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The Journal of Bone & Joint Surgery British Volume
Vol. 93-B, Issue 11 | Pages 1568 - 1570
1 Nov 2011
Labbé J Peres O Leclair O Goulon R Scemama P Jourdel F Duparc B

We describe a symptomatic, progressive restriction of knee flexion due to an accessory quadriceps femoris in a nine-year-old girl. There was no history or findings of post-injection fibrosis, nor any obvious swelling of the affected quadriceps. At arthroscopy no intra-articular pathology was found. An accessory ‘quinticeps femoris’ was diagnosed by ultrasonography and MRI. Following excision of the muscle and tendon full flexion of the knee was regained and there was no recurrence of the contracture.