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Related Experiment Videos

Posterior interosseous nerve palsies.

G Cravens1, D G Kline

  • 1Department of Neurosurgery, Louisiana State University Medical Center, New Orleans.

Neurosurgery
|September 1, 1990
PubMed
Summary
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Surgical repair of the posterior interosseous nerve, often affected by entrapment, leads to significant functional recovery in patients with radial nerve disorders. Most patients achieved good to excellent nerve function after treatment.

Area of Science:

  • Orthopedic Surgery
  • Neurology
  • Microsurgery

Background:

  • Radial nerve disorders can significantly impair upper extremity function.
  • The posterior interosseous nerve, a branch of the radial nerve, is susceptible to various injuries and compressions.
  • Understanding the outcomes of surgical interventions for posterior interosseous nerve lesions is crucial for patient management.

Purpose of the Study:

  • To review the clinical outcomes of patients with posterior interosseous nerve involvement.
  • To analyze the causes and surgical results for isolated posterior interosseous nerve lesions.
  • To evaluate the effectiveness of different surgical techniques based on nerve condition at exploration.

Main Methods:

  • Retrospective review of 170 patients with radial nerve disorders over 15 years.

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  • Focus on 32 patients with exclusive posterior interosseous nerve involvement.
  • Preoperative assessment included physical examination, electrophysiological tests (electromyogram/nerve conduction velocity), and imaging; 26 patients underwent surgery.

    • Main Results:

    • Common causes included entrapment (arcade of Froshe), laceration, fracture, compression/contusion, and tumors.
    • All 28 surgically treated nerves achieved a functional grade of 3 or higher (out of 5) after 4 years.
    • 17 nerves reached Grade 4/5 and 7 achieved Grade 5/5; nerves in continuity with lesions showed better outcomes with appropriate treatment (neurolysis, graft, or suture).

    Conclusions:

    • Surgical intervention for posterior interosseous nerve lesions yields favorable functional recovery.
    • Nerves in continuity, particularly those with entrapment, benefit from timely surgical decompression and/or repair.
    • Early and accurate diagnosis combined with appropriate surgical management is key to restoring function in posterior interosseous nerve injuries.