title: [Clinical feathers and treatment of peroneal nerve entrapment neuropathy].
abstract: OBJECTIVE
  Peroneal nerve entrapment neuropathy (PEN) is generally known as a drop foot with sensory disturbance. However, some patients experience numbness and pain in the affected area without severe paresis due to PEN. We report the clinical features and our surgical results of PEN cases.
  
  
  METHODS
  We encountered 17 cases of PEN. The patients were 7 females and 10 males and their ages ranged from 30 to 78 years(average 56.1 years). In these cases, conservative therapy was unsuccessful;therefore, we performed surgical treatment for PEN.
  
  
  RESULTS
  Among the 17 cases, 4 were of bilateral and 13 were of unilateral PEN. There was no severe paresis, as in drop foot;however, mild paresis (4/5, manual muscle test, MMT) was noted in 15 cases. In all cases, intermittent claudication presented, which ranged from 10 to 800 m (average 150 m). In 13 cases, radiological abnormality of the lumbar region was noted and 8 cases had a history of lumbar surgery (they had failed back surgery syndrome). In all the cases, we performed neurolysis of the peroneal nerve under local anesthesia;there was no surgical complication. After the surgery, symptoms improved, and the numerical rating of the lower limb improved from 8.6/10 to 0.8/10. Intermittent claudication also improved in all of the cases.
  
  
  CONCLUSIONS
  We successfully treated 17 cases of PEN, which had lower limb pain without severe paresis, as in drop foot. Our results indicate that PEN should be recognized as a cause of intermittent claudication. Neurolysis for PEN under local anesthesia is less invasive and is useful for the treatment of lower limb pain.
authors.affiliation: Department of Neurosurgery, Kushiro Rosai Hospital.
authors.forename: Naotaka
authors.initials: N
authors.lastname: Iwamoto
authors.forename: Toyohiko
authors.initials: T
authors.lastname: Isu
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Chiba
authors.forename: Kyongsong
authors.initials: K
authors.lastname: Kim
authors.forename: Daijiro
authors.initials: D
authors.lastname: Morimoto
authors.forename: Kazuyoshi
authors.initials: K
authors.lastname: Yamazaki
authors.forename: Masanori
authors.initials: M
authors.lastname: Isobe
mesh_terms: D000328:Adult; D000368:Aged; D000818:Animals; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D019635:Neurosurgical Procedures / Q000009:adverse effects / Q000379:methods*; D020427:Peroneal Neuropathies / Q000503:physiopathology / Q000601:surgery*; D011183:Postoperative Complications; D016896:Treatment Outcome