title: Kotz and Ganz osteotomies in the treatment of adult acetabular dysplasia.
abstract: In hips with acetabular dysplasia, we performed Kotz osteotomy (group 1) in 22 hips (20 patients; mean age 24.3 years) and Ganz osteotomy (group 2) in 23 hips (22 patients; mean age 23.1 years). Group 1 was followed 83.3 (56-112) months and group 2 40.9 (24-66) months. In group 1, Harris hip score improved from average 74.9 to 86.9, mean center edge (CE) angle from -4.5 degrees to 30.3 degrees, and mean vertical center edge (VCE) angle from 5.3 degrees to 36.2 degrees. In group 2, Harris hip score improved from average 76.6 to 91.1, mean CE angle from -5.9 degrees to 32.0 degrees, and mean VCE angle from 5.0 degrees to 41.3 degrees. Using Pauwels criteria, regression was observed in 12 hips in group 1 and one progressed. In group 2, 15 hips showed regression and three progressed. In patients treated with Ganz osteotomy, the complication rate was higher and the complications more serious than in patients treated with Kotz osteotomy. Most complications were, however, seen among the first ten patients treated with Ganz osteotomy. Although we detected no significant difference between the two groups in terms of clinical and radiological findings, we believe the outcome to be slightly better after a properly performed Ganz osteotomy.
authors.affiliation: Medical School, Department of Orthopaedics and Traumatology, University of Gaziosmanpasa, 60100 Tokat, Turkey. senc64@yahoo.com
authors.forename: Cengiz
authors.initials: C
authors.lastname: Sen
authors.forename: Mehmet
authors.initials: M
authors.lastname: Asik
authors.forename: I Remzi
authors.initials: IR
authors.lastname: Tozun
authors.forename: Nadir
authors.initials: N
authors.lastname: Sener
authors.forename: Murat
authors.initials: M
authors.lastname: Cinar
mesh_terms: D000077:Acetabulum / Q000601:surgery*; D000293:Adolescent; D000328:Adult; D006618:Hip Dislocation, Congenital / Q000150:complications / Q000601:surgery*; D006801:Humans; D016916:Joint Deformities, Acquired / Q000150:complications / Q000601:surgery*; D015207:Osteoarthritis, Hip / Q000209:etiology / Q000601:surgery*; D010027:Osteotomy / Q000379:methods*