髋臼旋转截骨术治疗髋臼发育不良

目的探讨髋臼旋转截骨术治疗髋臼发育不良的疗效。方法应用髋臼旋转截骨术治疗髋臼发育不良16例（18髋）,截骨线距臼周缘2 cm,做穹隆状截骨,凿断后再用弧度骨凿将髋臼向前外下方旋转。髋臼矫正到较正常位置后,截骨间隙呈楔形状,用类似间隙大小的楔形同种异体骨块嵌入,并用可注射状人工骨填满间隙,最后用2枚可吸收螺钉固定。测定并比较术前和术后JOA评分、CE角和Sharp角。结果16例均获随访,时间442个月。术后摄片髋关节复位位置好,股骨头及髋臼形状基本正常。髋臼旋转截骨及植入骨块2个月后骨性愈合,6个月后髋关节功能恢复正常17髋,较差1髋,无患髋的骨性关节炎病变继续恶化。JOA评分：术前为75.2分±3.1分,术后为93.5分±3.5分;CE角：术前为15.8°±1.3°,术后为33.4°±1.7°;Sharp角：术前为47.3°±2.5°,术后为29.8°±2.1°。JOA评分术后增加18.3分;CE角增加17.6°,Sharp角减少17.5°,差异有统计学意义（P〈0.05）。结论髋臼旋转截骨术可矫正头臼间异常的匹配关系,使疼痛得到缓解,并使骨性关节炎的过程得到有效遏制,是治疗髋臼发育不良合并早、中期骨性关节炎的理想术式。     

综合保髋手术治疗髋关节发育不良晚期病变远期疗效评价

目的:探讨Chiari截骨、血管束植入为基础的综合手术治疗髋关节发育不良晚期病变的远期疗效。方法:42例(61髋)髋关节发育不良晚期病变患者接受以Chiari截骨、血管束植入为基础术式的综合手术治疗。本组年龄27~42岁,平均36.1岁。61髋中行单纯Chiari骨盆截骨、股骨头内血管束植入术39髋,配合髋臼加盖术16髋,配合股骨近端旋转截骨术2髋,配合髋臼加盖术及股骨近端旋转截骨术4髋。结果:本组平均随访时间8.4年,最后随访时,5例5髋已行人工髋关节置换,其他37例56髋Harris评分术前平均58分,术后平均83分,疗效优良43髋(76.8%)。CE角:术前平均8.7°,术后平均28.5°。股骨头覆盖指数:术前平均61.4%,术后平均83.2%。结论:该综合手术方法对髋关节发育不良晚期病变可以显著缓解临床症状,改善髋关节功能,提高患者生活质量,大大延缓人工全髋关节置换术的时间。     

伯尔尼髋臼周围截骨术对严重髋臼发育不良的治疗

目的 研究和分析使用伯尔尼髋臼周围截骨术治疗严重髋臼发育不良的中期临床和影像学结果.方法 1997年10月至2002年12月对18例(20髋)严重髋臼发育不良(Severin分级Ⅳb级)的患者接受了伯尔尼髋臼周围截骨术.患者手术时平均年龄21岁,平均随访时间6.2年.本组患者术前患髋均已出现疼痛,术前功能位片显示关节面吻合.术后影像学评价畸形的矫正范围,截骨处的愈合情况及关节炎的进展.临床结果和髋关节功能由Harris评分进行评价,术前Harris评分平均78.5分.结果 比较术前和术后X线片,外侧中心边缘角(CE角)、前方CE角和臼顶倾斜角均有显著改善.所有髂骨截骨均愈合.患者术后末次随访Harris评分平均91.1分.18例患者中的14例对手术效果表示满意.20髋中16髋临床结果优.但有5髋存在畸形矫正不足.结论 伯尔尼髋臼周围截骨术是治疗严重髋臼发育不良的有效术式.这一截骨术可以在各个平面对严重的骨缺损进行矫正,中期临床结果令人满意.     

髋臼周围截骨治疗成人髋关节发育不良

目的 探讨髋臼周围截骨治疗成人髋关节发育不良的手术适应证及疗效.方法 25例成人髋关节发育不良患者接受经改良Smith-Peterson人路的髋臼周围截骨术,女19例,男6例;年龄18～45岁,平均25.5岁.均为单侧发病,左侧14例,右侧11例.3例有既往手术史,2例Chari截骨术、1例Salter截骨术.髋关节骨关节炎T(o)nnis 0期13例、Ⅰ期9例、Ⅱ期3例.Shenton线不连续18例.髋臼外侧CE角4.57°±7.39°,前侧CE角0.95°±6.02°,髋臼顶倾斜角32.50°±5.96°,股骨头超出指数38.11%±5.70%,Harris髋关节评分(75.32±7.51)分.结果 全部患者随访2.0～7.5年,平均4.5年.3例髋关节骨关节炎T(o)nnis Ⅰ期者改善为0期,2例T(o)nnisⅡ期者改善为Ⅰ期,1例T(o)nnis Ⅰ期者进展为Ⅱ期.Shenton线不连续减少为10例.外侧CE角29.07°±5.81°,前侧CE角29.52°±4.51°,髋臼顶倾斜角19.17°±4.95°,股骨头超出指数24.20%±4.83%,Harris髋关节评分(84.88±4.88)分,与术前比较差异均有统计学意义.16例出现股外侧皮神经支配区感觉麻木,其中9例自行恢复,7例残留永久性麻木.1例出现髋关节周围Brooker Ⅰ型异位骨化.结论 经改良Smith-Peterson人路行髋臼周围截骨治疗成人髋关节发育不良可有效增加髋臼包容,改善关节功能,阻止髋臼周围硬化和囊性变,保持关节间隙,延缓骨关节炎进展.     

成人髋关节发育不良的不同手术方案

目的探讨不同手术方案治疗成人髋关节发育不良的的临床效果。方法 2004年8月至2007年5月采用不同手术方法治疗成人髋关节发育不良68例81髋,男25例30髋,女43例51髋。其中旋转截骨术28髋,髋臼造盖术6髋,Chiari骨盆内移截骨术22髋,所有保髋手术年龄为18～50岁,平均35岁。全髋关节置换25髋,年龄在50～68岁,平均60岁。所有患者术后1年使用Harris评分髋关节功能。对保髋患者术前、术后及随访时测量CE角。结果全部获得随访,随访时间为3～6年,平均4年8个月。所有患者疼痛症状得到明显改善,HARRIS评分术前与术后1年spss通过13.0方差检验,差异有统计学意义（P〈0.01）。所有保髋手术患者术前与术后1年Harris评分经过统计学分析,差异无统计学意义（P〉0.05）。CE角术前为0°±15.2°,术后末次为26°±6.5°。无一例进行翻修术,所有患者中期随访疗效满意。结论对髋关节发育不良患者选择合适的手术方式可获得满意的中期疗效。     

计算机辅助下Chiari骨盆截骨和股骨短缩旋转截骨治疗儿童髋臼发育不良并髋关节脱位的初步应用

目的评估计算机辅助设计下Chiari骨盆截骨和股骨短缩旋转截骨治疗儿童髋臼发育不良并髋关节脱位的术前评估、手术设计以及术后效果分析的可行性。方法自2007年7月～2009年4月,在12例(12髋)Chiari髋臼周围截骨和股骨短缩旋转截骨术中使用基于三维CT重建的计算机辅助技术。其中男7例(7髋),女5例(5髋);年龄3～12岁,平均6岁。术前行髋关节螺旋CT扫描并进行三维重建,使用"三维辅助截面"技术对股骨头覆盖程度进行评估。通过该程序对Chiari髋臼周围截骨和股骨短缩旋转截骨术进行模拟操作,记录模拟手术中髋臼截骨块内移的距离及股骨短缩距离与旋转角度,作为实际手术的参考。术后复查髋关节X线片,对手术效果进行分析。结果 12髋术前外侧CE角平均为13.5°(8～23°),臼顶倾斜角平均为37.7°(18～50°),股骨前倾角为87.2°(81～95°),三维辅助截面的股骨头实际覆盖率平均为9%(0%～20%)。术后平均外侧CE角为33.1°(23～49°),臼顶倾斜角为13.1°(11～21°),三维辅助截面的股骨头实际覆盖面积平均为91.4%(85%～94%),股骨前倾角为13.5°(13～25°)。结论计算机辅助技术对Chiari骨盆截骨和股骨短缩旋转截骨的术前设计具有较高的准确率和可信度,能够直观、立体地再现髋臼发育不良的畸形特点;模拟截骨操作可使术者了解合适的截骨位置和旋转角度,以指导实际的截骨手术。     

髋臼转位截骨(TAO)治疗DDH继发早期OA

目的　介绍一种治疗髋臼发育不良并早期骨性关节炎的髋臼转位截骨术并评价其结果。方法　 4 3例髋关节发育不良 (DDH)并发骨关节病 (OA) ,全部病人实施了髋臼转位截骨术。结果　术后平均 12个月 (10～ 17个月 )随访 ,术后 Harris评分 93分 (85～ 10 0分 ) ,平均增加 2 5分 ,两者比较有显著性差异 ;术后 CE角 2 0°～ 2 8°,平均 2 4°,两者比较有显著性差异 ;术后髋臼指数 37°～ 4 8°,平均 4 5°,两者比较有显著性差异 ;术后 AHI81% (75 %～ 98% ) ,两者比较有显著性差异。结论　髋臼转位截骨术是治疗髋关节发育不良 ( 型 )并发骨关节病 ( 期 )有效的方法     

改良Bernese髋臼周围截骨术治疗成人髋臼发育不良

[目的]介绍经改良的经髂腹股沟入路在骨盆内壁行Bemese髋臼周围截骨术治疗成人髋臼发育不良.[方法] 10例髋关节发育不良造成髋关节疼痛的患者行髂腹股沟入路髋臼周围截骨术,并对原截骨方法进行适当改良.患者平均年龄29岁,术前患者平均疼痛2.5年,髋关节活动度正常或基本正常,髋关节间隙正常或轻度狭窄.术前术后均测量CE角和AC角及Harris评分.[结果]术后10例经12 ～28个月(平均20个月)的随访.髋术后疼痛明显减轻,髋关节活动度保持正常.术后CE角和AC角及Harri评分明显改善,术中术后无明显并发症发生.[结论]骨盆内髋臼周围截骨术治疗成人髋臼发育不良可以获得良好疗效.     

偏心髋臼旋转截骨术的生物力学机制及初步临床疗效

 目的 探讨偏心髋臼旋转截骨术治疗髋关节发育不良的生物力学机制及其初步临床疗效。方法 取6具经福尔马林防腐处理的女性尸体骨盆标本,建立髋关节生物力学模型,在模型上模拟偏心髋臼旋转截骨术。对骨盆缓慢施加连续纵向压力0~500 N,测量术前和术后载荷100、200、300、400、500 N时的股骨头承重区应变值,计算应力值。2007年7月至2014年10月应用偏心髋臼旋转截骨术治疗髋关节发育不良25例（26髋）,男6例,女19例;年龄11~57岁,平均31岁。术后以Harris髋关节评分评价髋关节功能,摄骨盆正位X线片测量头臼指数、中心边缘角（center-edge-angle,CE角）及Sharp角。结果-随着脊柱纵向压力加大,股骨头上的应力值随之增加。偏心髋臼旋转截骨术后应力值在载荷超过300 N后由上升趋势转变为下降趋势,总体呈抛物线状。100~500 N载荷下偏心髋臼旋转截骨术后的应力值与术前差异均无统计学意义。临床随访18例（19髋）,随访率72%。随访时间7~85个月,平均40个月。Harris髋关节评分由术前（64.3±7.2）分提高至末次随访时（85.6±5.3）分;头臼指数平均增加36.5%、CE角平均增加33.1°、Sharp角平均减少12.3°,与术前比较差异均有统计学意义。结论-偏心髋臼旋转截骨术具有较好的矫正髋臼畸形的能力,可增大股骨头的髋臼覆盖面和降低承重区压力。     

改良骨盆三联截骨术治疗成人髋臼发育不良临床研究

目的 探讨改良骨盆三联截骨术治疗成人髋臼发育不良的临床疗效.方法 回顾性分析2005年7月至2011年6月期间20例(22髋)成人髋臼发育不良患者经改良骨盆三联截骨术治疗的资料.患者年龄19～49岁,平均36.18±9.80岁.采用X线片测量CE角及Sharp角,经Harris髋关节功能评分评价术后功能恢复情况.结果 所有患者均获随访1～6年,平均2.6年.术后主要症状、体征均得到明显改善.Harris髋关节功能评分由术前平均74.36±5.01分上升至术后平均89.86±5.65分(P＜0.05).CE角由术前平均4.77±4.44°改善至术后平均29.68±4.75°,平均改善24.91°(P＜0.05).Sharp角由术前平均52.91±5.83°改善至术后平均35.23±3.35°,平均改善17.68°(P＜0.05).结论 改良骨盆三联截骨术是治疗成人髋臼发育不良的有效方法.     

Rotational acetabular osteotomy for advanced osteoarthritis secondary to dysplasia of the hip

BACKGROUND: Satisfactory intermediate and long-term results of rotational acetabular osteotomy for the treatment of early osteoarthritis secondary to developmental dysplasia of the hip have been reported. The purpose of this study was to examine the results of rotational acetabular osteotomy in patients with advanced osteoarthritis secondary to developmental dysplasia of the hip. METHODS: We performed a retrospective review of the results of rotational acetabular osteotomy in forty-three patients (forty-three hips). All of the patients had radiographic evidence of advanced-stage osteoarthritis, defined as narrowing of the joint space with cystic radiolucencies and small osteophytes according to the staging system of the Japanese Orthopaedic Association. Forty-one patients were female, and two were male. The mean age was 43.8 years at the time of surgery, and the mean duration of follow-up was 8.5 years. Clinical follow-up was performed with use of the system of Merle d'Aubigné and Postel. The center-edge angle, acetabular roof angle, head lateralization index, and minimum width of the joint space were measured on radiographs made preoperatively, postoperatively, and at the time of final follow-up. Postoperative joint congruency was classified into four grades. RESULTS: The mean preoperative Merle d'Aubigné clinical score was 13.3 points, which improved to a mean of 15.4 points at the time of the latest follow-up (p < 0.0001). The mean center-edge angle improved from 0.7 degrees preoperatively to 29 degrees at three months postoperatively (p < 0.0001), the mean acetabular roof angle improved from 30 degrees to 11 degrees (p < 0.0001), the mean head lateralization index improved from 0.69 to 0.65 (p < 0.01), and the mean minimum width of the joint space improved from 2.2 to 2.5 mm (p < 0.0003). Ten hips had radiographic evidence of progression of osteoarthritis. Kaplan-Meier survivorship analysis, with radiographic signs of progression of osteoarthritis as the end point, predicted a ten-year survival rate of 72.2%. CONCLUSIONS: Rotational acetabular osteotomy for advanced osteoarthritis secondary to dysplasia of the hip in properly selected patients can improve clinical scores and is associated with a lack of radiographic signs of progression of osteoarthritis in most patients. LEVEL OF EVIDENCE: Therapeutic Level IV.     

Eccentric rotational acetabular osteotomy for acetabular dysplasia: follow-up of one hundred and thirty-two hips for five to ten years

BACKGROUND: Eccentric rotational acetabular osteotomy for the operative treatment of acetabular dysplasia consists of a spherical but eccentric osteotomy and rotation of the acetabulum that moves the center of rotation of the head of the femur medially and distally. No bone graft is needed. The reorientation of the acetabular fragment not only improves acetabular coverage but also restores the center of rotation of the subluxated hip. The purpose of this paper was to describe eccentric rotational acetabular osteotomy for the treatment of acetabular dysplasia and to evaluate its clinical and radiographic outcomes. METHODS: We performed this procedure consecutively in 132 hips in 126 patients with dysplasia of the hip. Eighteen hips had no osteoarthritis, fifty-three had early osteoarthritis, and sixty-one had advanced osteoarthritis. Seven patients were male, and 119 were female. The average age was 36.5 years at the time of the index operation, and the average duration of follow-up was 7.5 years. Twenty-three hips in twenty-two patients were also treated with intertrochanteric valgus osteotomy to further improve joint congruency at the time of the acetabular osteotomy. RESULTS: The average preoperative Harris hip score of 71 points improved to an average score of 89 points at the time of the latest follow-up. The average center-edge angle improved from 0 to 36 . An apparent change in the stage of the arthritis was observed in seven hips (5%), one of which had had early-stage disease and six of which had had advanced disease preoperatively. CONCLUSIONS: Eccentric rotational acetabular osteotomy appears to be a good treatment option for young patients with either early or advanced hip osteoarthritis secondary to dysplasia.     

Rotational acetabular osteotomy in patients forty-six years of age or older: comparison with younger patients

BACKGROUND: Satisfactory intermediate and long-term results of periacetabular rotational osteotomy for early osteoarthritis secondary to dysplasia of the hip have been reported for patients in the third and fourth decades of life. The purpose of the present study was to examine the usefulness of rotational acetabular osteotomy in patients older than forty-six years of age. METHODS: A retrospective review of two groups of patients who had been treated with a rotational acetabular osteotomy was conducted. The older group consisted of twenty-four patients (twenty-six hips) with early-stage osteoarthritis who had a mean age at the time of surgery of 50.9 years (range, forty-six to fifty-eight years) and a mean duration of follow-up of 8.2 years (range, five to thirteen years), and the younger group consisted of sixty patients (sixty-three hips) who had a mean age at the time of surgery of 34.4 years (range, thirteen to forty-five years) and a mean duration of follow-up of 8.3 years (range, five to fourteen years). Clinical follow-up was based on the system of Merle d'Aubigne and Postel. The center-edge angle, acetabular roof angle, and head lateralization index were measured on radiographs made preoperatively, postoperatively, and at the time of follow-up. Preoperative and postoperative joint congruencies were classified into four grades. RESULTS: Preoperatively, the mean Merle d'Aubigne clinical score was 13.9 points in the older group and 14.1 points in the younger group. In both groups, this score improved significantly to a mean postoperative follow-up score of 16.6 points (p < 0.0001), with no significant difference between the two groups. The mean center-edge angle improved from 3.2 degrees preoperatively to 34 degrees postoperatively (p < 0.0001) in the older group and from -2.1 degrees preoperatively to 34 degrees postoperatively (p < 0.0001) in the younger group. The mean acetabular roof angle improved from 29 degrees to 5.9 degrees (p < 0.0001) in the older group and from 31 degrees to 2.9 degrees (p < 0.0001) in the younger group. The mean head lateralization index improved from 0.67 to 0.64 (p < 0.01) in the older group and from 0.66 to 0.61 (p < 0.0001) in the younger group. Progression of osteoarthritis was observed radiographically at the time of follow-up in five hips in the older group and in four hips in the younger group. Kaplan-Meier survivorship analysis, with radiographic progression of osteoarthritis as the end point, predicted a ten-year survival rate of 70.0% in the older group and 93.7% in the younger group; this difference was not significant, with the numbers available (p = 0.062, log-rank test). CONCLUSIONS: Our results indicate that rotational acetabular osteotomy for elderly patients can prevent progression of osteoarthritis (as indicated by a survival rate of 70% at ten years) and that in selected cases it is worthwhile at least as a temporizing operation.     

Periacetabular osteotomy for the treatment of severe acetabular dysplasia

BACKGROUND: The optimal treatment of severe acetabular dysplasia with subluxation of the femoral head or the presence of a secondary acetabulum remains controversial. The purpose of this study was to analyze the extent of surgical correction and the early clinical results obtained with the Bernese periacetabular osteotomy for the treatment of severely dysplastic hips in adolescent and young adult patients. METHODS: Sixteen hips in thirteen patients with an average age of 17.6 years (range, 13.0 to 31.8 years) were classified as having severe acetabular dysplasia (Group IV or V according to the Severin classification). Eight hips were classified as subluxated, and eight had a secondary acetabulum. Preoperatively, all patients had hip pain and sufficient hip joint congruency on radiographs to be considered candidates for the osteotomy. All sixteen hips underwent a Bernese periacetabular osteotomy, and six of them underwent a concomitant proximal femoral osteotomy. Postoperatively, the hips were assessed radiographically to evaluate correction of deformity, healing of the osteotomy site, and progression of osteoarthritis. Clinical results and hip function were measured with the Harris hip score at an average of 4.2 years postoperatively. RESULTS: Comparison of preoperative and follow-up radiographs demonstrated an average improvement of 44.6 degrees (from -20.5 degrees to 24.1 degrees ) in the lateral center-edge angle of Wiberg, an average improvement of 51.0 degrees (from -25.4 degrees to 25.6 degrees ) in the anterior center-edge angle of Lequesne and de Seze, and an average improvement of 25.9 degrees (from 37.3 degrees to 11.4 degrees ) in acetabular roof obliquity. The hip center was translated medially an average of 10 mm (range, 0 to 31 mm). All iliac osteotomy sites healed. The average Harris hip score improved from 73.4 points preoperatively to 91.3 points at the time of the latest follow-up. Eleven of the thirteen patients (fourteen of the sixteen hips) were satisfied with the result of the surgery, and fourteen hips had a good or excellent clinical result. Major complications included loss of acetabular fixation, which required an additional surgical procedure, in one patient and overcorrection of the acetabulum and an associated ischial nonunion in another patient. Both patients had a good clinical result at the time of the latest follow-up. There were no major neurovascular injuries or intra-articular fractures. CONCLUSIONS: The periacetabular osteotomy is an effective technique for surgical correction of a severely dysplastic acetabulum in adolescents and young adults. In this series, the early clinical results were very good at an average of 4.2 years postoperatively; the two major complications did not compromise the good clinical results.     

Periacetabular osteotomy for the treatment of acetabular dysplasia associated with major aspherical femoral head deformities

BACKGROUND: Acetabular dysplasia associated with deformity of the proximal part of the femur can result in hip dysfunction and degenerative arthritis in young adults. The optimal method of surgical correction for these challenging combined deformities remains controversial. METHODS: We retrospectively analyzed twenty-four hips in twenty patients who underwent a Bernese periacetabular osteotomy, which was done with a proximal femoral valgus-producing osteotomy in thirteen hips, for the treatment of acetabular dysplasia associated with proximal femoral structural abnormalities. The average age of the patients at the time of surgery was 22.7 years, and the average duration of clinical follow-up was 4.5 years. The Harris hip score and overall patient satisfaction with surgery were used to assess hip function and clinical results. Plain radiographs were used to assess the correction of the deformity, healing of the osteotomy, and progression of degenerative arthritis. RESULTS: The mean Harris hip score increased from 68.8 points preoperatively to 91.3 points at the time of the most recent follow-up (p<0.0001). Sixteen patients (nineteen hips) had an excellent clinical result, and one patient (one hip) had a good result. Two patients (two hips) had a fair result, and one patient (two hips) had a poor result. Twenty-two of the twenty-four hips improved clinically. There was an average improvement of 27.6 degrees in the lateral center-edge angle of Wiberg (p<0.0001), an average improvement of 33.1 degrees in the anterior center-edge angle of Lequesne and de Seze (p<0.0001), and an average improvement of 16.5 degrees in the acetabular roof obliquity (p<0.0001). The hip center was translated medially an average of 6.3 mm (p=0.0003). The T?nnis osteoarthritis grade was unchanged in twenty hips, progressed one grade in three hips, and progressed two grades in one hip. There were three major technical complications. At the time of the most recent follow-up, none of the hips had required total hip arthroplasty. CONCLUSIONS: The combination of acetabular dysplasia and proximal femoral deformities presents a complex reconstructive problem. The range of motion and radiographic assessment of the hip are major factors in the selection of patients for surgery. In selected patients, the periacetabular osteotomy combined with concurrent femoral procedures, when indicated, can provide comprehensive deformity correction and improved hip function.     

Prophylaxis of secondary osteoarthrosis with spherical osteotomy in residual acetabular dysplasia

The aim of this study was to evaluate whether or not spherical acetabular osteotomy prevents progression of osteoarthrosis in hip joints with residual dysplasia and which radiological parameters can be used postoperatively as predictive factors concerning the outcome. Sixty-eight out of 78 joints were re-investigated with a mean follow-up of 11.2 years after the index operation. Twenty-three Wagner type 1 and 45 type II osteotomies were performed. At surgery, the mean age of the patients was 26 years; 90% of joints showed no or mild degenerative changes, 26% presented with a good or excellent Harris hip score. At follow-up, 28% of patients had improved in function, mean Harris hip score rated 75 points. The mean center-edge (CE) angle improved from -4 degrees to 18 degrees, and the anterior center-edge (ACE) angle from -4 degrees to 26 degrees. The weight-bearing zone of the acetabulum showed an acetabular index (AC) angle of 27 degrees preoperatively and 14 degrees postoperatively. Statistical analysis proved a significant correlation between the normal postoperative values of the acetabulum/femoral-head index of Heyman and Herndon and the absence of degenerative joint changes at follow-up. 73.5% of the hips had not markedly progressed to secondary osteoarthrosis, but 26.5% of joints had deteriorated: 7.4% of them due to perioperative complications and early postoperative trauma. In 8.8% (severe dysplasia) only partial reorientation was possible, which explains the progression of arthrosis, but 10.2% progressed despite sufficient correction.     

Multiple drillings of the acetabular fossa induce early joint remodeling after rotational acetabular osteotomy for hip dysplasia

INTRODUCTION: We previously observed medial and/or lateral expansion of the subchondral bone in the acetabulum 3 years postoperatively in two out of three cases in which rotational acetabular osteotomy (RAO) was performed. Then we performed multiple drillings at the acetabular fossa in order to induce expansion of the medial subchondral bone in the acetabulum. The purpose of this study is to evaluate the effect of multiple drillings on early joint remodeling after RAO. PATIENTS AND METHODS: Twenty-one women (21 joints) who had undergone RAO with multiple drillings at acetabular fossa (group D) were included. As a control group, 12 women (14 joints) without drillings in RAO procedure were observed (group C). The center-edge angle (CE angle), acetabular roof obliquity (AC angle), head lateralization index (HLI), and the angle between medial and lateral edge of acetabular roof (LOM angle) were measured on the radiographs preoperatively, at 1 month, 2 years postoperatively, and at the last follow-up. RESULTS: As regards the mean CE angle, AC angle, and HLI, there was no significant difference between the two groups. The mean LOM angle at 2 years and the last follow-up demonstrated significant difference between the two groups. INTERPRETATION: Biomechanical and anatomical changes after RAO cause increasing stress to the medial side of the acetabulum. Moreover, bone marrow-stimulating procedure at acetabular fossa might be beneficial to develop early joint remodeling affected by bone marrow derived cells such as mesenchymal stem cells.     

应用S-ROM全髋关节置换术治疗Crowe Ⅳ型髋臼发育不良

目的总结采用粗隆下截骨和生物固定型带股骨柄模块的人工关节假体治疗CroweⅣ型髋臼发育不良伴骨关节炎的效果及经验。方法回顾从2004年2月到2009年4月对12例21髋CroweⅣ型髋臼发育不良伴骨关节炎患者治疗的详细过程及疗效,记录所有的并发症。全部采用粗隆下截骨和S-ROM生物固定型人工关节假体置换术进行治疗。髋臼杯假体均植入真臼位置,7例13髋采用自体股骨头于髋臼外上方作结构性植骨,均作了粗隆下缩短截骨术,平均截骨长度为39.4 mm(35~50 mm)。结果平均随访30.8个月(6~62个月)。髋关节Harris评分明显改善(t=24.862,P0.01),从术前的平均(38.2±6.4)分(28~48分)到术后平均(82.1±8.6)分(62~94分)。术后肢体均得到不同程度的延长(t=12.099,P0.01),平均(33.5±12.7)mm(11~65 mm)。术前所有患者均有明显跛行,术后4例有轻度跛行,2例仍需扶双拐行走。19髋股骨截骨处愈合良好,2髋截骨处延迟愈合。在最后一次回访时显示髋臼假体和股骨柄假体位置均良好,无松动、下沉、断钉、骨溶解及异位骨化出现。髋关节中心平均下移了73.0 mm(46~105 mm)。结论利用S-ROM带股骨柄模块的生物固定型人工关节假体的高度适配性,加上在真臼位置加深髋臼,适当植骨,以及精确的粗隆下截骨,是治疗CroweⅣ型髋臼发育不良伴骨关节炎的良好选择。     

Long-Term Results of Periacetabular Rotational Osteotomy Concomitantly With Arthroscopy in Adult Acetabular Dysplasia

BackgroundAlthough the long-term results of periacetabular osteotomy in acetabular dysplasia have been well documented, there is paucity in reports on the long-term outcomes of periacetabular osteotomy with simultaneous hip arthroscopy. This study aimed to assess the cumulative 10-year outcomes of periacetabular rotational osteotomy with concomitant hip arthroscopy.MethodsThrough an arthroscopic procedure, the status of the labrum was assessed, and torn labrum was debrided. Evaluations on survival from conversion to total hip arthroplasty and success in radiographic and clinical long-term results were completed in 39 hips (36 patients). Acetabular parameters (center-edge angle, Sharp angle, acetabular-head index, and head lateralization index), Tönnis grades on radiograph, Harris Hip Score, and range of motion of the hip were evaluated. Survivorship analyses were evaluated with the Kaplan-Meier method.ResultsThirty-eight hips (97.4%, 95% confidence interval 0.832-0.996) were preserved for 12.8 ± 1.7 years on average, and only 1 hip was converted to total hip arthroplasty at 7.8 years. All the acetabular parameters were improved (P < .001). Twenty-eight hips (71.8%) showed unchanged or improved Tönnis grades at the latest follow-up. The average Harris Hip Score was significantly better than the preoperative value (P < .001), and range of motion was not significantly different until the latest follow-up.ConclusionSufficient acetabular reorientation, such as periacetabular rotational osteotomy, with concomitant arthroscopic debridement showed successful long-term outcomes for acetabular dysplasia in adults.