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Orthopaedic Proceedings
Vol. 86-B, Issue SUPP_III | Pages 374 - 374
1 Mar 2004
Mamisch T Kordelle J Richolt J Seibel R Forst R Kikinis R
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Aim: Can comparable results be obtained regarding the postoperative improvement of range of motion using ßexionosteotomy alone in comparison to the three-dimensional corrective osteotomy. Material and Methods: 16 patients after SCFE were analyzed (7 female, 9 male). A computer program for simulation of movement and osteotomy developed by the authors, served for study execution. According to 3D-reconstruction of the computer tomography data the physiological range was determined by ßexion, abduction and internal rotation. The three-dimensional osteotomy was compared with the onedimensional ßexionosteotomy. Both inter-trochanteric osteotomy techniques were simulated and the improvements of the movement range were assessed and compared. Results: The average slipping and thus correction angles measured inferior 25.5¡ (range: 7.5¡–51.0¡) and posterior 52.0¡ (range: 29.0¡– 78.5¡). After the simulation of osteotomy by Southwick the angle of ßexion was 61.3¡ (improvement: 41.4¡), of abduction 60.3¡ (improvement: 42.9¡) and interior rotation of 70.1¡ (improvement: 52.6¡). The ßexionsosteotomy after Grifþth achieved a ßexion of 66.7¡ (improvement: 46.8¡), an abduction of 41.1¡ (improvement: 23.7¡) and an internal rotation of 57.4¡ (improvement: 40.0¡). Conclusion: The improvement of the free movement range after ßexion osteotomy is comparable, with three-dimensional osteotomy after Southwick with the exception of the abduction angle.