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Digital Nerve Injury: Assessment and Treatment.

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The Journal of the American Academy of Orthopaedic Surgeons
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Early recognition and treatment of digital nerve injuries are crucial for preventing sensory deficits and pain. Surgical options include direct repair, nerve autografts, processed nerve allografts, or conduits, depending on injury type and gap length.

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Area of Science:

  • Orthopedics
  • Neurosurgery
  • Regenerative Medicine

Background:

  • Digital nerve injuries can lead to persistent sensory deficits and chronic pain if not adequately treated.
  • Prompt diagnosis and intervention are essential for optimizing functional recovery in patients with hand and finger injuries.
  • Open wounds of the digits warrant a high index of suspicion for underlying nerve damage.

Purpose of the Study:

  • To review the optimal management strategies for acute and delayed digital nerve injuries.
  • To compare the efficacy of different nerve repair techniques, including conduits, nerve autografts, and processed nerve allografts.
  • To emphasize the importance of early recognition and treatment in improving patient outcomes.

Main Methods:

  • Review of current literature on digital nerve repair techniques.
  • Analysis of outcomes based on injury type (laceration vs. avulsion) and repair method.
  • Evaluation of graft and conduit suitability for varying nerve gap lengths.

Main Results:

  • Acute, sharp digital nerve lacerations may be treated with direct repair.
  • Avulsion injuries or delayed repairs necessitate nerve resection and reconstruction using autografts, allografts, or conduits.
  • Conduits are effective for nerve gaps <15 mm; processed nerve allografts show reliable outcomes for longer gaps.

Conclusions:

  • Timely and appropriate management of digital nerve injuries significantly improves sensory function and reduces pain.
  • The choice of reconstruction method should be tailored to the specific characteristics of the nerve injury, particularly the gap distance.
  • Processed nerve allografts offer a viable option for bridging longer nerve defects, expanding reconstructive possibilities.