Gait analysis of patients with resurfacing hip arthroplasty compared with hip osteoarthritis and standard total hip arthroplasty

Patients with standard total hip arthroplasties may have reduced hip abduction and extension moments when compared with normal nonosteoarthritic hips. In comparison, patients after resurfacing total hip arthroplasty appear to have a near-normal gait. The authors evaluated temporal-spatial parameters, hip kinematics, and kinetics in hip resurfacing patients compared with patients with unilateral osteoarthritic hips and unilateral standard total hip arthroplasties. Patients with resurfacing walked faster (average 1.26 m/s) and were comparable with normals. There were no significant differences in hip abductor and extensor moments of patients with resurfacing compared with patients in the standard hip arthroplasty group. This study showed more normal hip kinematics and functionality in resurfacing hip arthroplasty, which may be due to the large femoral head.     

髋关节骨性关节炎选择全髋关节置换相关量化因素

目的 探讨髋关节骨性关节炎(OA)选择全髋关节置换术(THA)治疗的一些量化因素.方法 回顾性分析106例髋关节骨性关节炎,其中65例选择非手术治疗,41例选择全髋关节置换.分析两组年龄、经济收入、文化程度、发病持续时间、髋关节最狭窄处间隙值及Harris评分.结果 两组Harris评分、髋关节最狭窄处间隙值、经济收入及文化程度差异有统计学意义(P＜0.05);年龄及发病持续时间差异无统计学意义(P＞0.05).结论 患者的Harris评分值、髋关节最狭窄处间隙值、经济收入及文化程度4个指标的测量及综合分析可作为临床骨科专家决定髋关节骨性关节炎选择全髋置换重要的量化指标,而患者的年龄及发病持续时间仅可作为临床骨科医生决策的参考因素.     

全髋关节置换术治疗骨性关节炎患者围术期个人体验

目的对全髋关节置换术(THA)治疗骨性关节炎患者个人体验进行质性研究,为提高护理服务质量提供参考。方法采用半结构式访谈方法收集20例初次行THA的骨性关节炎患者术前、术后6周、术后6~12个月资料,将访谈内容进行总结、归纳和提炼。结果术前患者感疼痛、活动受限制、自卑及生活不便;术后因疼痛消失、关节功能改善而产生康复希望,积极参加康复锻炼,但对假体感到不安;随着术后时间的推移,患者逐渐重拾自我,接受髋关节屈曲受限的假体生活。结论医护人员应密切关注THA患者围术期各阶段个人感受,采取针对性护理措施,提高患者的生活质量。     

The efficacy of surgical treatment on locomotive syndrome and physical function in patients with lumbar spinal canal stenosis

BackgroundLocomotive syndrome is a condition of reduced mobility due to problems with locomotive organs. Although lumbar spinal canal stenosis is one of the major diseases constituting locomotive syndrome, only few studies have focused on the association between the two pathologies. We aimed to investigate the effect of surgery on lumbar spinal canal stenosis with respect to locomotive syndrome using various physical function tests, including locomotive syndrome risk tests, before and after surgery.MethodsClinical data of 101 consecutive patients (male = 46; female = 55; mean age, 69.3 years) who underwent surgery for lumbar spinal canal stenosis at our institute were prospectively collected. Results of physical function tests, including stand-up test, two-step test, and 25-Question Geriatric Locomotive Function Scale, and the sagittal vertical axis were evaluated before and 1 year after surgery. The association between several parameters and improvement of risk level in locomotive syndrome was evaluated.ResultsIn the total assessment, 93.1% of cases were in stage 2 and 6.9% in stage 1 preoperatively, while 72.4% were in stage 2, 22.4% in stage 1, and 5.2% in stage 0 at 1 year postoperatively. Postoperative improvement in the total assessment was observed in 28.7% of cases. Several physical function tests and sagittal vertical axis showed significant improvement after surgery. On multiple logistic regression analysis, age >75 years (odds ratio = 10.9, confidence interval = 1.09–109) and postoperative sagittal vertical axis >40 mm (odds ratio = 17.8, confidence interval = 1.78–177) were significant risk factors associated with non-improvement in risk level of locomotive syndrome.ConclusionsSurgical treatment for lumbar spinal canal stenosis improved physical function, including locomotive syndrome. Risk factors associated with non-improvement of locomotive syndrome were later-stage elderly and postoperative sagittal balance impairment.     

Protrusio acetabuli and total hip arthroplasty in patients with Marfan syndrome

Our goals were (1) to quantify protrusio acetabuli in patients with Marfan syndrome who underwent total hip arthroplasty and (2) to identify clinical results and complications associated with total hip arthroplasty in those patients. We reviewed the preoperative radiographs of the 29 patients (38 hips) in our study and analyzed the related patient operative reports, postoperative records, and self-administered questionnaires (mean follow-up, 116 ± 102 months). The mean preoperative center-edge angle of Wiberg was 50.9° ± 14°. Loosening (3) and radiolucent lines (4) occurred in femoral but not acetabular components. The hips had 15 complications, including 8 reoperations. High questionnaire scores (82 ± 13 points) indicated good hip function regardless of preoperative protrusio severity.     

Early results of total hip arthroplasty in patients with developmental dysplasia of the hip compared with patients with osteoarthritis

We have investigated the results of primary total hip arthroplasty (THA) performed in patients with developmental dysplasia of the hip (DDH). Through the New Zealand Joint Registry, we identified all patients with DDH undergoing primary THA (n = 1205) and all patients with primary osteoarthritis (OA) undergoing primary THA (n = 40 589) between January 1, 1999, and December 31, 2008. Postoperative outcomes, baseline information, and operative characteristics were analyzed and compared between the DDH and the OA groups. There was no significant difference in Oxford Hip Score or revision rate between the 2 groups. Our results support THA as a successful surgical option in the management of degenerative arthritis in DDH, with comparable functional outcomes and revision rates to THA performed for primary OA.     

C反应蛋白增高患者行全髋关节置换术后临床疗效观察

目的探讨C反应蛋白增高患者行全髋关节置换（THA）术后的临床疗效。方法选择自2005-02—2012-01符合纳入标准的23例C反应蛋白增高且衙行THA的患者进行常规THA手术,术后进行随访观察。结果本组均获得随访12～48个月．平均26．4个月。1例出现感染,但无假体松动,予行保留假体的关节清理术后症状消失。末次随访时髋关节功能Harris评分平均91．3分,其中优13例,良8例,可2例,优良率91．3％。结论严格掌握手术指征,C反应蛋白增高患者行THA术后的临床效果满意。     

Costs related to hip disease in patients eligible for total hip arthroplasty

This study was designed to estimate direct and indirect costs incurred by hip disease in patients eligible for total hip arthroplasty (THA). Before THA, 2635 patients completed a questionnaire regarding the use of resources because of their hip disease. Costs were assigned using official statistical sources or market prices. Annual costs amounted to US$ 7666 per patient. In a regression analysis, higher annual costs were associated with working age, female gender, comorbidity, and operation waiting time more than 90 days (P < .005). The burden of disease for THA candidates is extensive, where loss of productivity is the principal cost. Long wait for surgery is associated with increased costs. This study provides baseline cost data, which will be useful for further health economic analyses and could provide guidance for health care decision makers.     

Effect of total hip arthroplasty on improving locomotive syndrome in hip disease patients: A prospective cohort study focused on total clinical decision limits stage 3

BackgroundIn 2020, the Japanese Orthopaedic Association established a new stage 3 in clinical decision limits (CDL) to evaluate the stage of locomotive syndrome (LS). This study focused on total CDL stage 3 with the aim of investigating indicators related to improvements in total CDL by evaluating the improvement of LS in patients who underwent total hip arthroplasty (THA).MethodsOf the 125 patients who underwent THA at our hospital, the subjects of the analysis were 105 patients determined to be total CDL stage 3 in an evaluation performed before THA. LS was evaluated using the stand-up test, two-step test, and 25-Question Geriatric Locomotive Function Scale (GLFS-25). Indicators related to improvements in total CDL were also investigated. All evaluation items were measured before THA and three months after THA.ResultsBefore THA, all subjects (n = 105) were classified as total CDL stage 3. Three months after THA, improvements in total CDL were seen in 49 subjects (46.7%). The results of stepwise multiple logistic regression analysis showed that the before THA stand-up test and GLFS-25 were significantly related to improvements in total CDL.ConclusionsThree months after THA, improvements in LS were seen in approximately half of the subjects. The stand-up test and GLFS-25 can be used as indicators of improvement in total CDL.DesignProspective cohort study design.     

The efficacy of intra-articular analgesia after total knee arthroplasty in patients with rheumatoid arthritis and in patients with osteoarthritis

The pain relief provided by intra-articular injection of morphine plus bupivacaine after total knee arthroplasty (TKA) plus partial synovectomy in patients with rheumatoid arthritis was compared with pain relief after TKA alone in patients with osteoarthritis. There were lower pain scores, a much smaller requirement for systemic analgesics, longer duration until the first requirement of systemic analgesics, and improvement in the range of motion of the knee joint in the patients who received intra-articular injection of analgesics. There was more pronounced postoperative analgesia in the patients with rheumatoid arthritis than in the patients with osteoarthritis in the study groups that received intra-articular injection of analgesics.     

髋臼中心化的全髋关节置换术治疗髋关节发育不良型骨关节炎

目的 探讨髋臼中心化的全髋关节置换术（THA）治疗髋关节发育不良型骨关节炎的疗效.方法 62例髋关节发育不良型骨关节炎患者（68髋）行THA手术,按时间段分为两组.A组：2006年12月前的24髋按Harris常规方法处理;B组：2007年1月后的44髋采用以卵圆窝为向导的下移加深、后上挤压植骨和钉状臼嵌合的髋臼中心化手术技术处理.手术前后测量下肢短缩,进行Harris髋关节评分,用Pagnano法测量旋转中心与实际旋转中心的垂直（Y轴）和水平（X轴）距离,统计两组术中出血量和手术时间.结果 62例均获随访,时间6-24个月.下肢短缩和Harris评分：术前两组比较差异无统计学意义（P〉0.05）,术后B组优于A组（P〈0.05）.术中出血量B组较A组多（P〈0.05）,手术时间两组差异无统计学意义（P〉0.05）.X、Y轴上变化：术前两组比较差异无统计学意义（P〉0.05）,术后B组更接近真实的旋转中心,与A组比较差异有统计学意义（P〈0.05）.结论 髋臼中心化的THA治疗髋关节发育不良型骨关节炎能更好地纠正旋转中心、下肢短缩,改善髋关节功能,可获得满意的临床疗效.     

Changing incidence of primary total hip arthroplasty and total knee arthroplasty for primary osteoarthritis

This study reports on the incidence of primary total hip arthroplasty (THA) and total knee arthroplasty (TKA) for primary osteoarthritis in Australia. Age-specific and gender-specific numbers for Australia, 1994 through 1998, and South Australia, 1988 through 1998, were obtained. Incidences were calculated per 100,000 population. In Australia, primary THA increased from 50.9/10(5) (1994) to 60.9/10(5) (1998). TKA increased from 56.4/10(5) to 76.8/10(5). Stratified by age and gender, changes in incidence for South Australia with respect to time were tested using regression analysis. South Australia showed a significant increase in the overall incidence of THA (P=.012) and TKA (P<.001), although this was not uniform across all age groups. No significant gender differences were found. The incidence of THA is increasing, and the incidence of TKA is increasing at a greater rate.     

The safety and efficacy of intraoperative heparin in total hip arthroplasty

A single dose of unfractionated heparin (15 U/kg), administered intravenously before surgery on the femur suppresses thrombogenesis during total hip replacement. Nine hundred eighty-nine patients (1021 hips) who received one dose of intraoperative heparin with hypotensive epidural anesthesia were followed up prospectively for 3 months. Asymptomatic deep vein thrombosis assessed by ultrasound in the first 198 consecutive patients showed an incidence of 7.1% (14 of 198). The incidence of clinical deep vein thrombosis in the subsequent 791 patients was 0.88% (seven of 791). Symptomatic pulmonary embolism occurred in 0.5% (five of 989). No patients died and there was one major bleeding episode. Based on this favorable experience, intraoperative heparin appears safe and efficacious as thromboembolic prophylaxis.     

Leg length discrepancy and lower limb alignment after total hip arthroplasty in unilateral hip osteoarthritis patients

Background

Leg length discrepancy (LLD) following total hip arthroplasty (THA) is a leading cause of patient dissatisfaction. However, no reports have described the influence of lower limb alignment on LLD after THA. In the present study, we firstly investigated the change in lower limb alignment after THA. Secondly, we determined the influence of lower limb alignment on LLD after THA. Thirdly, we evaluated the influence of LLD in the entire lower leg on the clinical outcomes after THA.

Methods

We followed up with 54 unilateral hip osteoarthritis (OA) patients 1 year after THA. For the radiological assessment of LLD and lower limb alignment, we obtained anteroposterior radiographs of the pelvis and both lower legs in entirety in a standing position before and 1 year after THA. The Harris Hip Score (HHS), Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and Medical Outcomes Study Short-Form 36-Item Health Survey (SF-36) were also obtained to assess the clinical outcome.

Resuts

The alignment of the affected leg, which was more valgus than the unaffected leg before THA, tended toward varus after THA, and the discrepancy between the lower limb alignments on both sides decreased. However, the alignment discrepancies that remained after THA influenced the LLD measured on the radiograph of the entire lower leg, and this LLD influenced the clinical outcome as measured by the HHS and the WOMAC score.

Conclusions

LLD in the entire lower leg should be corrected for a better clinical outcome after THA.     

Early results of total hip arthroplasty in patients with slipped upper femoral epiphysis compared with patients with osteoarthritis

We have investigated the results of primary total hip arthroplasty (THA) performed in patients with slipped upper femoral epiphysis (SUFE). Through the New Zealand Joint Registry, we identified all patients with SUFE undergoing primary THA (n = 117) and all patients with primary osteoarthritis (OA) undergoing primary THA (n = 40 589) between January 1, 1999, and December 31, 2008. Baseline information, operative characteristics, and postoperative outcomes were analyzed and compared between the SUFE and the OA groups. There was no significant difference in postoperative Oxford Hip Score or revision rate between the 2 groups. Our results support THA as a successful surgical option in the management of degenerative arthritis in SUFE, with comparable functional outcomes and revision rates to THA performed for primary OA.     

全髋关节置换术治疗僵直髋的临床疗效

目的探讨僵直髋患者行全髋关节置换术(THA)的临床疗效。方法采用THA治疗16例僵直髋患者(21髋),比较手术前后髋关节被动屈曲度、Harris评分。结果患者手术均顺利完成。16例患者均获得随访,时间6个月~3年。未出现术后切口感染、脂肪栓塞、下肢静脉血栓、假体松动等并发症。末次随访时,被动屈曲度由术前0°提高至62°~96°(76.5°±8.3°)(P<0.01);Harris评分由术前14~38(27.2±2.8)分提高至67~92(84.1±6.5)分(P<0.01);髋关节功能:优8髋,良9髋,可3髋,差1髋,优良率17/21。结论THA治疗僵直髋,能够减轻髋关节疼痛,增加髋关节活动度,改善髋关节功能,提高患者的生活质量。术前的充分准备及丰富的手术经验是手术成功的关键。     

Outcome of the contralateral hip following total hip arthroplasty for osteoarthritis

One thousand one hundred and sixteen patients who underwent unilateral total hip arthroplasty osteoarthritis between 1970 and 1980 were examined for development, progression, and total hip arthroplasty in the contralateral joint. At the time of the original surgery, 452 patients were diagnosed with bilateral osteoarthritis and 664 had a normal contralateral hip. The probability of osteoarthritis progressing in the contralateral joint is 78.6% at 10 years, with the chance of arthroplasty being 53.8%. The probability of a hip diagnosed as normal developing osteoarthritis is 36.5% at 10 years, with an 8.3% chance of requiring total hip arthroplasty.     

全髋关节置换术后下肢不等长对功能和步态的影响

目的探讨全髋关节置换术后下肢不等长与患者功能和步态的关系。方法2008年6月至2009年6月行初次单侧全髋关节置换术的患者62例（其中男28例,女34例）,平均年龄67岁。术后拍摄骨盆正位x线片,测量出双下肢长度差。术后6个月对患者随访,用Harris髋关节功能评分（HHS）评估患者术后功能及步态分析。结果（1）下肢长度：下肢等长者16例。下肢长度术后患肢延长46例,其中延长1-10mm者28例（下肢延长A组）,平均5．3mm;延长11～20mm者18例（下肢延长B组）,平均15．7mm。（2）髋关节HHS评分：下肢延长A和B组之间HHS评分的差异无统计学意义（t=1．5,P〉0．05）,下肢延长B组HHS评分低于等长组（t=2．6,P〈0．05）;（3）步态分析：在步长、单腿支撑时间以及Footoff方面,下肢延长B组与等长组之间存在统计学差异（t=2．6,t=3．2,t=2．8;P〈0．05）,下肢延长A组和等长组之间无统计学差异（t=1．6,t=1．2,t=1．5;P〉0．05）。结论全髋关节置换术后肢体延长时,髋关节步态参数明显改变。当患肢延长超过10mm后,对髋关节功能和步态有一定影响。     

髋关节骨性关节炎患者经髋关节置换术后发生股骨假体冠状面角度误差的原因分析

目的：分析髋关节骨性关节炎患者经全髋关节置换术（THA）后发生股骨假体冠状面角度误差的原因。方法：收集2017年3月—2022年2月于我院诊疗的髋关节骨性关节炎且行THA治疗的122例患者为研究对象。在PACS系统上通过Image-Pro Plus软件测量患者术前和术后的股骨假体外翻角（FPVA）、股骨侧弯角、股骨机械轴外侧角、股骨颈干角、股骨颈长度。依据术后6个月全长片冠状面FPVA分为2组：当FPVA>3°或<-3°时,纳入力线不良组（89例）,余33例纳入力线良好组。比较两组患者的一般临床资料及影像学参数。使用多元Logistic回归分析冠状面上预测假体角度误差的影响因素。构建Nomogram预测模型,并对模型进行验证。使用Spearman相关分析FPVA与其他因素间的相关性。结果：股骨机械轴外侧角、股骨颈干角、股骨颈长度和股骨侧弯角均是骨关节炎患者经THA术后发生假体角度误差的影响因素（P <0.05）。冠状面上构建的预测假体角度误差的Nomogram模型的区分度和内部验证结果均较好。FPVA与股骨侧弯角（r=-0.381,P <0.001）、股骨机械轴...