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Performing an isolated release of the popliteus tendon during a total knee arthroplasty is most appropriate in which of the following scenarios?
Valgus deformity that is tight in extension
Varus deformity that is tight in extension
Valgus deformity that is tight in flexion
Valgus deformity that is tight in both flexion and extension
Varus deformity that is tight in flexion
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A 65-year-old woman with painful knee arthritis and the deformity seen in Figure A, is scheduled to undergo a total knee arthroplasty. All the following are risk factors for a post-operative peroneal palsy EXCEPT:
Pre-operative flexion contracture >10 degrees
History of lumbar laminectomy
Valgus deformity of >12 degrees