Complications Associated With Medial Opening-Wedge High Tibial Osteotomy Using a Locking Plate: A Multicenter Study

Background

The aim of this study is to investigate complications following medial opening-wedge high tibial osteotomy using a locking plate. In addition, we aimed to compare postoperative outcomes between the complicated and the uncomplicated group.

微创经皮接骨板技术治疗胫骨骨折

目的：经皮微创内固定（minimally invasive percutaneou plate osteosynthesis,MIPPO）结合普通国产DCP钢板治疗胫骨干骨折31例的临床疗效,并探讨胫骨干骺端骨折27例的经皮接骨板技术的临床疗效。方法：回顾性分析了2002年7月-2004年7月收治的85例胫骨干骨折临床治疗的随访结果,并前瞻性研究2004年7月。2005年1月胫骨干骺端骨折54例的经皮接骨板技术的临床疗效。胫骨干骨折85例随访82例,随访时间1．5-4年,平均随访2年。胫骨干骺端骨折全部随访10月。2．5年,平均1．5年。结果：胫骨干82例均愈合,术后疼痛轻,无感染,无延迟愈合及骨不连的病例,胫骨干骺端骨折治疗54例伤口无感染,骨折均愈合,功能恢复良好。结论：对于胫骨干骨折,经皮微创固定结合普通国产DCP钢板与带锁髓内钉具有相似的结果。对于胫骨干骺端骨折,经皮微创内固定结合普通国产解剖钢板具有创伤小,局部组织干扰较小,骨折愈合快,功能恢复好的特点。     

微创经皮钢板接骨术治疗胫骨骨折

目的 评价经皮微创钢板接骨术治疗胫骨骨折的临床疗效。方法 运用此技术治疗胫骨骨折54例。于胫骨内侧建立皮下隧道,经此隧道将钢板穿置在胫骨内侧骨膜上,骨折间接复位,低密度螺钉予以固定。结果 全部病例获随访,时间12～26个月,平均18个月,骨折愈合时间10～16周,平均12周,无骨折延迟愈合及不愈合,无感染及内固定失败等并发症。结论 微创经皮钢板接骨术符合生物学固定原则,有利于骨折的愈合。     

经皮微创内侧锁定板固定治疗胫骨下段骨折

目的观察经皮微创钢板固定（minimally invasive percutaneous plate osteosynthesis,MIPPO）技术治疗胫骨下段骨折的临床疗效。方法对2009年1月至2011年2月收治的29例胫骨下段骨折病例采用MIPPO技术结合锁定加压接骨板（locking compression plate,LCP）治疗,其中男23例,女6例;年龄20~71岁,平均47.7岁。对临床疗效进行回顾性分析。结果其中26例获得随访,时间12~24个月,平均14个月。1例软组织感染,骨折均愈合,愈合时间3~6个月,平均4.2个月。按Johner-Wruhs评分标准评定疗效,其中优23例,良2例,可1例,优良率为96.2%。结论采用MIPPO技术结合LCP治疗胫骨下段骨折,具有创伤小、手术时间短、骨折愈合率高、功能好的优点,是治疗胫骨下段骨折的理想方法。但需重视小腿内侧软组织条件,严格掌握适应证,避免软组织并发症。     

胫骨高位截骨术治疗膝关节骨关节炎的长期随访

目的 :为了观察胫骨高位截骨术治疗膝关节骨关节炎的远期治疗效果。方法 :作者随访了 1988～ 1997年10年间在新加坡中央医院行胫骨高位截骨术的 438名 (486膝 )膝关节骨关节炎的患者。结果 :手术后 5年内的优良率为 88.5 % ,手术后 5～ 10年的优良率为 6 1.9%。但在手术后仍有 18.9%的患者因治疗效果的下降须再次手术置换人工膝关节。结论 :我们认为胫骨高位截骨术虽然是治疗膝关节骨关节炎的一种有效手段 ,但远期仍有一部分患者因治疗效果下降须再次手术。     

Medial Unicompartmental Knee Arthroplasty After Failed Open-Wedge High Tibial Osteotomy

BackgroundControversy exists whether or not a previous high tibial osteotomy (HTO) influences the outcome and survival of a unicompartmental knee arthroplasty (UKA). The aim of this retrospective study was to evaluate clinical, radiological, and functional outcomes of UKA after failed open-wedge HTO compared with UKA with no previous HTO.MethodsBetween 2001 and 2017, 24 post-HTO UKAs (group A) with an average follow-up of 8.1 years (range: 5 to 13) were compared with a control group of 30 patients undergoing simple UKA (group B) with an average follow-up of 9.5 years (range: 2 to 16). All patients were evaluated preoperatively and postoperatively using Knee Society Score, University of California at Los Angeles Activity Score, Western Ontario and McMaster University Osteoarthritis Index, and through objective evaluation. Mechanical coronal alignment and Caton-Deschamps index were measured both preoperatively and postoperatively.ResultsIn both groups, Knee Society Score, University of California at Los Angeles Activity Score, and Western Ontario and McMaster University Osteoarthritis Index scores significantly improved at follow-up (P < .001). In addition, statistically significant greater improvements in clinical and functional scores were reported in group B compared with group A (P < .001). No statistically significant differences concerning postoperative mechanical axis were observed between groups (2.7° and 3.2°, respectively, P = .27) and with regard to Caton-Deschamps index (1.0° and 1.1°, respectively, P = .44).ConclusionThis study demonstrated improvements in clinical and functional outcomes compared with preoperatory status in both groups irrespective of a previous HTO. A prior HTO was a determinant for having reduced postoperative clinical and functional outcomes after UKA.     

High Tibial Osteotomy with Overcorrection of Varus Malalignment in Medial Gonarthrosis

Seventy-eight knee joints with varus malalignment were examined pre-operatively using three-point measurement. Operation was performed with or without 5° overcorrection of the varus deformity using random selection. the overcorrection group showed significantly better results than the normal-correction group.     

A New Preoperative Planning Technique Can Reduce Radiation Exposure During the Performance of Medial Opening-Wedge High Tibial Osteotomy

Background

Medial opening-wedge high tibial osteotomy (HTO) is one of the most common and effective HTO techniques, in which the proximal tibia is cut medially, leaving an intact lateral hinge of bone that can be opened to a variable amount for the desired correction, but the technical complications of lateral cortex fracture and intra-articular fracture are well described. The lateral bone hinge for medial opening-wedge HTO is crucial. If the hinge is too small, the tibia can fracture and become unstable, requiring further fixation. If the hinge is too large, the osteotomy can propagate into the joint as an intra-articular fracture when opening the osteotomy.

Purpose

We propose a new technique that utilizes digital preoperative templating to improve the accuracy of the cut. Preoperative digital templating may allow the surgeon to reproducibly obtain a lateral bone hinge of 10 mm, while also reducing radiation exposure relative to the traditional fluoroscopically assisted technique.

Methods

Ten cadaver extremities from five cadavers were matched into pairs and randomized into two groups: those with and without preoperative templating. The templating protocol measures the distance between two points on the medial and lateral cortices, and 20 mm is subtracted to determine the depth of the saw cut (10 mm for the hinge and another 10 mm because the proximal tibia is oval in shape). The control method was done by making the cut using fluoroscopy with tactile feedback. Postoperative computed tomography scans were obtained of all legs to measure the width of the lateral bone hinge. Intraoperative fluoroscopy used during both techniques and the numbers of fluoroscopy shots were recorded.

Results

We found neither the treatment group with preoperative planning nor the control group with the conventional technique had bone hinge widths that were different from the ideal 10 mm. The average hinge widths for the treatment and control groups were 11.2 and 11.5 mm, respectively. However, the treatment group was exposed to significantly less intraoperative fluoroscopy during the osteotomy cut. The average total number of fluoroscopy shots was 2.2 in the treatment group versus 6.3 for the control group.

Conclusions

This new preoperative planning technique achieves similar accuracy of the lateral bone hinge when compared to current methods but exposes the patient, surgeon, and staff to significantly less intraoperative radiation.

     

Patient Expectations and Satisfaction After Medial Opening Wedge High Tibial Osteotomy

BackgroundThe objective of this study is to assess preoperative patient expectations of medial opening wedge high tibial osteotomy (MOWHTO) and related postoperative fulfillment, to increase understanding of associated factors of postoperative satisfaction.MethodsOne hundred fifteen patients who underwent MOWHTO were enrolled. Patients’ expectations were measured using the Hospital for Special Surgery-Knee Replacement Expectations Survey. Fulfillment of expectations and satisfaction was evaluated using the Hospital for Special Surgery Knee Replacement Fulfillment of Expectations Survey and a 5-point Likert scale at 2 years, postoperatively. The discrepancies between preoperative expectation and postoperative fulfillment score were also assessed. Preoperative and postoperative patient-reported outcomes were evaluated using Western Ontario and McMaster Universities Arthritis Index (WOMAC) score. Univariate and multivariate analyses were performed to model predictions for satisfaction.ResultsThe most expected items were “pain relief,” “walking ability,” and “perform daily activities.” The top 3 items with the biggest discrepancies between expectation and fulfillment scores were “kneeling,” “squatting,” and “pain relief.” Ninety patients (78.3%) were satisfied and 25 (21.7%) were dissatisfied at 2 years postoperative. Multivariate logistic regressions showed that patient expectations did not affect satisfaction. Small discrepancies between expectation and fulfillment scores (odds ratio [OR] 105.304, 95% confidence interval 20.974-528.714, P < .001), high postoperative fulfillment scores (OR 1.198, 95% CI 1.110-1.293, P < .001), and low postoperative Western Ontario and McMaster Universities Arthritis Index total scores (OR 0.932, 95% CI 0.894-0.971, P < .001) were significantly associated with patient satisfaction.ConclusionThe small discrepancy between preoperative expectations and postoperative fulfillment of expectations was a major contributor to patients’ satisfaction following MOWHTO.     

胫骨高位截骨治疗膝内侧间室严重骨性关节炎

目的：应用胫骨高位截骨术治疗膝内侧间室严重性关节炎并膝内翻畸形以缓解或消除关节疼痛,矫正畸形,恢复关节正常的生物力线排列。方法：自1992年5月－1998年2月应用胫骨高位截骨共施行手术18例（21膝）,要求术前按适应证严格筛选病人,计算截骨角度。结果：本组病人平均随访3．2年,按Coventry疗效评定,优10例,良7例,可3例,差1例。结论：此手术可恢复内侧间室关节间隙下肢正常生物力线,有利于退变软骨的恢复,疗效满意。     

微创经皮锁定加压钢板内固定治疗胫骨远端骨折

目的探讨微创经皮锁定加压钢板内固定治疗胫骨远端骨折的效果。方法自2003年6月～2005年5月微创经皮锁定加压钢板内固定治疗胫骨远端骨折56例。按AO分类标准:A型20例,B型19例,C型17例。结果48例获得随访,平均11个月(8～21个月)。X线片显示骨折全部一期愈合,平均愈合时间为13周,均无感染、骨不连、钢板松动等并发症。按照Mazur踝关节功能评分:优38例,良6例,可4例,优良率为91.7%。结论微创经皮锁定加压钢板内固定治疗胫骨远端骨折符合生物力学固定(BO)原则,内固定牢靠,有利于骨折的愈合及软组织的修复。     

改良内侧开放式胫骨高位截骨术治疗膝内侧间室骨性关节炎

目的探索新型改良内侧开放式胫骨高位截骨术(High tibial osteotomy,HTO)治疗膝内侧间室骨性关节炎的有效性和安全性。方法选择2017年7月到2018年7月在我院接受改良内侧开放式HTO的60位膝内侧间室骨性关节炎患者作为研究对象。记录每位患者的手术时间、出血量及手术并发症,并分别于术前和术后3、6个月对患者进行疼痛视觉评分(VAS)和美国膝关节协会评分(KSS评分);比较患者手术前后的胫股角、平台后倾角的影像学治疗。结果术后3、6个月的VAS评分和KSS评分均优于术前(P<0.001),且术后随着时间推移评分存在逐渐好转趋势。患者术后胫股角较术前胫股角减小(P<0.005),术后胫骨后倾角与术前无明显差异(P>0.05)。结论改良内侧开放式HTO治疗膝内侧间室骨性关节炎可显著缓解疼痛症状,重建膝关节功能。