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Microvascular Decompression: Salient Surgical Principles and Technical Nuances
Published on: July 5, 2011
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Microsurgical Decompression for Peroneal Nerve Entrapment Neuropathy
Daijiro Morimoto1, Toyohiko Isu, Kyongsong Kim
1Department of Neurosurgery, Nippon Medical School.
Neurologia Medico-Chirurgica
|August 1, 2015
Summary
Peroneal nerve entrapment neuropathy (PNEN) can cause leg pain and weakness. A less invasive surgery under local anesthesia effectively treated PNEN, with high patient satisfaction and symptom relief.
Area of Science:
- Neurology
- Orthopedic Surgery
Background:
- Peroneal nerve entrapment neuropathy (PNEN) presents with lateral lower thigh/instep pain, numbness, and foot/ankle motor weakness.
- Conservative treatments often fail, necessitating surgical intervention.
- PNEN can be a cause of persistent symptoms after lumbar spinal surgery (LSS).
Purpose of the Study:
- To evaluate the preliminary outcomes of a less invasive microsurgical decompression for PNEN under local anesthesia.
- To assess the efficacy of this procedure in patients with and without prior LSS.
Main Methods:
- A cohort of 22 patients (33 legs) with PNEN, unresponsive to conservative care, underwent microsurgical decompression.
- The procedure was performed under local anesthesia.
- Patients were followed for an average of 40 months post-surgery.
Main Results:
- All 22 patients reported satisfaction with the surgical outcomes.
- Preoperative motor weakness (MMT 4/5) in 8 patients was resolved post-procedure.
- Of 19 patients with prior LSS, 9 had residual PNEN symptoms, and 10 experienced symptom relief, though some later developed new PNEN symptoms.
Conclusions:
- Microsurgical decompression under local anesthesia is a viable and effective treatment for PNEN.
- PNEN should be considered in L5 neuropathy differential diagnoses and as a cause of post-LSS symptoms.
- This less-invasive approach offers significant benefits for patients suffering from PNEN.
