陈旧性胫骨平台骨折畸形愈合髌骨反转移植修复平台关节面的初步研究

陈旧性胫骨平台骨折畸形愈合属于创伤骨科治疗难题,本研究首次采用髌骨取骨反转移植的方式治疗陈旧性胫骨平台骨折畸形愈合的患者1例,术中钻取髌骨中央关节面,规格为高22 mm、直径15 mm的圆柱体,将包含有关节面的圆柱体以关节面朝向股骨内髁的方式植入,髌骨残腔取髂骨填塞,术后影像学检查及临床效果满意。     

经皮解剖型锁定钢板治疗胫骨远端骨折

目的探讨经皮解剖型锁定钢板治疗胫骨远端骨折临床疗效。方法2007年12月-2010年6月对18例胫骨远端骨折患者进行经皮内侧解剖型锁定钢板治疗,以临床功能评定治疗效果。结果18例获随访,时间3-16个月,骨折均愈合,无植入物松动、断裂。按Tohner-wruhs方法评价,优10例,良6例,中2例。结论应用胫骨远端内侧解剖型锁定钢板经皮固定治疗胫骨远端粉碎性骨折,创伤小,固定可靠,有利于患者早期功能锻炼,疗效满意,是治疗胫骨远端骨折的理想方法。     

关节镜下治疗胫骨平台骨折的体会

目的探讨关节镜下胫骨平台骨折复位、钢板内固定治疗胫骨平台骨折的临床疗效。方法 27例胫骨平台骨折患者在关节镜下进行骨折复位内固定术。结果术后无切口愈合不良、感染、骨筋膜间室综合征等早期并发症发生。患者均获随访,时间12～39个月。骨折愈合时间3～4.5个月。随访期内无内固定物失效、创伤性关节炎和膝内、外翻畸形发生。采用Lysholm评分标准评价临床疗效:优21例,良4例,可2例。结论关节镜下治疗胫骨平台骨折,损伤小,操作安全,复位固定满意,能一期准确判断关节内结构的损伤并予修复,术后功能恢复快。     

双侧锁定钢板治疗胫骨平台粉碎骨折

目的 探讨双侧锁定钢板治疗胫骨平台粉碎骨折的方法和疗效.方法对22例胫骨平台粉碎骨折患者行双侧锁定钢板内固定治疗.结果 22例均获随访,时间8～25个月.骨折均愈合,愈合时间6～16个月.膝关节功能按Iowa评分标准评定：优17例,良4例,可1例.结论 采用双侧锁定钢板治疗胫骨平台粉碎骨折固定牢靠,创伤小,并发症少,可早期功能锻炼,膝关节功能恢复良好,疗效满意.     

旋入式髓内针治疗胫骨骨折

2010年8月～2011年12月,我院采用旋入式髓内针治疗30例胫骨骨折伴胫前软组织损伤患者,取得满意的疗效,报道如下。1材料与方法1.1病例资料本组30例,男19例,女11例,年龄22～55岁。     

注射式磷酸钙骨水泥在胫骨平台骨折中的应用

目的采用回顾性分析方法,对注射式β-磷酸三钙骨水泥作为植骨材料在胫骨平台骨折中的临床疗效进行评估。方法对23例胫骨平台骨折复位后骨缺损区采用可注射式磷酸钙骨水泥进行填充。结果全部病例平均随访15.4个月,均获得骨性愈合,无骨不连和感染情况发生,内固定无松动及脱落现象。注射式β-磷酸三钙骨水泥术后10～12周开始出现吸收,20～24周大部分吸收,28～32周基本全部吸收。术后6个月和1年膝关节功能良好。结论注射式β-磷酸三钙骨水泥具有安全、方便、副作用小、填充效果确实等优点。固化后具有较强的支撑作用,可提高患者膝关节早期功能锻炼的安全性,促进了骨折的愈合过程,是治疗和填充胫骨骨折骨缺损区的较佳方法之一。     

A Safe Overhang Limit for Unicompartmental Knee Arthroplasties Based on Medial Collateral Ligament Strains : An In Vitro Study

Excessive tibial component overhang during unicompartmental knee arthroplasty (UKA) may cause medial collateral ligament (MCL) impingement, which, in turn, may lead to medial knee pain [Chau et al. Tibial component overhang 226 following unicompartmental knee replacement—does it matter? The Knee. 2009;16(5):310-3]. This study examines MCL loads in 6 human cadaveric knees for different levels of overhang using a robotic testing system. The results indicated no statistically significant difference between the baseline MCL load (no overhang) and the 2-mm overhang (P = .261). However, there were significant differences in MCL load between 2- vs 4-mm (P = .012) and 2- vs 6-mm overhang (P = .022). The loads were almost doubled from 2 to 4 mm of overhang. We conclude that, to minimize pain from excessive MCL loading, surgeons should avoid tibial component overhang greater than 2 mm in unicompartmental knee arthroplasties.     

Comparison of High Tibial Osteotomy and Unicompartmental Knee Arthroplasty in the Treatment of Unicompartmental Osteoarthritis : A Meta-Analysis

We conducted a systematic review of comparative clinical trials assessing the results of high tibial osteotomy (HTO) and unicompartmental knee arthroplasty (UKA) in patients with strictly unilateral osteoarthritis of the knee. A literature search was conducted through Medline, Embase and Cochrane library. A total of 11 comparative studies were included. Pooled results showed: UKA showed significantly better results compared to HTO in terms of function results, however, no difference in specific knee score was observed; HTO got slightly better results of the range of motion; a trend towards an increased velocity was found in UKA without significant difference. Postoperative rate of revision and complications did not differ significantly between two groups. With the correct patient selection, both HTO and UKA show effective and reliable results.     

Computed Tomography Morphometric Study of Gender Differences in Osteoarthritis Proximal Tibias

One hundred and thirty osteoarthritic knees(65 males, 65 females) from a Chinese population were measured by computed tomography for tibial mediolateral (ML), middle anteroposterior (AP), medial anteroposterior (MAP), lateral anteroposterior (LAP) dimensions and ML/AP aspect ratio. The ML/AP aspect ratio were classified into 3 groups based on AP dimensions(< 48 mm, 48–52 mm, > 52 mm) to compare the morphologic differences of proximal tibia between males and females. The mean ML, AP, MAP and LAP dimensions of proximal tibia showed significant differences for sex (P < .01). We found a progressively decreased in the ML/AP aspect ratio with an increasing AP dimension, and males have larger ML/AP aspect ratio than that of females under a given AP dimension (P < .01). This indicates that under a given AP dimension prosthesis, the tibial ML dimension have the potential to be undersized in males and to overhang in females. This study may provide important reference in designing proper gender-specific tibia prosthesis with different ML/AP aspect ratio for Chinese males and females.     

Retrospective Evaluation of the Duracon Periapatite-Coated Tibial Tray : Midterm Results and Factors Affecting Success

This study reports the retrospective radiographic outcome of a series of 63 consecutive total knee arthroplasties using an uncemented hydroxyapatite-coated Duracon cruciate-retaining tibial baseplate (Stryker Howmedica Osteonics Corp, Mahwah, NJ). Sixty-three knees were assessed at a mean follow-up of 65 months. The knees were primarily diagnosed with osteoarthritis with a mean age of 61 years. Radiographic analysis showed 6 knees with tibial baseplate radiolucencies, with all of these resolving or improving over the course of the study. All tibial baseplates were implanted with the concomitant use of autologous bone slurry. There were no reoperations for aseptic loosening, fracture, or patellofemoral problems. This intermediate study demonstrates excellent radiographic outcomes for uncemented hydroxyapatite-coated Duracon cruciate-retaining tibial baseplates and evaluates other factors felt to be important in the success of a cementless implant.