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Aberrant retractor placement
1%
23/4024
Postoperative epidural analgesia
9%
348/4024
Correction of a 20 degree preoperative valgus deformity
3%
108/4024
Excessive medial release
84%
3381/4024
Preoperative diagnosis of neuropathy
4%
145/4024
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Peroneal nerve palsy following a total knee arthroplasty has been shown to be associated with postoperative epidural analgesia, correction of large valgus deformities, and preoperative diagnosis of neuropathy in the involved extremity (either centrally or peripherally). One may also sustain peroneal nerve palsies following aberrant retractor placement intraoperatively. Idusuyi et al performed a retrospective review and found a significant increase in the relative risk of developing a peroneal nerve palsy following total knee arthroplasty in patients who received postoperative epidural analgesia, had prior lumbar laminectomies, and had preoperative valgus deformities of greater than 12 degrees. The review by Nercessian et al discusses the above risk factors, treatments and prognosis of a peroneal nerve palsy following total knee arthroplasty. Most studies in this review demonstrated approximately 50% complete recovery with a higher likelihood of complete recovery associated with a less severe initial injury. The time to recovery ranged from 18 months to 5 years, and while nerve exploration was seen to help in a small group of patients, this treatment modality remains controversial.
3.5
(26)
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