关节镜下采用Rigidfix和Intrafix系统 固定重建后交叉韧带

目的评价关节镜下采用Rigidfix可吸收横穿钉和Intrafix膨胀挤压螺钉系统固定重建后交叉韧带的疗效。方法 2008年6月~2011年6月,对17例后交叉韧带损伤的患者,关节镜下重建时采用Rigidfix固定移植肌腱股骨侧,Intrafix固定移植肌腱胫骨侧,对患者手术前后行后抽屉试验及Lysholm评分。结果随访时间22~46个月(平均33.7个月),所有患者膝关节不稳感均消失,关节活动度均达120°以上,Lysholm评分从术前(53.62±4.28)分增加到术后(88.5±3.4)分,手术前后比较,差异具有显著性(P<0.05)。结论关节镜下采用Rigidfix可吸收横穿钉和Intrafix膨胀挤压螺钉固定系统重建后交叉韧带,固定可靠,临床效果满意。     

同种异体肌腱前交叉韧带重建术17例效果观察及康复护理

目的:探讨关节镜下深低温冷冻同种异体肌腱重建膝前交叉韧带(ACL)术后康复护理方法。方法:选择17例关节镜下同种异体肌腱重建ACL患者为观察组,17例同期关节镜下自体肌腱重建ACL患者为对照组,均给予一对一式健康教育、康复训练指导和护理干预。结果:34例患者随访6～14个月(平均10个月),术后6个月膝关节Lysholm评分:异体肌腱移植组评分86.3±4.53分,同期自体肌腱移植组评分87.2±3.69分,两组比较无显著性差异(P>0.05)。结论:同种异体肌腱重建膝前交叉韧带术,经积极健康教育和科学的康复训练指导与护理干预,可取得满意效果。     

关节镜辅助下膝关节前、后交叉韧带联合损伤的治疗

目的 探讨关节镜辅助下联合使用自体和同种异体肌腱修复膝关节前后交叉韧带损伤的方法和疗效观察.方法 关节镜辅助下采用自体腘绳肌腱修复前交叉韧带,同种异体肌腱修复后交叉韧带,术后用Lysholm功能评分和KT2000测量进行膝关节功能评定.结果 29例患者获得随访,平均随访28个月.术前Lysholm功能评分平均(58.2±4.3)分,终末随访时平均(91.4±4.1)分,差异有显著性(P<0.05).术后终末随访时KT2000关节稳定性定量测量结果显示,患膝较健膝略松弛,但统计学上差异无显著性.结论 关节镜辅助下联合使用自体和同种异体肌腱修复膝关节前后交叉韧带损伤是治疗膝关节多韧带损伤,重建膝关节稳定性的一有效方法.     

关节镜下自体四股腘绳肌腱重建前交叉韧带

目的 探讨自体四股腘绳肌腱重建前交叉韧带(ACL)的手术方法及疗效.方法 关节镜下以自体四股胭绳肌腱为ACL重建替代物,保留少许ACL残端作为定位标志物,应用钛质界面挤压螺钉固定,对41例ACL损伤病例行重建术.结果 随访6个月～2年,平均12个月.术后38例膝关节活动度在正常范围,无韧带撞击现象.轴移试验术后全部阴性.Lysholm评分由术前(48.8±1.25)分,提高到术后(90.3±1.08)分(P<0.05),差异有显著性.结论 关节镜下自体四股腘绳肌腱重建ACL是恢复膝关节稳定性较好的方法.     

关节镜下胫骨双隧道股骨单隧道八股同种异体肌腱重建膝前交叉韧带

目的 介绍关节镜下胫骨双隧道股骨单隧道八股同种异体肌腱重建膝前交叉韧带(anterior cruciate ligament,ACL)的手术方法以及应用体会.方法 关节镜下对67例(70个膝)膝关节ACL断裂患者应用同种异体肌腱反折编织形成八股"人"字形移植物,采用胫骨双隧道、股骨单隧道界面螺钉固定的方法重建ACL,观察近期术后疗效,以Lysholm评分、Larson评分及IKDC评分评价比较手术前后膝关节功能,以MRI及X线观察骨隧道变化情况.结果 62例患者(65个膝关节)获得随访,随访时间4～20个月,平均13个月.关节活动度均正常,Lysholm评分由术前(57.4±3.3)提高到(93.8±3.4)分;Larson评分由(54.3±3.8)提高到(92.7±2.5)分,IKDC评分由(59.6±2.4)提高到(93.5±4.2)分,差异均有统计学意义;复查MRI,5例患者出现骨隧道扩大:2例股骨及胫骨前内侧隧道均扩大,3例为前内侧骨隧道.所有患者均未见关节间隙变窄,均未出现螺钉松动、移植物松动.结论 应用八股同种异体肌腱胫骨双隧道、股骨单隧道界面挤压螺钉固定重建ACL手术操作简便,关节稳定性佳,最大限度恢复解剖重建,近期疗效佳,远期效果有待进一步观察.     

关节镜下双固定单束解剖位重建膝关节前交叉韧带

目的:对关节镜下联合应用Endobutton、Rigidfix及Intrafix系统固定自体腘绳肌腱进行单束解剖位重建膝关节前交叉韧带(ACL)的临床疗效进行初步观察。方法:回顾性分析2009年10月至2011年4月经关节镜下确诊膝关节ACL损伤的28例患者行关节镜下单束解剖位ACL重建术的临床资料,股骨端应用Endobutton、Rigidfix固定,胫骨端应用Intrafix固定,重建用肌腱均为自体半腱肌及股薄肌,通过抽屉试验、Lachman试验、轴移试验及Lysholm评分对术后疗效进行观察。结果:随访7～21个月(平均14个月),前抽屉试验、Lachman征均为阴性,4例轴移试验弱阳性,Lysholm评分从术前26～49分,平均(40.77±6.68)分升高到术后85～96分,平均(92.27±3.33)分,评分有统计学差异(P<0.05)。结论:关节镜下双固定单束解剖位重建ACL,固定稳妥,有利于术后早期进行关节屈伸锻炼,可有效防止关节粘连、退变等并发症,且术后有更好的旋转功能,临床疗效优良。     

关节镜下联合应用Rigidfix、Endobutton和Intrafix系统固定腘绳肌腱重建前交叉韧带

背景:关节镜下前交叉韧带重建是治疗膝关节前交叉韧带损伤的金标准,但在肌腱的固定方式方面仍有分歧。目的:观察联合运用Rigidfix、Endobutton和Intrafix系统在关节镜下进行自体腘绳肌腱重建前交叉韧带的临床效果。方法:选取2009-05/2010-05在郑州大学第一附属医院关节外科应用Rigidfix、Endobutton和Intrafix系统行关节镜下自体腘绳肌腱重建前交叉韧带的患者30例,该组患者关节镜下均证实为膝关节前交叉韧带损伤断裂。其中男22例,女8例,年龄16~45岁。将患者股骨端用Endobutton、Rigidfix固定,胫骨端用Intrafix固定,观察术后近期疗效,以Lysholm评分、IKDC评分评价膝关节功能。结果与结论:对30例患者随访5~17个月(平均12个月),随访期间无严重并发症发生,所有患者患膝关节活动度正常,平均Lysholm评分和IKDC评分分别由术前的(50.0±6.0)分和(49.5±5.5)分提高到术后的(85.5±3.5)分和(87.0±2.5)分(P<0.05)。说明联合应用Rigidfix、Endobutton和Intrafix系统进行自体腘绳肌腱重建前交叉韧带的方法具有近期疗效佳、移植物固定可靠、并发症少等优点,能够达到良好的临床康复效果。     

关节镜下前交叉韧带重建300例临床研究

目的 探讨关节镜下采用自体半腱肌腱和股薄肌腱重建前交叉韧带(ACL)的短期临床效果.方法 对300例陈旧性ACL断裂患者在关节镜下重建ACL,均采用自体半腱肌腱和股薄肌腱,利用RigidFix /Endobutton和Intrafix/可吸收挤压钉+门形钉系统对移植物进行固定.按照Lysholm和国际膝关节评分委员会(IKDC)膝关节评分标准进行主观评估;按照Lachman试验、PST试验和KNEELAX3检查进行客观评估.结果 所有患者术后获随访10～48个月,平均24个月;Lysholm评分:术前评分平均(50.2±6.4)分,术后最终评分平均(93.3±3.5)分,术前术后对比差异有统计学意义(P<0.01);IKDC评分总体优良率为90.00%;KNEELAX3测量结果:术前差别为5～15 mm,平均(9.85±1.4)mm,术后最终测量为0～5 mm,平均(1.46±1.3)mm,两组差异有统计学意义(P<0.01).结论 关节镜下采用自体半腱肌腱和股薄肌腱重建ACL是一种恢复膝关节稳定性的可靠方法.     

关节镜下联合应用Rigidfix、Endobutton和Intrafix系统固定腘绳肌腱重建前交叉韧带

背景：关节镜下前交叉韧带重建是治疗膝关节前交叉韧带损伤的金标准,但在肌腱的固定方式方面仍有分歧。目的：观察联合运用Rigidfix、Endobutton和Intrafix系统在关节镜下进行自体腘绳肌腱重建前交叉韧带的临床效果。方法：选取2009-05/2010-05在郑州大学第一附属医院关节外科应用Rigidfix、Endobutton和Intrafix系统行关节镜下自体腘绳肌腱重建前交叉韧带的患者30例,该组患者关节镜下均证实为膝关节前交叉韧带损伤断裂。其中男22例,女8例,年龄16~45岁。将患者股骨端用Endobutton、Rigidfix固定,胫骨端用Intrafix固定,观察术后近期疗效,以Lysholm评分、IKDC评分评价膝关节功能。结果与结论：对30例患者随访5~17个月（平均12个月）,随访期间无严重并发症发生,所有患者患膝关节活动度正常,平均Lysholm评分和IKDC评分分别由术前的（50.0±6.0）分和（49.5±5.5）分提高到术后的（85.5±3.5）分和（87.0±2.5）分（P〈0.05）。说明联合应用Rigidfix、Endobutton和Intrafix系统进行自体腘绳肌腱重建前交叉韧带的方法具有近期疗效佳、移植物固定可靠、并发症少等优点,能够达到良好的临床康复效果。     

关节镜下四股腘绳肌腱重建前交叉韧带疗效观察

目的 探讨关节镜下自体四股腘绳肌腱重建前交叉韧带的临床疗效.方法 回顾性分析39例前交叉韧带断裂者在关节镜下采用四股腘绳肌腱重建前交叉韧带,其中股骨侧Endobutton系统固定17例,Rigidfix系统固定22例.结果 所有患者平均随访14.1个月,膝关节Lysholm评分由术前(51.8±2.4)分提高到术后(92.4±1.6)分(P＜0.05),KT-1000测量由术前(9.4±3.8)mm提高到术后(3.3±1.5)mm(P＜0.05),差异有显著性.Endobutton系统固定组术后Lysholm评分(91.1±3.2)分,KT-1000测量为(3.5±1.8)mm;Rigidfix系统固定组术后Lysholm评分(93.5±2.7)分,KT-1000测量为(3.1±2.0)mm,P＞0.05,两组间差异无显著性.结论 关节镜下四股股薄肌腱重建前交叉韧带近期临床疗效好,术后并发症少,稳定性好,股骨侧Endobutton系统和Rigidfix系统固定近期临床疗效无明显差别.     

重建前交叉韧带中Endo-Button和可吸收界面螺钉固定的对比

背景：应用腘绳肌肌腱重建前交叉韧带过程中仍有许多的争议及未知因素需进一步探讨和研究。目的：比较分析腘绳肌肌腱重建前交叉韧带过程中股骨端分别使用Endo-Button系统和可吸收界面螺钉两种不同固定方式的疗效。方法：选择45例在关节镜下使用4股自体腘绳肌腱进行前交叉韧带重建患者,实验组25例股骨端使用Endo-Button钢板固定,对照组20例使用可吸收界面螺钉固定。重建后用相同的方法进行康复锻炼。结果与结论：经过6-21个月的随访,患者膝关节屈伸活动度均达正常范围。Lachman试验中实验组Ⅰ度阳性2例,对照组Ⅰ度阳性3例;轴移试验均阴性。两组重建后膝关节Lysholm评分均较治疗前明显改善,两组间差异无显著性意义。两组随访早期均有较高的骨道扩大发生率,但组间差异无显著性意义;对照组骨道增宽程度强于实验组（P〈0.05）。说明两组早期总体临床效果相近。     

Endobutton钢板及Rigidfix横穿钉固定自体腘绳肌腱重建前交叉韧带

背景:Endobutton的钢板设计和Rigidfix的横穿钉优点使之较广泛地在前交叉韧带重建中应用。目的:比较分析自体腘绳肌腱行前交叉韧带单束重建过程中Endobutton和Rigidfix系统的效果差异。方法:选取2007-04/2009-06运用Endobutton系统和Rigidfix-Intrafix系统行自体腘绳肌腱单束重建前交叉韧带各30例患者,重建前分别记录前抽屉试验、Lachman试验、轴移试验结果及Lysholm膝关节评分。由同一术者按两种方案分别重建前交叉韧带后,进行正规康复锻炼。重建后定期随访并由同一人记录随访指标,与重建前指标进行对比分析,评价两组患者症状的改善程度。结果与结论:Endobutton组患者经过6～26个月的随访,Lysholm膝关节评分由重建前(56.6±5.9)分增长到重建后(91.4±4.0)分。经t检验,差异有显著性意义(P<0.05)。Rigidfix组患者经过6～24个月的随访,Lysholm膝关节评分由重建前(59.2±6.4)分增长到重建后(93.1±4.7)分,经t检验,差异有显著性意义(P<0.05)。Endobutton组与Rigidfix组重建后Lysholm膝关节评分差异无显著性意义(P>0.05)。经过分析,并不能得出其中某一套系统强于另一套系统的结论。它们各自均有独特的优势,同时又不能互相取代。     

Endobutton钢板及Rigidfix横穿钉固定自体腘绳肌腱重建前交叉韧带

背景：Endobutton的钢板设计和Rigidfix的横穿钉优点使之较广泛地在前交叉韧带重建中应用。目的：比较分析自体腘绳肌腱行前交叉韧带单束重建过程中Endobutton和Rigidfix系统的效果差异。方法：选取2007-04/2009-06运用Endobutton系统和Rigidfix-Intrafix系统行自体腘绳肌腱单束重建前交叉韧带各30例患者,重建前分别记录前抽屉试验、Lachman试验、轴移试验结果及Lysholm膝关节评分。由同一术者按两种方案分别重建前交叉韧带后,进行正规康复锻炼。重建后定期随访并由同一人记录随访指标,与重建前指标进行对比分析,评价两组患者症状的改善程度。结果与结论：Endobutton组患者经过6～26个月的随访,Lysholm膝关节评分由重建前（56.6±5.9）分增长到重建后（91.4±4.0）分。经t检验,差异有显著性意义（P〈0.05）。Rigidfix组患者经过6～24个月的随访,Lysholm膝关节评分由重建前（59.2±6.4）分增长到重建后（93.1±4.7）分,经t检验,差异有显著性意义（P〈0.05）。Endobutton组与Rigidfix组重建后Lysholm膝关节评分差异无显著性意义（P〉0.05）。经过分析,并不能得出其中某一套系统强于另一套系统的结论。它们各自均有独特的优势,同时又不能互相取代。     

Mechanical comparison of biodegradable femoral fixation devices for hamstring tendon graft – A biomechanical study in a porcine model

Background

Initial fixation strength is critical for the early post-operative rehabilitation of patients with anterior cruciate ligament reconstructions. However, even the best femoral fixation devices remain controversial. We compared the biomechanical characteristics of tendon grafts fixed by different biodegradable femoral fixation devices following anterior cruciate ligament reconstruction.

Methods

The Bio-TransFix, Rigidfix, Bioscrew with EndoPearl augmentation and Bioscrew devices were used to fix porcine flexor digitorum profundus tendon grafts in 32 porcine femora. Displacement of each tendon graft was evaluated after cyclic loading testing. Stiffness, ultimate failure load and failure mode of these fixation devices were measured with load-to-failure testing.

Findings

The displacement of the femur–graft–cement complex in response to cyclic loading was lower (P < 0.05) for the Bio-TransFix than the Rigidfix, Bioscrew with EndoPearl augmentation, and Bioscrew groups. The fixation stiffness values of the Rigidfix and the Bioscrew were significantly greater (P < 0.05) than that of the Bio-TransFix. The ultimate failure load was significantly greater for the Bio-TransFix and the Rigidfix than the Bioscrew with EndoPearl augmentation or the Bioscrew (P < 0.05).

Interpretation

The Bio-TransFix provided the least graft displacement under cyclic loading. However, this device gave less stability. The Rigidfix device provided better stability and stiffness of the tendon graft among those fixation devices that showed no significant differences in graft displacement under cyclic loading. However, no single fixation device provided less displacement along with a larger failure load and stiffness in this study.     

Tendon fixation in arthroscopic latissimus dorsi transfer for irreparable posterosuperior cuff tears: an in vitro biomechanical comparison of interference screw and suture anchors

Background

The fixation of the tendon to the bone remains a challenging problem in the latissimus dorsi tendon transfer for irreparable cuff tears and can lead to unsatisfactory results. A new arthroscopic method of tendon to bone fixation using an interference screw has been developed and the purpose of this study was to compare its biomechanical properties to the ones of a standard fixation technique with anchors.

Methods

Six paired fresh frozen cadaveric human humeri were used. The freed latissimus dorsi tendon was randomly fixed to the humeral head with anchors or with interference screw after a tubularization procedure. Testing consisted to apply 200 cycles of tensile load on the latissimus dorsi tendon with maximal loads of 30 N and 60 N, followed by a load to failure test. The stiffness, displacements after cyclic loadings, ultimate load to failure, and site of failure were analysed.

Findings

The stiffness was statistically higher for the tendons fixed with interference screws than for the ones fixed with anchors for both 30 N and 60 N loadings. Likewise, the relative bone/tendon displacements after cyclic loadings were lower with interference screws compared to anchors. Load to failure revealed no statistical difference between the two techniques.

Interpretation

Compared to the standard anchor fixation, the interference screw fixation technique presents higher or similar biomechanical performance. These results should be completed by further biomechanical and clinical trials to confirm the interest of this new technique as an alternative in clinical use.     

Interference screw fixation of doubled flexor tendon graft in anterior cruciate ligament reconstruction - biomechanical evaluation with cyclic elongation

OBJECTIVE: To biomechanically evaluate interference screw fixation of the doubled flexor tendon graft in anterior cruciate ligament reconstruction using cyclic elongation. DESIGN: Biomechanical properties of the interference screw fixation of the flexor tendons were compared with those of three standard fixation techniques which had been commonly performed in anterior cruciate ligament reconstruction. BACKGROUND: The interference screw fixation of the flexor tendon graft has attracted notice because of various possible advantages. METHODS: Forty fresh frozen porcine hind limbs were divided into four groups of ten knees each. Anterior cruciate ligament reconstruction was carried out in each group using one of four different procedures. For each group, five femur-graft-tibia complexes underwent submaximal cyclic elongation of 5000 cycles after initial tension of 80 N was applied. Then, tensile testing was performed in the same manner for the complex with a tensile tester. The remaining five complexes were examined in the same tensile test without applying any cyclic elongation. RESULTS: The initial tension was more rapidly relaxed by cyclic elongation in the flexor tendon graft fixed with interference screws than in the bone-patellar tendon-bone graft fixed with two standard techniques. After cyclic elongation, while the ultimate failure load of the former was significantly lower than the latter, the linear stiffness of the former was significantly higher than the flexor tendon graft fixed with sutures. CONCLUSION: The present study has clarified that the advantage of the interference fixation for the doubled flexor tendon graft is the high linear stiffness of the FGT complex, and the disadvantage of this screw is the low ultimate failure load of the FGT complex. RELEVANCE: The present study has suggested that vigorous activities should not be permitted for the patients in the early period after anterior cruciate ligament reconstruction using this fixation technique, because of its low ultimate failure load.     

关节镜下四股胭绳肌腱重建前交叉韧带

【目的】探讨关节镜下应用自体四股胭绳肌腱重建膝关节交叉韧带（ACL）的手术方法和疗效。【方法】关节镜下34例患者以自体胭绳肌腱作为ACL的重建替代物,两端分别应用纽扣钢板和可吸收螺钉固定。【结果】所有患者均得到平均10（6～20个月）个月的随访,Lachman试验除3例阳性外,其余均为阴性。所有患者轴移试验均为阴性。Lyshlom膝关节功能评分从术前的41．79±9．23分提高至术后90．59±15．33分,手术前后比较差异有显著性（P〈0．05）。【结论】关节镜下自体胭绳肌腱移植重建前交叉韧带具有创伤小、并发症少等的优点,是恢复膝关节稳定性的可靠方法。     

The effect of cyclic loading on the biomechanical characteristics of the femur-graft-tibia complex after anterior cruciate ligament reconstruction using Bone Mulch screw/WasherLoc fixation

BACKGROUND: The Bone Mulch screw/WasherLoc fixation system has attracted notice because of its possible advantages. The purpose of the present study was to compare the biomechanical properties of this fixation system for the double-looped flexor tendon graft with those of two standard fixation techniques that had been commonly performed in anterior cruciate ligament reconstruction. METHODS: Anterior cruciate ligament reconstruction was carried out in each group using one of three different procedures (n=14 for each procedure). For each group, seven femur-graft-tibia complexes underwent submaximal cyclic displacement of 5000 cycles after an initial tension of 20N was applied. Then, tensile testing was performed for the complex at a single position, 45 degrees of knee flexion, in which the longitudinal axis of the graft coincided with the axis of the bone tunnels. The remaining seven complexes in each group were examined in the same tensile test without applying any cyclic displacement. FINDINGS: At the 5000th cycle of the displacement, the peak load of the complex with the Bone Mulch screw/WasherLoc system was significantly higher than that with the Endobutton technique (P<0.0001). After 5000 cycles of displacement, the initial stiffness and the linear stiffness of the complex with the Bone Mulch screw/WasherLoc system were significantly higher than those with the double-looped tendon graft and the Endobutton technique (P<0.0001 for both comparisons), while those with the Bone Mulch screw/WasherLoc system were significantly lower than those with the patellar tendon graft with interference screws (initial stiffness: P=0.0004, linear stiffness: P=0.0007). INTERPRETATION: The present study has clarified that the Bone Mulch screw/WasherLoc system provides high stiffness to the complex for the double-looped flexor tendon graft.