生物型人工全髋关节置换术联合打压植骨治疗类风湿性关节炎伴髋臼内陷

目的探讨使用生物型假体行人工全髋关节置换术联合打压植骨重建髋臼治疗类风湿性关节炎伴髋臼内陷的疗效。方法 2001年1月-2009年4月,收治类风湿性关节炎伴髋臼内陷患者18例(20髋)。男6例,女12例;年龄36~62岁,平均46岁。病程3~10年,平均6年。术前Harris评分为(40.25±6.68)分。髋臼内陷(5.70±4.26)mm;根据Sotelo-Garza和Charnley分型:1型(内陷1~5 mm)12髋,2型(内陷6~15 mm)5髋,3型(内陷15 mm)3髋。采用生物型关节假体行人工全髋关节置换术,自体骨打压植骨重建髋臼。结果手术时间48~126 min,平均74 min;失血量150~650 m L,平均350 m L。术后2例切口愈合不良,3例出现下肢深静脉血栓形成;其余患者切口均Ⅰ期愈合,无并发症发生。患者均获随访,随访时间60~156个月,平均108个月。X线片复查示,术后6个月内自体移植骨均与髋臼融合。末次随访时髋臼内陷(—1.11±0.45)mm,与术前比较差异有统计学意义(t=5.66,P=0.00)。末次随访时,Harris评分为(87.20±4.21)分,与术前比较差异有统计学意义(t=—27.68,P=0.00)。随访期间均无髋臼假体松动发生。结论对于类风湿性关节炎伴髋臼内陷,选择生物型关节假体行人工全髋关节置换术,同时联合自体骨打压植骨重建髋臼治疗可获得较满意中期疗效。     

全髋置换术中髋臼内陷的处理

目的探讨人工全髋关节置换术中髋臼内陷的处理方法及早期疗效。方法 2006年7月至2012年12月,收治继发性髋臼内陷症21例28髋,男12例17髋,女9例11髋;年龄26~68岁,平均56.3岁;原发疾病:类风湿关节炎9例14髋,强直性脊柱炎6例8髋,感染4例4髋(结核和化脓性关节炎各2例2髋),髋臼骨折畸形愈合2例2髋;轻度髋臼内陷6髋、中度髋臼内陷12髋、重度髋臼内陷10髋。患者均行人工全髋关节置换,术中单纯植入生物型臼杯6髋,打压植骨后直接植入生物型臼杯18髋,直接植入骨水泥杯2髋,打压植骨后骨水泥杯固定2髋。结果术后21例28髋切口均一期愈合,无感染及下肢深静脉血栓形成等并发症发生。患者均获随访,随访时间12~78个月,平均42个月。末次随访时,髋关节Harris评分为(87±4.1)分,术前Harris髋关节评分平均(45±3.3)分,较术前有显著差异,优22髋,良6髋,优良率100%。臼杯平均外翻角(42±3.5)°。植骨均骨性融合,无臼杯再次内陷及松动。髋关节活动度增加:屈曲增加(64.3±4.5)°,外展增加(20.5±3.5)°,内旋增加(16.5±2.5)°,外旋增加(19±2.5)°。末次随访时X线片显示所有假体均获得骨性稳定。术前股骨头内陷3~30 mm,平均13 mm;术后股骨头内陷0~5 mm,平均2 mm。人工股骨头旋转中心外移3~28 mm,平均10.5 mm。假体位置良好,无松动、下沉,植骨与髋臼融合,无髋臼再次内陷。结论人工全髋关节置换治疗髋臼内陷时,恢复患髋股骨偏心距及髋臼旋转中心,可获满意早期疗效。     

THA治疗继发性髋臼内陷合并重度骨质疏松患者中长期疗效

目的 探讨人工全髋关节置换术(total hip arthroplasty, THA)治疗类风湿性关节炎(rheumatoid arthritis, RA)继发髋臼内陷合并重度骨质疏松患者手术要点及中长期疗效。方法 回顾性分析2013年1月至2017年12月，新疆维吾尔自治区人民医院骨科中心RA继发髋臼内陷接受THA患者共13例，其中女12例，男1例；年龄46～64岁，平均年龄(53.5±3.4)岁。通过Harris评分评估患者术后髋关节功能恢复情况。定期随访X线片，观察假体位置及假体-骨骼间骨长入情况。结果 患者手术时间55～113min,平均为(86.3±9.8)min;失血量256～510 mL,平均(310.0±45.2) mL。随访时间46～65个月，平均随访时间(55.2±4.7)个月。Harris评分术前为(56.8±5.3)分，末次随访时提升为(89.4±6.3)分，差异有统计学意义(P<0.05)。术前髋关节旋转中心(股骨头中心)至Kohler’s线距离为(18.52±3.4) mm,术后距离为(21.8±3.8) mm,差异有统计学意义(P<0.05)。...     

生物型全髋关节置换术治疗伴有股骨头颈短缩的髋臼内陷症

目的 探讨生物型全髋关节置换术(THA)治疗伴有股骨头颈短缩的髋臼内陷症的手术技巧和疗效.方法 回顾性分析2008年8月至2012年3月采用THA治疗的15例(17髋)伴有股骨头颈短缩畸形的髋臼内陷症患者资料,男6例6髋,女9例11髋;年龄21 ～68岁,平均45.6岁.髋臼内陷症按Dunlop诊断标准分度:轻度1髋,中度11髋,重度5髋.股骨头颈短缩程度:轻度短缩5髋,中度短缩8髋,重度短缩4髋.术后随访行X线片检查观察假体与骨界面骨愈合的情况,采用髋关节Harris评分标准评定患髋功能. 结果 15例患者术后获10 ～ 46个月(平均28.5个月)随访.15例患者17髋术后均立即实现了髋臼及股骨柄的生物性压配.术后3个月X线片显示均获广泛性骨长入,达骨性固定.末次随访时无假体松动和髋臼再次内陷.术后6个月髋关节Harris评分由术前平均(43.1±4.8)分改善至(91.2±5.2)分,末次随访仍维持在(92.5±3.1)分,术后6个月、末次随访时分别与术前比较差异均有统计学意义(P＜0.05). 结论 生物型THA治疗伴有股骨头颈短缩的髋臼内陷症疗效良好,术中操作要点是选择短头试模进行髋关节复位,在保持髋关节张力情况下对髋关节囊及周围软组织挛缩由里向外依次分层松解.     

全髋关节置换术治疗髋臼内陷症

[目的]探讨全髋关节置换术治疗伴有疼痛的髋臼内陷症（Otto’s disease）的疗效。[方法]15例患者接受了THA,其中男性7例,女性8例;平均年龄65岁（56～70岁）。5例（33.3%）为Ⅰ度内陷,10例（66.7%）为Ⅱ度内陷。所有患者的髋臼侧均接受了自体或异体颗粒骨移植,并应用多孔生物型髋臼假体。手术前后记录髋关节Harris评分,拍摄标准X线片。[结果]平均随访时间为3年（1～4年）。Harris术前平均为45分（39～60分）,术后平均为85分（70～100分）。放射学表现,术前平均股骨头内陷8.8 mm（6～18 mm）,术后人工股骨头平均距Kohler’s线外移10 mm（6～13 mm）。所有患者髋臼假体没有失败及髋臼侧移植骨吸收现象。术后1年经拍片证实自体或异体移植骨均与宿主髋臼骨愈合在一起。[结论]应用自体股骨头骨或异体颗粒骨移植填充髋臼结合多孔生物型髋臼假体,治疗Otto’s病,可获得较好的疗效,移植骨可与宿主骨很好地结合在一起。     

成人髋臼发育不良全髋置换的髋臼重建

目的探讨应用全髋关节置换术治疗髋臼发育不良继发骨性关节炎时臼杯假体安放的方法及其对手术疗效的影响。方法对48例(56髋)髋臼发育不良行全髋置换时,部分应用髋臼内陷成形术向内或内下方加深髋臼并选择小型臼杯假体。通过Ranawat三角测量术前及术后股骨头中心距理想旋转中心的水平和垂直距离,应用Mark髋臼四分法判断臼杯假体的实际位置。行Harris临床评分及X线检查做为疗效判定标准。结果Ranawat三角测量,术前股骨头中心距理想旋转中心的水平距离平均为18.2 mm,术后为1.52 mm;术前垂直距离平均为10.26 mm,术后为5.68 mm。手术前后比较,差异有统计学意义(P<0.01)。Mark髋臼四分区中,臼杯假体位于内侧区者为46髋,其中内下区34髋。术前Harris评分为32.5～60.3分,术后为76.6～96.5分。无假体松动和移位,无翻修病例。结论在髋臼发育不良行全髋置换的髋臼重建中,应强调向内方或内下方加深髋臼,接近于真臼安放臼杯假体,以尽量恢复髋关节理想旋转中心;选择小型臼杯假体以获得髋臼宿主骨的良好覆盖,减少髋臼植骨的机会。     

人工全髋关节置换治疗髋臼内陷症的早期疗效

目的探讨人工全髋关节置换治疗髋臼内陷症的方法及早期疗效。方法 2006年1月-2010年2月,收治髋臼内陷症16例16髋。男6例,女10例;年龄39～72岁,平均56.5岁。病程1年6个月～35年,中位病程6.4年。左髋7例,右髋9例。原发性3例,继发性13例。髋关节Harris评分为(49.5±5.5)分。髋臼内陷按Dunlop等的诊断标准分度:轻度3例,中度9例,重度4例。患者均行人工全髋关节置换,髋臼重建时采用植骨及非骨水泥型髋臼假体恢复患髋股骨偏心距及髋臼旋转中心。结果术后16例切口均Ⅰ期愈合,无感染及下肢深静脉血栓形成等并发症发生。患者均获随访,随访时间12～62个月,平均37个月。末次随访时,髋关节Harris评分为(90.5±4.5)分,与术前比较差异有统计学意义(t=49.578,P=0.000)。X线片显示假体位置良好,无松动、下沉,植骨与髋臼融合,无髋臼再次内陷。结论人工全髋关节置换治疗髋臼内陷时,采用植骨及非骨水泥型髋臼假体恢复患髋股骨偏心距及髋臼旋转中心,可获满意早期疗效。     

双锥面螺旋臼及加长矩型柄在髋关节翻修术中的应用

目的：评价Zweymiiller双锥面螺旋臼及加长矩形柄在人工全髋关节翻修中的临床应用效果。方法：自1996年11月～2001年1月，对55例56髋行髋关节翻修手术，男26例．女29例；年龄30～80岁，平均59岁。初次人工髋关节置换前诊断为股骨颈骨折27例，股骨头缺血性坏死22例，类风湿性关节炎2例，强直性脊柱炎3例，髋关节创伤性关节炎1例。初次行股骨头置换18例19髋，其中骨水泥固定3例3髋，非骨水泥固定15例16髋；全髋关节置换37例37髋，其中骨水泥固定25髋，非骨水泥固定12髋。术后20髋因髋关节严重疼痛、36髓因无菌性假体松动行关节翻修术。翻修手术中．16髋行髋臼植骨术，其中自体碎屑植骨15髋．异体大块植骨1髋。所有病例均使用双锥面螺旋臼及加长矩形柄系统固定。术后随访时间为5～63个月，平均31个月。结果：术后随访32例33髓．所有患者髓关节基本无疼痛，X线片示髋臼和股骨柄假体位置满意，无松动和感染征象，髋臼植骨处愈合良好。3例股骨柄假体正位X线片仅Ⅰ出现约1mm宽的透亮带，临床检查无松动迹象。Harris评分由术前的平均40.6分(10～71分)提高到术后的平均80．4分(55～97分)。结论：对于髋臼环完整需行人工髋关节翻修术的病例，使用Zweymiiller双锥面螺旋臼及加长矩形柄系统固定牢固，临床效果满意。     

全髋关节置换术治疗髋臼内陷症的疗效分析

目的分析人工全髋关节置换术治疗髋臼内陷症的早期临床疗效。方法回顾性分析自2010-02—2015-01采用全髋关节置换术治疗的32例(32髋)髋臼内陷症,术中采取打压植骨方法对髋臼进行重建,24例采用非骨水泥型假体,8例采用骨水泥型假体。结果 30例获得随访,随访时间平均4.7(2.1~7.2)年。术后复查骨盆X线片显示植骨与髋臼融合满意,假体无松动、下沉,无髋臼再次内陷。末次随访时髋关节活动度为200°~290°(240.2±20.2)°,较术前明显改善;末次随访时髋关节功能Harris评分为86~98(91.5±4.5)分,较术前明显提高,差异有统计学意义(P0.05)。结论全髋关节置换术治疗髋臼内陷症可明显缓解患者的临床症状,恢复良好髋关节功能及日常生活能力,早期疗效满意。     

全髋置换术治疗强直髋合并髋臼内陷的临床疗效观察

目的探讨全髋置换术治疗强直性脊柱炎后期强直髋合并髋臼内陷症的围手术期管理、手术策略、中远期疗效观察。 方法2003年7月至2013年10月期间,青岛市海慈医疗集团创伤骨科收治强直性脊柱炎伴强直髋合并髋臼内陷患者19例,共23髋,均为符合国际脊柱关节炎协会(ASAS)2010年中轴型脊柱关节炎诊断标准的强直性脊柱炎,对其实施生物型人工全髋置换术,其中男16例,女3例,双髋病例4例。年龄32～65岁,平均(41.5±0.5)岁。组内患者强直性脊柱炎(AS)病程至手术前为10～42年,平均病程(22.3±1.3)年;术前术后进行Harris评分,并记录髋关节总活动度。采用配对样本t检验,对术前术后Harris功能评分及髋关节活动度进行分析。 结果术后共有17例21髋得到随访,平均随访时间(45.2±2.7)个月。末次随访疼痛评分为(40.50±0.71),较术前评分(11.80±3.32)提高,差异有统计学意义(t＝ 11.17,P <0.01)。功能评分由术前(7.10±1.10),提高到术后的(39.70±2.02),差异有统计学意义(t ＝8.83,P <0.01)。术后髋关节总活动度较术前明显改善(t ＝8.78,P <0.01)。 结论人工全髋关节置换术治疗髋臼内陷症安全有效,髋臼重建尽可能使用植骨术及非骨水泥假体,以获得更好的中远期疗效。     

双锥面螺旋臼固定治疗髋关节中心性脱位的中长期临床效果分析

目的 探讨使用双锥面螺旋臼假体固定髋关节中心性脱位病例的长期临床效果.方法 1998年5月至2006年9月北京大学人民医院关节病诊疗研究中心对31例髋关节中心性脱位患者的39侧髋关节行人工全髋关节置换术或翻修术,其中男性12例,女性19例.手术时平均年龄为57.6岁(30～82岁).引起髋关节中心性脱位的病因包括:类风湿关节炎3例6髋;股骨头坏死继发髋关节炎7例12髋,人工股骨头置换术后髋臼磨损11例11髋、髋臼假体松动10例10髋.术中髋臼部分均使用双锥面螺旋臼进行生物学固定.术前Harris评分平均为31.0分(14～61分).结果 所有病例均在术后6个月、1年时随访,2例3髋患者分别因肺癌、急性心肌梗死死亡.24例31髋获得随访,平均随访时间7.4年(5.0～11.5年).末次随访时Harris评分平均为84.7分(70～95分).1例股骨头坏死行双髋同时置换患者术后右髋出现感染,行关节取出骨水泥旷置术,但因内科疾病不稳定未再行翻修术.1例类风湿关节炎患者双髋关节分期手术,术后7年随访时左侧髋臼假体有内侧轻度移位,边缘有透亮线,但患者日常功能好,无疼痛.其余所有病例双锥面螺旋臼假体全部存留,患者日常生活功能良好,对手术效果满意.结论 髋关节中心性脱位使用双锥面螺旋臼的固定效果确切,平均超过7.4年的中长期随访结果显示效果良好.

Abstract：

Objective To discuss long-term clinical results of using Zweymüller cup to treat protrusio acetabuli. Methods From May 1998 to September 2006, 31 patients with 39 hips diagnosed protrusio acetabuli were treated with Zweymtüller cup in total hip arthroplasties or revisions. There were 12 men and 19 women with average age of 57.6 years (from 30 to 82 years). The reasons causing protrusio acetabuli were as followed: rheumatoid arthritis 3 cases 6 hips, osteoarthritis followed femoral head necrosis 7 cases 12 hips, acetabular wear after hemi-arthroplasty 11 cases 11 hips and acetabular component Results All cases were followed up 6 months and one year after operations. Two patients with 3 hips were died for lung cancer and acute myocardial infarction respectively. Twenty-four cases with 31 hips got recent follow-up with average 7. 4 years (from 5.0 to 11.5 years). The average Harris score improved from 31.0 (from 14 to 61) preoperatively to 84. 7(from 70 to 95) postoperatively. There was one infection in right hip after bilateral hip arthroplasty treating by removel prosthesis and cement spacer insert. But until now this patient still did not get revision for her internal medicine. One rheumatoid arthritis patient with two-stage bilateral hip arthroplasty was found slight internal migration and loosening line of left acetabular component,but the patient had no pain with good hip function. All other cases had good hip functions and were very fixations and perfect medium and long-term clinical results for over 7.4 years.     

髋臼内陷症的全髋关节置换术

目的 探讨全髋关节置换术治疗髋臼内陷症的手术操作方法和临床疗效.方法 2003年6月至2008年5月,采用全髋关节置换术治疗髋臼内陷症31例35髋,男16例18髋,女15例17髋;年龄36～71岁,平均52.2岁.手术均采用后外侧入路,股骨头取出困难时采用逆行取出法,分别处理髋臼环和髋臼底,取自体松质颗粒骨修复骨缺损,采用压配方式植入非骨水泥型全髋关节假体.术后1、3、6、12个月门诊随访,以后每年随访1次,随访时采用Harris髋关节评分评估髋关节功能,摄X线片观察假体是否有松动和再次内陷,植骨是否愈合.结果 全部病例随访19～152个月,平均46.5个月.1例患者术后第2天出现右下肢深静脉血栓,经抗凝处理后痊愈;1例术后2个月出现轻度大腿痛,无特殊处理,术后6个月消失,无其他并发症发生.术前Harris髋关节评分平均(48.9±6.5)分,末次随访增至平均(91.2±5.7)分,较术前平均改善42.3分.X线片显示所有假体均获得骨性稳定,无松动和再次内陷,术后平均6个月植骨愈合.结论 对于内陷髋臼,采用不同于普通全髋关节置换的手术技术,外移髋臼至旋转中心,用植骨修复骨缺损,选择非骨水泥型假体重建髋臼,可获得较好的临床效果,髋臼松动和再次内陷发生率低.

Abstract：

Objective To evaluate the clinical outcome of total hip arthroplasty (THA) for protrusio acetabuli. Methods Between 2003 to 2008, 31 patients(35 hips) with protrusio acetabuli were treated with THA, including 16 males (18 hips) and 15 females (17 hips). The age ranged from 36 to 71 years (average age 52.2 years). The femoral heads were moved out with retrograde method when necessary via posterior-lateral hip incision. The acetabular loops and bottoms were prepared respectively. Auto-bone grafting was used to repair acetabular defects and cementless prostheses were planted with press-fit skills. At follow-up visit,the hip functions were evaluated by Harris score. The loosening, re-protrusion and the union of graft bone was judged by X-ray. Results The mean follow-up was 46.5 months (19-152 months). One patient developed DVT on the second day post-operatively who recovered well after anticoagulation treatment. One patient complained of gentle thigh pain which disappeared at 6 months. No other complication was found. The mean Harris scores had improved from 48.9±6.5 pre-operatively to 91.2±5.7 post-operatively. All prostheses acquired bone stabilization with no sign of loosening and re-protrusion and the grafts bone were healed at a mean 6 months according to X-ray. Conclusion THA with acetabular bone grafting and cementless component for protrusio acetabuli have acquired excellent results and prevented loosening and re-protrusio effectively.     

Impacted morsellized bone grafting and cemented primary total hip arthroplasty for acetabular protrusion in patients with rheumatoid arthritis: an 8- to 18-year follow-up study of 36 hips

Between 1979 and 1989, we performed 36 primary total hip replacements in 31 rheumatoid arthritis patients with protrusio acetabuli. The deficient acetabulum was reconstructed with autologous morsellized bone grafts from the femoral head. 3 patients were lost to follow-up. 12 patients (13 hips) died within 8 years postoperatively, none had a revision. 16 patients (20 hips) were reviewed at an average follow-up of 12 (8-18) years. In 2 hips, a revision was performed for aseptic loosening of the acetabular component, 65 and 8 years after primary surgery, which means a 90% (95% CI: 77%-100%) survival rate at 12 years (Kaplan Meier analysis). This technique is a good option in cases with protrusio acetabuli due to rheumatoid arthritis.     

Impacted morsellized bone grafting and cemented primary total hip arthroplasty for acetabular protrusion in patients with rheumatoid arthritis: An 8- to 18-year follow-up study of 36 hips

Between 1979 and 1989, we performed 36 primary total hip replacements in 31 rheumatoid arthritis patients with protrusio acetabuli. The deficient acetabulum was reconstructed with autologous morsellized bone grafts from the femoral head. 3 patients were lost to follow-up. 12 patients (13 hips) died within 8 years postoperatively, none had a revision. 16 patients (20 hips) were reviewed at an average follow-up of 12 (8-18) years. In 2 hips, a revision was performed for aseptic loosening of the acetabular component, 6.5 and 8 years after primary surgery, which means a 90% (95% CI: 77%-100%) survival rate at 12 years (Kaplan Meier analysis). This technique is a good option in cases with protrusio acetabuli due to rheumatoid arthritis.     

Impacted morsellized bone grafting and cemented primary total hip arthroplasty for acetabular protrusion in patients with rheumatoid arthritis: An 8- to 18-year follow-up study of 36 hips

Between 1979 and 1989, we performed 36 primary total hip replacements in 31 rheumatoid arthritis patients with protrusio acetabuli. The deficient acetabulum was reconstructed with autologous morsellized bone grafts from the femoral head. 3 patients were lost to follow-up. 12 patients (13 hips) died within 8 years postoperatively, none had a revision. 16 patients (20 hips) were reviewed at an average follow-up of 12 (8-18) years. In 2 hips, a revision was performed for aseptic loosening of the acetabular component, 6.5 and 8 years after primary surgery, which means a 90% (95% CI: 77%-100%) survival rate at 12 years (Kaplan Meier analysis). This technique is a good option in cases with protrusio acetabuli due to rheumatoid arthritis.     

The influence of technique on fixation of primary total hip arthroplasty in patients with rheumatoid arthritis

This is a prospective, consecutive study of 98 total hip arthroplasties implanted by 1 surgeon in 66 patients with rheumatoid arthritis. The mean follow-up time was 7.4 years (range, 2-13 years). All 98 acetabular components were uncemented titanium fiber metal-coated components fixed with multiple screws. Sixty-five hips had bulk or cancellous allograft for protrusio acetabuli. Following a prospective protocol based on patient age, 51 hips had an uncemented femoral component, and 47 hips had a cemented femoral component. Using the Harris Hip Score, 30 hips were rated as excellent; 44, good; 15, fair; and 9, poor. There were no early deep infections. One hybrid hip was removed for late metastatic infection at 7 years. Radiographic evaluation of 98 acetabular components showed 1 case of septic loosening, 2 cases of aseptic loosening (1 patient asymptomatic), and 1 case with severe wear and ischial osteolysis. None of the 47 cemented femoral components subsided, and osteolysis was seen in only 3 femora (7%). Of the 51 uncemented femoral components, subsidence occurred in 7 hips (14%), and osteolysis occurred in 15 hips (30%). Uncemented acetabular components have a high rate of success in patients with rheumatoid arthritis who have a total hip arthroplasty. There is a high rate of subsidence and osteolysis, however, with first-generation cementless femoral components.     

Bone-grafting in total hip arthroplasty for protrusio acetabuli. A follow-up note

The results of total hip arthroplasty with the use of medial and superior bone-graft augmentation in thirty-nine hips (thirty-two patients) that had protrusio acetabuli were previously reported after two to eight years (mean, 4.7 years) of follow-up. We followed the surviving patients for 10.9 to 17.4 years (mean, 12.8 years). The average Harris hip-rating was 72 points--an average drop of 17 points since the previous report. The average was 64 points for patients who had rheumatoid arthritis and 83 points for those who had another diagnosis. Radiographic evaluation demonstrated definite, probable, and possible loosening in about 20, 10, and 60 per cent of the hips, respectively. Of the six hips that had definite loosening, four (10 per cent of the total series) had progression of the protrusion (acetabular migration); operative revision was performed on two of those four hips and on two other hips, in which progression had ceased. Hips that had progressive protrusion demonstrated superior migration more often than medial migration. The rates of loosening and revision were similar to those in hips that did not have protrusio acetabuli. We concluded that augmentation of total hip arthroplasty with bone-grafting is effective in arresting the progression of protrusio acetabuli in most hips (90 per cent in our series).     

Precoated femoral component in primary hybrid total hip arthroplasty: results at a mean 10-year follow-up

This is a mid-term report at 10 years' mean follow-up of a study of a precoated femoral component used in primary hybrid total hip arthroplasty (THA). Of an original cohort of 98 hips undergoing THA performed by one surgeon, 75 hips in 65 patients (mean age, 67 years) were prospectively followed up for 7 to 12 years (mean, 10 years). All hips had the same porous coated acetabular component and a precoated femoral component (with an oval cross-section) implanted using Simplex bone cement (Howmedica, Rutherford, NJ). There was no femoral component loosening or revision. Two acetabular components in patients with rheumatoid arthritis and protrusio acetabulae had radiographic loosening; however, only 1 was symptomatic and was revised. Acetabular osteolysis was seen in 4 hips (5.3%), and minor femoral osteolysis was seen in 3 hips (4%). Used in this manner in this patient population, precoating is not detrimental to successful fixation at 10 years' mean follow-up of primary hybrid THA.