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Journal of Bone and Joint Surgery - British Volume, Vol 87-B, Issue 8,
1096-1101.
doi: 10.1302/0301-620X.87B8.14605 Copyright © 2005 by British Editorial Society of Bone and Joint Surgery Function of subscapularis after surgical treatment for recurrent instability of the shoulder using a bone-block procedureC. Maynou, MD, Professor of Orthopaedic Surgery1; X. Cassagnaud, MD, Orthopaedic Surgeon1; and H. Mestdagh, MD, Professor of Anatomy11 Department of Orthopaedic Surgery, University Hospital of Lille, 2 Avenue Oscar Lambret, 59000 Lille, France. Correspondence should be sent to Professor C. Maynou; e-mail: c-maynou{at}chru-lille.fr
We compared the long-term function of subscapularis after the Latarjet procedure using two surgical approaches. We treated 102 patients (106 shoulders) with a mean age of 26.8 years (15 to 51) with involuntary unidirectional recurrent instability. The operation was carried out through an L-shaped incision with trans-section of the upper two-thirds of the muscle in 69 cases and with a subscapularis split in 37. All clinical results were assessed by the Rowe and the Duplay scores and the function of subscapularis by evaluating the distance and strength at the lift-off position. Bilateral CT was performed in 77 patients for assessment of fatty degeneration. The mean follow-up was 7.5 years (2 to 15) and 18% of cases were lost to follow-up. The mean Duplay score was 82 of 100 for the L-shaped incision group and 90 of 100 for those with a subscapularis split (p = 0.02). The mean fatty degeneration score was 1.18 after an L-shaped incision compared with 0.12 after subscapularis split (p = 0.001). The subscapularis split approach is therefore recommended.
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