMG performed after a neurapraxic injury usually remain normal and can help distinguish a neurapraxic injury from the more severe axonotmetic and neurotmetic injury. EMG can help detect regeneration only at the stage during which nerve fibers begin to reinnervate their target muscles. In clinical practice, serial EMG at 6- to 12-week intervals helps identify recovering muscle. If evidence of reinnervation is not present at 3 months, especially in muscles close to the level of injury, spontaneous recovery is unlikely.

Clinically, nerve regeneration can be assessed by an advancing Tinel sign. Evidence of muscle reinnervation revealed by EMG may occur several weeks before clinically apparent voluntary muscle contraction is revealed by physical examination. Over time, muscle regeneration and function is classified into the following grades of muscle strength:

  • Grade 5 - Normal motor power
  • Grade 4++ - Able to overcome gravity and significant resistance, but strength not quite normal
  • Grade 4+ - Able to overcome gravity and moderate resistance
  • Grade 4 - Able to overcome gravity and mild resistance
  • Grade 3 - Able to overcome gravity but not resistance
  • Grade 2 - Movement in the plane of the support extremity, unable to overcome gravity
  • Grade 1 - Flicker movements only
  • Grade 0 - Total paralysis
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Indications

When considering tendon transfers, the primary indication for surgery is the need to replace or reconstruct an absent function. To reconstruct a function, certain other requirements must be met. Joints that are required to move must be supple. A transferred tendon trying to move a stiff joint is doomed to failure. If joints are not sufficiently supple, they must be loosened, preferably by hand therapy.

If hand therapy fails, surgical release of the joints may be required prior to tendon transfer. Use passive motion exercises to maintain joint flexibility after surgical release. Allow sufficient time to allow all surgically induced tissue trauma adequately heal. The author usually waits at least 3 months, but preferably 6 months, before proceeding with transfers.

If sensation in the hand is absent, strongly consider restoring at least protective sensation prior to or at the time of tendon transfer. Even with normal motor function, an anesthetic hand is difficult to use; in a hand with transferred tendons, it may be impossible.

To restore functional motion to a hand or forearm, a suitable donor must be available. Generally, a suitable donor is a normally innervated muscle that is providing a redundant function. Redundancy is not absolutely necessary provided that the function to be sacrificed is not of vital importance to the overall function of the extremity. Except in unusual circumstances, a reinnervated muscle is considered a poor choice for a donor.

The following are functions in the upper extremity and the tendons commonly used for reconstruction:

  • Intrinsic balance
    • Flexor digitorum superficialis (FDS) for dynamic Zancolli lasso procedure (dynamic)[5]
    • Palmar plate for Zancolli capsulorrhaphies procedure (static)
  • Thumb opposition
    • Extensor indicis proprius
    • Flexor digitorum superficialis
    • Abductor digiti minimi
  • Thumb flexion
    • Pronator teres
    • Brachioradialis
    • Flexor digitorum superficialis
  • Thumb extension
    • Brachioradialis
    • Extensor indicis proprius
    • Palmaris longus
  • Finger flexion
    • Brachioradialis
    • Extensor carpi radialis longus
    • Adjacent profundus
  • Finger extension
    • Brachioradialis
    • Flexor carpi ulnaris
    • Flexor carpi radialis
    • Adjacent finger extensor
    • Extensor indicis proprius
  • Wrist extension
    • Brachioradialis
    • Pronator teres
  • Wrist flexion - Rarely reconstructed
  • Elbow extension
    • Posterior deltoid
    • Biceps
  • Elbow flexion
    • Pectoralis major
    • Triceps
    • Latissimus
    • Forearm flexor mass (Steindler)

The following are donor muscles and common recipients:

  • Brachioradialis
    • Extensor carpi radialis brevis
    • Flexor digitorum profundus
    • Flexor pollicis longus[8]
    • Extensor digitorum communis
    • Extensor pollicis longus
  • Extensor carpi radialis longus - Flexor digitorum profundus
  • Pronator teres
    • Extensor carpi radialis brevis
    • Extensor pollicis longus
  • Flexor carpi ulnaris - Extensor digitorum communis
  • Flexor carpi radialis
    • Extensor digitorum communis
    • Extensor pollicis longus
  • Extensor indicis proprius
    • Extensor pollicis longus
    • Opponens pollicis
  • Palmaris longus - Extensor pollicis longus
  • Flexor digitorum superficialis
    • Opponens/abductor pollicis[9]
    • Flexor digitorum profundus
    • A-1 pulley tenodesis
  • Abductor digiti minimi - Opponens pollicis
  • Biceps
    • Reroute/reinsert
    • Triceps
  • Triceps - Biceps
  • Posterior deltoid - Triceps
  • Pectoralis major - Biceps
  • Latissimus - Biceps

Timing

The timing of a tendon transfer after an injury depends on the likelihood of spontaneous reinnervation and nerve recovery. If nerve repairs or nerve transfers were performed initially, then sufficient time should be allowed to determine the outcome of the initial treatment before considering tendon transfers.[10] Keep in mind that axons regenerate at a rate of approximately 1 mm/d.

If one cannot determine from the initial injury whether the nerve was interrupted (neurotmesis) and if the clinical examination reveals a loss of motor or sensory function, determining if adequate recovery is likely is mandatory before considering tendon transfer as a reconstructive option. EMG performed immediately and then again at 6 weeks helps to determine which functions may be expected to recover. Lack of evidence of innervation at 6 weeks should prompt exploration and repair if possible. Once sufficient time has elapsed to allow for spontaneous or repaired recovery, consider reconstruction for missing functions.

Of note, some hand surgeons advocate early tendon transfers, particularly in patients with radial nerve palsies, even if recovery is still possible. In 1974, Burkhalter reported that the indications are (1) the transfer can act as a substitute during regrowth of the nerve, which will thereby reduce the time of external splinting and improve early function; (2) the transfer can act as a helper and add power to normal reinnervated muscle function; and (3) the transfer can act as a substitute when, statistically, the recovery after neurorrhaphy or nerve repair is poor.[1]

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Relevant Anatomy

Select donor muscles that provide a synergistic action to the function to be restored. Wrist extensors and finger flexors are an example of a synergistic group. In normal activity, wrist extensors contract when finger flexion is initiated. This action stabilizes the wrist, maximizing the effect of the finger flexors. This makes wrist extensors good choices for transfer to provide finger flexion. The wrist extensor normally contracts simultaneously with finger flexors; this makes postoperative motor reeducation simpler.

Other synergistic muscle groups include (1) wrist flexors and thumb/finger extensors and (2) the extensor indicis proprius (EIP) and extensor pollicis longus (EPL).

On the contrary, muscles that normally relax while another is active are more difficult for a patient to learn to control. These are considered nonsynergistic, or out of phase. An example would be the use of a wrist flexor to provide finger flexion or a wrist extensor to provide finger extension.

Muscles that have no direct functional relationship to a particular function may provide excellent donors. This is true of the BR, which is often chosen to replace finger or thumb flexion, wrist extension, or finger or thumb extension. The strength, excursion, and usual redundancy of the brachioradialis (BR) make it a frequent choice as a donor for multiple functions. The pronator teres (PT) is a good replacement for wrist extension.

In addition to considering appropriate donors, pay attention to matching, as closely as possible, a donor's excursion and work capacity with the function to be replaced. Work capacity generally corresponds to the cross-sectional area of the muscle, while excursion is related to muscle fiber length.

Transferring a muscle-tendon unit that does not need to be extended by a graft is desirable, but not absolutely necessary. In cases in which an appropriate donor cannot reach the desired recipient, an interposed tendon graft is acceptable.

Donors should be used to provide only one function and, when possible, should cross only one joint. Transfers that cross 2 joints and are expected to produce motion in both add a level of demand to the restoration of function that may not be achievable. If traversing more than one joint is necessary, appropriate stabilization of one of the joints is desirable to maximize function. For instance, triceps function is desirable when using the BR transfer in which stabilizing the elbow in extension improves the transfer function. Similarly, expecting a transferred muscle-tendon unit to provide more than one function produces disappointing results.

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Contraindications

The only absolute contraindication to tendon transfer is a lack of appropriate donors. The availability of muscle-tendon units with less than grade 5 strength is a relative contraindication. Similarly, if only muscles that have been denervated and then reinnervated are available, this is also a relative contraindication. Transfers planned in individuals with progressive neuromuscular diseases should be carefully considered before proceeding because the underlying disease process may affect the transferred unit. Lastly, satisfactory results are difficult to achieve in transfers performed to produce motion in less-than-supple joints.

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Contributor Information and Disclosures
Author

Steffen Baumeister, MD Consulting Staff, Department of Plastic Surgery, Breast Center, Behandlungszentrum Vogtareuth, Bavaria, Germany

Disclosure: Nothing to disclose.

Specialty Editor Board

Francisco Talavera, PharmD, PhD Adjunct Assistant Professor, University of Nebraska Medical Center College of Pharmacy; Editor-in-Chief, Medscape Drug Reference

Disclosure: Received salary from Medscape for employment. for: Medscape.

Jorge I de la Torre, MD, FACS Professor of Surgery and Physical Medicine and Rehabilitation, Chief, Division of Plastic Surgery, Residency Program Director, University of Alabama at Birmingham School of Medicine; Director, Center for Advanced Surgical Aesthetics

Jorge I de la Torre, MD, FACS is a member of the following medical societies: American Burn Association, American College of Surgeons, American Medical Association, American Society for Laser Medicine and Surgery, American Society of Maxillofacial Surgeons, American Society of Plastic Surgeons, American Society for Reconstructive Microsurgery, Association for Academic Surgery, Medical Association of the State of Alabama

Disclosure: Nothing to disclose.

Chief Editor

Joseph A Molnar, MD, PhD, FACS Medical Director, Wound Care Center, Associate Director of Burn Unit, Professor, Department of Plastic and Reconstructive Surgery and Regenerative Medicine, Wake Forest University School of Medicine

Joseph A Molnar, MD, PhD, FACS is a member of the following medical societies: American Medical Association, American Society for Parenteral and Enteral Nutrition, American Society of Plastic Surgeons, North Carolina Medical Society, Undersea and Hyperbaric Medical Society, Peripheral Nerve Society, Wound Healing Society, American Burn Association, American College of Surgeons

Disclosure: Received grant/research funds from Clinical Cell Culture for co-investigator; Received honoraria from Integra Life Sciences for speaking and teaching; Received honoraria from Healogics for board membership; Received honoraria from Anika Therapeutics for consulting; Received honoraria from Food Matters for consulting.

Additional Contributors

Anthony E Sudekum, MD Consulting Staff, Department of Plastic Surgery, St John's Mercy Health Center of St Louis

Anthony E Sudekum, MD is a member of the following medical societies: American College of Surgeons, American Society for Surgery of the Hand, Missouri State Medical Association

Disclosure: Nothing to disclose.

Acknowledgements

The authors and editors of eMedicine gratefully acknowledge the contributions of previous author Philip E Higgs, MD, to the development and writing of this article.

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  45. Van Heest A, Hanson D, Lee J, et al. Split flexor pollicus longus tendon transfer for stabilization of the thumb interphalangeal joint: a cadaveric and clinical study. J Hand Surg [Am]. 1999 Nov. 24(6):1303-10. [Medline].

  46. Williams HB. The value of continuous electrical muscle stimulation using a completely implantable system in the preservation of muscle function following motor nerve injury and repair: an experimental study. Microsurgery. 1996. 17(11):589-96. [Medline].

 
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Assist devices used in upper limb paralysis.
Natural tenodesis is demonstrated by flexing and extending the wrist with the hand relaxed. The effect shows extension of the fingers when the wrist is flexed and flexion of the fingers when the wrist is extended. If the tendons are not intact, this effect is lost.
Tendons ruptured secondary to rheumatoid arthritis. Repair by transfer of long extensor digitorum communis (EDC) to the ring EDC and the index EDC to the little EDC. The fourth dorsal compartment has been opened to allow inspection of the compartment and repair of any problem causing the ruptures.
Ulnar clawing produced by loss of intrinsics to the little and ring fingers, characterized by hyperextension of the metacarpophalangeal joints and flexion of the interphalangeal joints.
Zancolli-type lasso of A-1 pulley by the superficialis.
Extensor indicis proprius transfer to the extensor pollicis longus.
Side-by-side adjustments of the profundus or extensor tendons for extrinsic balance.
Split flexor pollicis longus transfer for stabilization of the interphalangeal joint.
The neuromuscular stimulator is useful for intraoperative evaluation of tendon excursion and transfer function.
Pulvertaft weave used to connect tendon grafts.
Test excursion and transfer function using a neuromuscular stimulator.
Opponensplasty using the extensor indicis proprius for treatment of low median nerve palsy.
Flexor reconstruction in brachial plexus injury using a brachioradialis to flexor digitorum profundus transfer and a pronator teres to flexor pollicis longus transfer along with extensor tenodesis for release.
Flexor reconstruction in a tetraplegic patient using a extensor carpi radialis longus to flexor digitorum profundus transfer and a pronator teres to flexor pollicis longus transfer along with a split flexor pollicis longus transfer to stabilize the interphalangeal joint.
Table 1. Recommended Transfers for a High Median Nerve Palsy
Donor Recipient
Brachioradialis Flexor pollicis longus
Extensor carpi radialis longus Flexor digitorum profundus
EIP opponensplasty
Table 2. Tendon Transfers for an Anterior Interosseous Nerve Palsy
Donor Recipient
Brachioradialis Flexor pollicis longus
Extensor carpi radialis longus Flexor digitorum profundus
Table 3. Tendon Transfers for a High Ulnar Nerve Palsy
Donor Recipient
Brachioradialis Flexor digitorum profundus
Flexor digitorum superficialis Adductor pollicis
Flexor digitorum superficialis lasso ring and little
Table 4. Tendon Transfers for a High Radial Nerve Palsy
Donor Recipient
Pronator teres Extensor carpi radialis brevis
Flexor carpi ulnaris Extensor digitorum communis
Palmaris longus Extensor pollicis longus (rerouted)
Table 5. Tendon Transfers for a Low Radial Nerve Palsy or Posterior Interosseous Nerve Palsy
Donor Recipient
Brachioradialis Extensor pollicis longus
Flexor carpi ulnaris Extensor digitorum communis
Table 6. Muscles Available for Transfer
Name: Date:
Function Needed Active Muscles Available
Elbow flexion     Brachialis
      Biceps
      Brachioradialis
Elbow extension     Triceps
Forearm pronation     Pronator teres
      Pronator quadratus
Forearm supination     Supinator
Wrist flexion     Flexor carpi radialis
      Flexor carpi ulnaris
      Palmaris longus
Wrist extension     Extensor carpi radialis longus
      Extensor carpi radialis brevis
      Extensor carpi ulnaris
Finger flexion     Flexor digitorum profundus
      Flexor digitorum superficialis
Finger extension     Extensor digitorum communis
      Extensor indicis proprius
      Abductor digiti minimi
Thumb flexion     Flexor pollicis longus
Thumb extension     Extensor pollicis longus
Thumb opposition     Abductor pollicis brevis
Thumb adduction     Abductor pollicis
Name and other procedures:
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