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Sciatic nerve entrapment in the upper thigh caused by an injury sustained during World War II at the battle of Anzio. Case report.

The authors present an unusual case of sciatic nerve entrapment due to a World War II shrapnel injury to the left thigh suffered during the battle of Anzio in 1943. The patient presented for evaluation of left lower-extremity pain in the sciatic nerve distribution. Magnetic resonance imaging of the lumbosacral spine revealed a disc bulge at L5-S1 that would not explain severe sciatica. A positive Tinel sign was present in the posterior aspect of the upper thigh at the site of a scar resulting from a World War II shrapnel injury. The patient underwent exploratory external neurolysis of the area, and the sciatic nerve was released from fibrous adhesive entrapment. The patient improved dramatically following surgery. During a 3-year follow-up period, no recurrence of symptoms was noted.