单隧道双束腘绳肌腱双Intrafix固定重建前交叉韧带近期疗效观察

目的 探讨单隧道双束腘绳肌腱双Intrafix固定重建前交叉韧带(ACL)中应用的可行性及近期疗效.方法 对30例ACL损伤患者行关节镜下单隧道双束腘绳肌腱ACL重建术.采用膝关节镜前内侧入路(AM)建立股骨隧道,胫骨端用点对点ACL瞄准器建立隧道.隧道股骨端采用Femoral-Intrafix固定将腘绳肌腱分为前内侧束及后外侧束.通过旋转胫骨端移植物,将移植物调整为生理的双束位置,采用Bio-Intrafix固定胫骨端.结果 30例均获随访,时间6～8个月.根据Lysholm膝关节功能评分:术前为19～58(33.17±11.71)分;术后6个月为88～98(95.30±2.10)分(t=30.20,P<0.01).结论 单隧道双束腘绳肌腱双Intrafix固定重建ACL,手术操作简便,固定牢固,近期效果满意.     

双束双隧道6股腘绳肌腱解剖重建前交叉韧带

目的探讨双束双隧道6股腘绳肌腱重建前交叉韧带（ACL）的可行性及近期疗效。方法对28例ACL损伤患者行关节镜下ACL重建术。采用股骨胫骨双隧道建立前内侧束（AMB）及后外侧束（PLB）。分别将股薄肌腱、半腱肌腱编织成3股肌腱,用于重建PLB与AMB。AMB与PLB股骨端均用Endobutton钢板固定,胫骨端AMB用Bio-Intrafix固定,PLB用Milagro可吸收界面螺钉固定。结果 28例均获随访,时间12-24（19.54±3.84）个月。根据Lysholm膝关节功能评分：术前为18-60（34.79±12.53）分,术后1年为90-98（95.54±2.06）分,差异有统计学意议（t=26.51,P〈0.01）。结论双束双隧道6股腘绳肌腱重建ACL,手术操作简便,固定牢固,效果可靠。     

关节镜下股骨单隧道与双隧道重建后十字韧带的疗效分析

目的分析比较关节镜下单束单隧道与双束股骨双隧道重建后十字韧带(PCL)术后的临床效果。方法1999年1月～2001年12月,采用单束前外束重建法重建PCL 18例,男14例,女4例;年龄18～50岁,平均35.5岁;右膝12例,左膝6例。移植物为骨-髌腱(中1/3)-骨的11例,半腱肌腱和股薄肌腱的7例。于PCL股骨附着点解剖中心的稍前方钻取股骨隧道,屈膝70°,拉紧并固定移植物。2000年1月～2002年12月,采用双束股骨双隧道法重建PCL12例,男10例,女2例;年龄21～47岁,平均33岁;右膝9例,左膝3例。移植物为半腱肌腱和股薄肌腱的7例,一端带髌骨块的股四头肌肌腱的5例。将肌腱编织分为两束。于股骨侧钻取双隧道。两束分别于屈膝70°和0°时拉紧并固定。结果采用前外束重建法的18例患者平均随访23个月,采用双束股骨双隧道重建法的12例患者平均随访17个月。前外束重建组与双束股骨双隧道重建组随访时的Lysholm评分分别为(92.4±3.7)分和(94.3±3.4)分,两组间差异无显著性(P>0.05)。屈膝0°和30°时,前外束重建组的胫骨后移距离是(5.9±0.4)mm和(6.2±0.5)mm,双束股骨双隧道重建组是(3.5±0.3)mm和(4.0±0.4)mm,两组间差异有显著性(P<0.05);屈膝60°和90°时,两组胫骨后移距离差异无显著性(P>0.05)。结论双束股骨双隧道重建PCL的方法优于前外     

单隧道双束腘绳肌腱双Intrafix固定重建后交叉韧带

目的 探讨单隧道双束腘绳肌腱双Intrafix固定在重建后交叉韧带(PCL)中应用的可行性及近期疗效.方法 对16例PCL损伤患者行关节镜下单隧道双束腘绳肌腱双Intrafix PCL重建术.采用膝关节镜前内入路(AM)建立股骨隧道,胫骨端用PCL瞄准器建立隧道.股骨端采用Femoral-Intrafix固定,将腘绳肌腱分为前外侧束及后内侧束.通过旋转胫骨端移植物,将移植物调整为生理的双束位置,采用Bio-Intrafix固定胫骨端.结果 16例均获随访,时间8～14(11.81 ±1.91)个月.未见滑膜炎、韧带断裂等并发症发生.根据Lysholm 膝关节功能评分:术前为20 ～47(32.63±8.03)分,术后8个月为85 ～97(91.44 ±3.72)分,差异有统计学意义(t=44.20,P＜0.01).结论 单隧道双束腘绳肌腱双Intrafix固定重建PCL,手术操作简便,固定牢固,近期效果满意.     

同种异体骨-髌腱-骨重建前交叉韧带术后骨隧道扩大的分析

目的 探讨同种异体骨-髌腱-骨(B-PT-B)重建前交叉韧带(ACL)术后股骨和胫骨的骨隧道的改变及其对临床疗效的影响.方法 2004年1月～2005年12月对30例ACL断裂患者在关节镜监视下应用同种异体B-PT-B单束重建ACL.术后膝关节功能锻炼采用保守的康复训练方案.分别于术后1周和12个月应用磁共振测量股骨和胫骨骨隧道关节面内口的直径.术后12个月以Lysholm评分观测膝关节功能,应用KT-1000测量膝关节屈30°时的胫骨相对活动度. 结果本组30例ACL重建患者术后33%(10/30)的患者出现股骨和(或)胫骨骨隧道扩大,其中69%(11/16)的骨隧道扩大范围在2～6 mm;骨隧道扩大各级别之间的Lysholn疗效评分、术后KT值差异无统计学意义(P＞0.05).结论 同种异体B-PT-B移植重建ACL术后骨隧道可有不同程度的扩大;骨隧道扩大小于6 mm时,对膝关节的功能恢复无明显影响.     

前十字韧带重建术骨隧道区的骨密度测量

 目的 比较前十字韧带（anterior cruciate ligament,ACL）重建术股骨侧与胫骨侧骨隧道区域的骨密度,为选择界面螺钉大小提供参考。方 法 招募30名年龄18~35岁的健康志愿者,用双能X线吸收（Dual-energy X-ray absorptiometry,DEXA）骨密度仪进行右下肢股骨侧与胫骨侧骨隧道区域骨密度 测量;以CT薄层扫描右侧膝关节,利用三维立体成像技术分别确定经过骨隧道中心轴的股骨与胫骨隧道截面并测量灰度值。2010年8至10月ACL撕裂确诊患者9例 ,在重建手术过程中完整取出股骨侧与胫骨侧骨隧道内松质骨柱,应用阿基米德原理测量体积骨密度。结果 DEXA测量股骨侧隧道区域骨密度为（1.162±0.034 ） g/cm2,胫骨侧为（0.814±0.038） g/cm2,两者差异有统计学意义（t=9.11,P=0.000）;骨隧道区域CT股骨侧灰度值为（211.7±11.5） Hu,胫骨侧为 （104.9±7.4） Hu,两者差异有统计学意义（t=10.15,P=0.000）;股骨侧骨柱体积骨密度为（2.80±0.88） g/cm3,胫骨侧骨柱为（1.88±0.59） g/cm3, 两者差异有统计学意义（t=4.32,P=0.002）。结论 ACL重建术股骨侧隧道松质骨密度大于胫骨侧。     

腘绳肌腱结嵌入固定结合双监视法解剖等长技术重建前交叉韧带

目的探讨在关节镜下采用腘绳肌腱结嵌入固定结合双监视法解剖等长技术重建前交叉韧带(ACL)的可行性及近期疗效。方法对10例ACL损伤采用自体半腱肌、股薄肌腱中间打结,股骨端嵌入挤压固定法镜下重建ACL。半腱肌腱和股薄肌腱预张力后,肌腱中间打结,测量结与肌腱的直径,备用。用双监视法解剖等长技术,建立股骨胫骨端等长点,胫骨端用肌腱相同直径的钻头建立胫骨隧道。股骨端用自制的台阶样联合钻建立隧道。股骨隧道下30mm的直径为6～8mm,股骨隧道近端为11～12mm。将肌腱从股骨隧道的近端经关节腔牵入胫骨隧道,将肌腱拉紧、膝关节屈伸活动20次,使肌腱结完全嵌入瓶颈状股骨隧道内。将4股肌腱从胫骨隧道和其下方10mm处分别穿出,交叉打结并缝合固定在骨桥上。结果10例随访5～12个月,平均9个月。根据Lysholm膝关节功能评分,术前评分:20～45分,(29.80±12.79)分;术后半年评分:81～91分,(86.80±3.46)分(t=20.93,P<0.01)。结论腘绳肌腱结嵌入固定结合双监视法解剖等长技术重建ACL具有定位准确、手术操作简单、韧带等长重建、生物固定、不用内固定耗材、节约手术费用、疗效确切等优点,值得临床推广应用,尤其适用于广大部队伤病员。     

经前交叉韧带腋下胫骨定位的后交叉韧带重建术

[目的]介绍关节镜下经前交叉韧带(anterior cruciate ligament, ACL)腋下胫骨定位的后交叉韧带(posterior cruciate ligament, PCL)重建术的技术及初步疗效。[方法] 2016年3月～2018年11月,对20例后交叉韧带断裂患者采用关节镜下经ACL腋下定位胫骨骨道,保残重建后交叉韧带。术中保留PCL残束,经前入路由内向外建立PCL股骨隧道,经ACL腋下置入胫骨隧道定位器,在后内入口观察下,于PCL止点平台下建立胫骨隧道。将移植腱由胫骨前侧经胫骨隧道拉入、再引入股骨隧道,股骨侧悬吊固定,拉紧移植物,胫骨侧挤压螺钉和"n"形钉固定。[结果]所有患者均顺利手术,无严重并发症。随访1年以上,Lysholm评分从术前(38.75±14.52)分显著增加至术后1年(93.70±4.23)分(P0.05)。影像测量后向应力胫骨后移由术前(10.81±3.07) mm减少至术后1年(3.86±1.10) mm (P0.05)。[结论]经ACL腋下定位胫骨骨道重建PCL,能精确的偏下偏外定位胫骨骨道;并可以最大程度的保留PCL残端,有利于重建术后韧带的愈合。     

双源三维CT重建前交叉韧带股骨止点的印迹技术

目的 探讨双源CT(DSCT)三维重建前交叉韧带(ACL)股骨止点的印迹技术,尝试建立适用于关节镜下ACL解剖双束重建定位及测量系统,为临床实现个体化重建提供解剖学依据.方法 30名志愿者,对其双膝关节进行DSCT扫描,64排工作站(GE,Volume Share2-AW4.4版本软件)三维重建膝关节股骨外髁内侧壁三维模型,观察、圈画、标定ACL股骨止点双束印迹,定位股骨远端与股骨外髁滑车相交点O点；尝试测量ACL印迹长、短轴,两束中心点距离与股骨干之间夹角,双束中心点距离及印迹边缘至股骨髁软骨缘的距离等. 结果 采用DSCT技术再现的ACL股骨止点印迹为一凸起、平坦、形态不规则、灰度一致但与周围不同的区域；在股骨外髁三维模型上,成功建立了适用于关节镜下ACL解剖双束重建的“三点两角”定位系统.印迹长轴平均为(16.5±1.8) mm,印迹短轴平均为(8.0±1.3)mm,印迹角度平均为8 3°±4.9°,双束中心点距离平均为(7.8±1.0) mm,印迹边缘至股骨软骨远端最近距离平均为(1.6±1.5) mm,印迹边缘至股骨软骨后缘最近距离平均为(1.7±0.9)mm. 结论 采用DSCT三维重建技术可清晰重建ACL股骨印迹；ACL股骨止点自然印迹形态、位置存在个体化差异,“三点两角”定位法更适用于关节镜下定位,实现ACL解剖个体化重建.     

双源CT三维重建评价前交叉韧带骨道位置的临床研究

目的 探讨双源CT三维重建前交叉韧带（ACL）股骨止点自然印迹与骨道中心点相对位置关系.方法 分别对55例志愿者110个膝关节和30例双束重建患者30个患膝关节进行双源CT扫描.使用CT图像后处理工作站行三维重建膝关节股骨外髁内侧壁三维模型,再现股骨外髁内侧壁ACL自然印迹及术后双束骨道,标记、测量自然印迹及骨道中心点相对位置,比较两者的位置关系,显著性差异设定P值0.05.结果 ACL自然印迹中心点相对位置与术后双束骨道中心点相对位置比较：前内束,h对=（26.2±2.2）%,h实=（23.6±8.5）%,中心点相对位置比较有统计学差异（t=4.906,P〈0.01）;t对=（25.0±2.1）%,t实=（25.2±3.9）%,中心点相对位置比较无统计学差异（t=0.480,P〉0.05）.后外束,h对=（46.5±3.2）%,h实=（45.0±4.6）%,中心点相对位置比较无统计学差异（t=0.608,P〉0.05）;t对=（34.2±2.5）%,t实=（37.9±4.2）%,中心点相对位置比较无统计学差异（t=0.530,P〉0.05）.结论 （1） DSCT三维重建可清晰重建出ACL股骨止点自然印迹和双束重建术后骨道位置;（2） DSCT 三维重建可用于ACL解剖双束重建术后骨道位置评估,对改进关节镜下ACL解剖双束重建有指导意义.     

腘绳肌腱结合双固定技术重建前交叉韧带

目的探讨采用腘绳肌腱股骨端胫骨端双固定技术重建前交叉韧带(ACL)的可行性及近期疗效。方法对25例ACL损伤行关节镜下ACL重建术,采用笔者自行设计双监视法解剖等长重建技术建立股骨胫骨隧道。移植物股骨端用Endobutton钢板和Rigidfix固定,胫骨端用Bio-Intrafix和Stample门形加压钉固定。结果本组获随访12～18(13.76±1.61)个月,未发现滑膜炎、韧带断裂、活动度明显障碍等并发症。根据Lysholm膝关节功能评分,术前评分:20～48(31.32±8.71)分;术后1年评分:90～98(94.96±2.56)分(t=37.69,P<0.01)。结论在腘绳肌腱重建ACL中应用股骨端胫骨端双固定技术具有手术操作简便,固定牢固,效果可靠的优点,值得推广。     

Trantibial anterior cruciate ligament double bundle reconstruction technique: two tibial bundle in one tibial tunnel

The anterior cruciate ligament (ACL) consists of two functional bundles that behave independently throughout the range of knee motion. Many two-bundle reconstruction techniques have been introduced to restore the function of the two bundles of the ACL. Generally, two femoral and two tibial tunnels are made during the surgery for a two-bundle ACL reconstruction. However, the procedure is technically demanding and time consuming. This paper describes one-tibial-two-femoral ACL double bundle reconstruction technique with a sextuple-stranded hamstring autograft. The anteromedial femoral tunnel is made using transtibial drilling technique and posterolateral femoral tunnel is made using outside-in technique. The two bundles in a single tibial tunnel are separated using biodegradable interference screw. Stable and adequate femoral fixation of the two bundles with a transtibial fixation and bioabsorbable screw can be obtained. This technique is relatively simple, and replicates the anatomy and differential behavior of the two native bundles of ACL more effectively.     

胫骨骨道定位对前交叉韧带单束重建的影响

[目的]探讨胫骨骨隧道定位对前交叉韧带单束重建术后临床疗效的影响.[方法]将60例前交叉韧带断裂患者随机分为对照组和观察组.对照组胫骨骨隧道内口采用外侧半月板游离缘的切线与前后髁间突连线的交点定位;观察组选择原前内侧束和后外侧束中间位置定位.术后矢状位MRI测量胫骨骨道位置、胫骨纵向位移、后交叉韧带指数、膝关节功能评分进行分析评价.[结果]对照组和观察组胫骨骨道分别位于胫骨平台全长的前(38.67±4.23)％和(34.21±2.46)％.胫骨纵向位移为(11.14±2.64)mm和(14.34±2.23)mm,上倾角为(56.2±4.3)°和(44.6±5.2)°,后交叉韧带指数为(3.97±0.45)和(4.78±0.78);两组比较差异均有统计学意义(t检验,P＜0.05).术后1年,对照组与观察组IKDC膝关节主观评分分别为(79.63±4.67)分和(89.76±5.21)分;Lysholm评分分别为(85.61±4.92)分和(92.54±3.22)分,两组比较差异有统计学意义(t检验,P＜0.05).[结论]前交叉韧带单束重建能使患者的关节稳定性与功能均得到显著改善.膝关节MRI测量可较客观、准确地反映胫骨的骨道定位情况.理想的胫骨骨道在矢状位MRI上位于胫骨平台的前(34.21±2.46)％.     

Blount’s disease successfully treated with intraepiphyseal osteotomy with elevation of the medial plateau of the tibia—a case report with 65 years’ follow-up

Background and purpose Non-anatomic bone tunnel placement is the most common cause of a failed ACL reconstruction. Accurate and reproducible methods to visualize and document bone tunnel placement are therefore important. We evaluated the reliability of standard radiographs, CT scans, and a 3-dimensional (3D) virtual reality (VR) approach in visualizing and measuring ACL reconstruction bone tunnel placement.

Methods 50 consecutive patients who underwent single-bundle ACL reconstructions were evaluated postoperatively by standard radiographs, CT scans, and 3D VR images. Tibial and femoral tunnel positions were measured by 2 observers using the traditional methods of Amis, Aglietti, Hoser, Stäubli, and the method of Benereau for the VR approach.

Results The tunnel was visualized in 50–82% of the standard radiographs and in 100% of the CT scans and 3D VR images. Using the intraclass correlation coefficient (ICC), the inter- and intraobserver agreement was between 0.39 and 0.83 for the standard femoral and tibial radiographs. CT scans showed an ICC range of 0.49–0.76 for the inter- and intraobserver agreement. The agreement in 3D VR was almost perfect, with an ICC of 0.83 for the femur and 0.95 for the tibia.

Interpretation CT scans and 3D VR images are more reliable in assessing postoperative bone tunnel placement following ACL reconstruction than standard radiographs.     

Anatomical reconstruction of the anterior cruciate ligament in goats

A surgical procedure was developed for the implantation of an anatomical, two-banded anterior cruciate ligament (ACL) prosthesis. Prostheses were fabricated of braided long-chain polyethylene fibers. The left ACL of adult male goats was surgically excised and replaced with either an anatomical reconstruction (5 goats) or a conventional reconstruction (5 goats). The anatomical reconstruction required drilling four bone tunnels, two each in the femur and tibia. Each band of the prosthesis was placed through one tunnel in the femur and the corresponding tunnel in the tibia, recreating the anteromedial and posterolateral bands. The two bands were tensioned independently and stapled in place. In the conventional procedure, the prosthesis was doubled and placed through two larger tunnels, one in the femur and one in the tibia, tensioned and stapled together. All animals were terminated 3 months after surgery. Clinical evaluation of passive range of motion, antero-posterior laxity and the appearance of the joint space showed little or no difference between the reconstruction methods. The ultimate failure load for the natural (unoperated) ACL was 1691 +/- 210 N, while the anatomical and conventional reconstruction groups had mean ultimate failure loads of 1233 +/- 732 and 1012 +/- 220 N, respectively. The elongation to failure of all groups was similar: the natural ACL group = 7.1 +/- 2.8 mm, the anatomical group = 7.2 +/- 2.9 mm, and the conventional group = 7.7 +/- 3.9 mm. The slope of the load-deformation curve, or stiffness, was significantly higher for the natural ACL (4.53 +/- 1.24 x 10(5) N/m) than for either of the reconstruction methods (2.75 +/- 1.59 x 10(5) N/m for the anatomical and 2.34 +/- 0.60 x 10(5) N/m for the conventional). The energy to failure, or area under the load-deformation curve, showed no significant difference between groups. In conclusion, both types of reconstructions were less strong, stiff, and tough than the natural ACL. There was no significant difference observed between the anatomical and conventional reconstruction methods over the 3-month implantation time in either clinical evaluation or mechanical testing. Therefore, at 3 months postsurgery, the anatomical reconstruction technique was considered no better and no worse than the conventional reconstruction technique.     

Effect of compaction drilling during ACL reconstruction with hamstrings on postoperative tunnel widening

Type of study This study investigates whether the amount of tibial and femoral bone tunnel enlargement following anterior cruciate ligament (ACL) reconstruction with hamstrings can be reduced by compaction bone tunnel drilling. Methods Patients undergoing primary ACL reconstruction with four-strand hamstrings (n = 26) were matched to either extraction drilling (n = 13) or compaction drilling (n = 13). Extracortical femoral fixation was by means of a 20 mm Endobutton CL and tibial fixation was by resorbable interference screw. A CT scan was performed on the second postoperative day and an average of 4 months (range 3.8–5 months) postoperatively in all patients. Tunnel enlargement was determined by digitally measuring the widths perpendicular to the long axis of the tunnels on an oblique coronal and axial plane. The CT measurements were compared to the intraoperative drill diameter. Results With extraction drilling the average tibial tunnel diameter proximal to the interference screw increased from 8.5 to 10.4 mm (P < 0.0001) and the average femoral tunnel from 8.0 to 10.6 mm (P < 0.0001). With compaction drilling it increased from 8.2 to 10.0 mm (P < 0.0001) and from 7.6 to 9.7 mm (P < 0.002), respectively. Tunnel widening was 22% on the tibial side for both groups and 33 versus 28% on the femoral side (P = 0.09) for extraction versus compaction drilling. Conclusion There was a significant tibial and femoral tunnel widening on CT an average of only 4 months following ACL reconstruction with hamstrings. Compaction drilling with a stepped router did not prove to reduce the postoperative tunnel widening significantly. Tunnel widening was higher on the femoral side which could be related to the extracortical femoral fixation technique. Level of evidence Level 4. No benefits in any form have been received, or will be received, from a commercial party related directly or indirectly to the subject of this article.     

双监视法解剖等长重建结合Rigidfix和Intrafix固定技术重建前交叉韧带

目的探讨双监视法解剖等长重建结合Rigidfix和Intrafix固定技术在腘绳肌腱重建前交叉韧带（ACL）中应用的可行性及近期疗效。方法对17例ACL损伤行关节镜下ACL重建术。采用双监视法解剖等长重建技术建立股骨胫骨隧道。股骨端用Rigidfix固定,胫骨端用Intrafix固定。结果17例均获随访,时间1218（14.18±2.19）个月。根据Lysholm膝关节功能评分,术前评分：25-66（46.76±14.79）分;术后1年评分：85-97（92.71±3.22）分（P〈0.01）。结论双监视法解剖等长重建结合Rigidfix和Intrafix固定技术应用在腘绳肌腱重建ACL中,具有定位准确、手术操作简便、固定牢固、疗效确切等优点。     

Accuracy in tunnel placement for ACL reconstruction. Comparison of traditional arthroscopic and computer-assisted navigation techniques.

The purpose of this randomized, prospective study was to compare accuracy in tunnel placement as performed with a traditional arthroscopic anterior cruciate ligament (ACL) reconstruction technique and with KneeNavTM ACL, a computer-assisted surgical navigation technique. Two surgeons experienced in ACL reconstruction, but inexperienced in computer-assisted surgical navigation technique, each randomly used traditional arthroscopic guides or KneeNavTM ACL to drill a tunnel in twenty identical foam knees. Placement of the resulting tibial and femoral tunnels was measured with a computer-assisted digitizing method and compared to traditional biplanar radiographs. Statistical analysis with Student's t-test was used to compare the distance from the ideal tunnel placement to the femoral and tibial tunnels. Accuracy of tunnel placement with KneeNavTM ACL was significantly better than that obtained with the traditional arthroscopic technique. Distances from the ideal tunnel placement to the femoral and tibial tunnels were 4.2 +/- 1.8 mm (mean +/- SD) and 4.9 +/- 2.3 mm, respectively, for the traditional arthroscopic technique, and 2.7 +/- 1.9 mm (femur) and 3.4 +/- 2.3 mm (tibia) for KneeNavTM ACL. These differences were statistically different. Tunnel placement for ACL reconstruction with KneeNavTM ACL, an image-based, computer-assisted surgical navigation device with a simple and intuitive interface, was more accurate than with the traditional arthroscopic technique.     

关节镜下4股半腱肌肌腱重建前交叉韧带疗效观察

目的关节镜下以半腱肌肌腱重建膝前交叉韧带（ACL）,分析影响治疗效果的因素。方法关节镜下4股半腱肌肌腱修复膝ACL损伤25例。膝前小切口取半腱肌肌腱对折后成4股,分别建立胫骨隧道及股骨隧道,重建膝ACL的解剖结构和生理功能,术后早期行功能锻练。结果 25例均获随访,时间12~36个月。术前Lachman征（＋）,术后Lachman征（-）。Lysholm评分从术前27~71（53±13.22）分提高到术后78~94（87±3.42）分。结论半腱肌肌腱具有良好的抗拉强度和刚度,在关节镜下用4股半腱肌肌腱重建膝ACL是一种疗效可靠的治疗方式。