{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,29]],"date-time":"2026-07-29T01:59:48Z","timestamp":1785290388299,"version":"3.55.0"},"reference-count":32,"publisher":"British Editorial Society of Bone & Joint Surgery","issue":"6","license":[{"start":{"date-parts":[[2007,6,1]],"date-time":"2007-06-01T00:00:00Z","timestamp":1180656000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/online.boneandjoint.org.uk\/TDM"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["The Journal of Bone and Joint Surgery. British volume"],"published-print":{"date-parts":[[2007,6]]},"abstract":"<jats:p> We studied the medium-term outcome of the Bernese periacetabular osteotomy in 52 patients (58 hips) with symptomatic developmental dysplasia of the hip and a mean age of 37.6 years (13 to 48). <\/jats:p><jats:p> The operations were performed between 1993 and 2005 by the senior author with a mean follow-up of 66.7 months (13 to 153). There were 42 women (47 hips) and ten men (11 hips). Of these patients, 24 (30 hips) had an osteotomy on the right side and 22 (28 hips) on the left. Six patients had bilateral operations. The clinical outcome was assessed using the modified Merle d\u2019Aubigne scale, and pre- and post-operative radiological evaluation using the modified Tonnis osteoarthritis score, the centre-edge angle, the acetabular index, the status of Shenton\u2019s line, and the cross-over sign. <\/jats:p><jats:p> The mean centre-edge angle and the acetabular index were 14\u00b0 (2\u00b0 to 34\u00b0) and 23.6\u00b0 (0\u00b0 to 40\u00b0) before operation, and 36.6\u00b0 (16\u00b0 to 72\u00b0) and 7.9\u00b0 (0\u00b0 to 28\u00b0) after, respectively (p &lt; 0.001, analysis of variance (ANOVA)). Shenton\u2019s line was intact in 23 hips (39.6%) before operation and in 48 hips (82.8%) after. The cross-over sign was present in 31 hips (53.4%) before and in three hips (5.2%) after operation (p &lt; 0.001, ANOVA). The total Merle d\u2019Aubigne clinical score improved from a mean of 12.6 (9 to 15) to 16.0 (12 to 18) points (p &lt; 0.001, ANOVA). Only four hips required subsequent total hip replacement. <\/jats:p><jats:p> Our results indicate that the Bernese periacetabular osteotomy provides good symptomatic relief for patients with little to no arthritis (Tonnis type 0 or 1) with an underlying deformity that can be corrected to a position of a stable, congruent hip joint. <\/jats:p>","DOI":"10.1302\/0301-620x.89b6.18805","type":"journal-article","created":{"date-parts":[[2007,7,5]],"date-time":"2007-07-05T04:05:54Z","timestamp":1183608354000},"page":"721-724","source":"Crossref","is-referenced-by-count":65,"title":["Medium-term results of the Bernese periacetabular osteotomy in the treatment of symptomatic developmental dysplasia of the hip"],"prefix":"10.1302","volume":"89-B","author":[{"given":"D. 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