共查询到19条相似文献，搜索用时 109 毫秒
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自体肌腱移植术重建膝关节前交叉韧带术后康复初期(0~8周)从坐姿到站立过程中腘绳肌拉伤的现象较严重,为减少或避免术后腘绳肌拉伤的出现,采取文献综述法以及结合大量临床案例,对腘绳肌拉伤可变危险因素进行分析和筛选,确定主要危险因素,为预防术后腘绳肌拉伤提供一定的理论依据与指明方向。结论:自体肌腱移植术重建膝关节前交叉韧带术后前期腘绳肌拉伤的主要原因为腘绳肌力量与动态柔韧性不足、自体半腱肌移植、代偿性膝内扣。 相似文献
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目的：探讨3D打印技术对关节镜前交叉韧带重建手术的辅助价值。方法：对2017年12月-2018年5月收治的15例因运动损伤导致前交叉韧带断裂且需进行韧带重建的患者，术前进行膝关节CT扫描，Mimcs图像处理，通过3D打印膝关节模型，进行模型上股骨骨隧道定位，并进行预手术，测量隧道长度，术前及术后6个月进行膝关节Lysholm 评分以评估膝关节功能。结果：通过3D打印模型预手术，均较准确地定位了前交叉韧带股骨止点，预手术测量股骨骨隧道平均长度为（43.2±2.13） mm，术中测量（43.7±1.75） mm，术后再次CT测量骨隧道长度为（42.4±3.25） mm，差异无显著性意义（P>0.05），术前Lysholm评分（46.2±5.73） 分，术后Lysholm 评分（88.4±6.25） 分，差异有显著性意义（P＜0.05）。结论：3D打印模型预手术可以辅助关节镜术中较快速、准确地定位前交叉韧带股骨止点，模型与实体骨隧道契合度高，术后疗效优良。 相似文献
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<正>在初中体育课堂短跑项目教学中,学生经常会出现大腿后侧肌群拉伤的问题,如果该问题发生在充分热身的情况下,那么其主要原因就是腘绳肌缺乏力量。腘绳肌主要指大腿后侧肌群,由股二头肌、半腱肌、半膜肌组成,主要具有伸髋和屈膝的功能,在运动中起着非常重要的作用。但是在体育课堂中腘绳肌的力量发展一直被体育教师忽视,训练方法也相对欠缺。本文主要是以“简单”为原则, 相似文献
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目的：分析正脚背踢球动作中下肢和腘绳肌生物力学特征参数,探讨踢球动作腘绳肌拉伤危险时相,同时探究腘绳肌和股四头肌力量素质与踢球动作下肢和腘绳肌生物力学特征的关系,进一步明确踢球动作中腘绳肌拉伤机制。方法：以15名足球专项国家一级运动员为受试者,采集180(°)/s动作角速度下的等速腘绳肌向心(Hcon)、腘绳肌离心(Hecc)、股四头肌向心峰值力矩(Qcon);采集受试者最大力正脚背踢球动作运动学和肌电数据,根据腘绳肌肌肉起止点和髋、膝关节中心的相对位置获得肌肉起止点坐标,从而获得腘绳肌3块双关节肌肌肉-肌腱复合体(muscle-tendon unit,MTU)长度,以MTU拉伸速度和标准化MTU长度为分析指标。采用样条插值法对各指标按踢球动作周期阶段进行3次归一化处理。结果：腘绳肌3块双关节肌在正脚背踢球动作小腿前摆阶段和触球随摆阶段处于激活状态并被拉长,进行离心收缩;触球随摆阶段3块双关节MTU拉伸速度、肌标准化MTU长度、肌肉激活程度均显著大于小腿前摆阶段(P<0.05),标准化MTU长度在触球随摆阶段中期达... 相似文献
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多孔性三维结构生物材料促进运动性韧带损伤重建的实验研究 总被引：6，自引：0，他引：6
目的探讨多孔性三维立体结构生物材料一重组和异种骨(RBX)在运动性前交叉韧带断裂后进行重建过程中的应用效果.方法对15只新西兰白兔实施双侧前交叉韧带重建术,其中一侧移植物两端固定有RBX,另一侧作为对照组,分别于术后2,6和12周取材,进行MicroCT扫描以及组织学染色检测.结果结果显示术后6,12周RBX组腱骨之间组织的BMD数值均高于对照组;组织学则显示术后RBX组较对照组更早,更多的新骨形成.结论RBX可显著提高前交叉韧带重建术后腱骨之间的愈合,较早恢复膝关节功能. 相似文献
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前交叉韧带重建术后的康复训练 总被引：1，自引：0，他引：1
对前交叉韧带重建术后康复训练的文献进行分析研究，了解该领域的发展趋势。应用计算机检索Medline和Cnki1989—2006年间关于前交叉韧带相关文献。研究表明：股四头肌和胭绳肌肌力训练对膝关节功能恢复具有重要的作用，闭合运动链训练适合于康复训练早期，开放运动链训练适合于康复训练晚期；前交叉韧带损伤后，其本体感觉也受到破坏，而术后本体感觉促进训练对膝关节功能的完善至关重要；康复训练方案变得越来越激进，但激进的康复训练也有不利的一面，采用胭绳肌腱和异体肌腱重建前交叉韧带的术后康复训练应更趋于保守。 相似文献
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用自身软骨组织作为介质加速骨腿联合的愈合——兔组织学实验 总被引：1，自引：0，他引：1
最近对膝的研究中发现，在组织学上腱和关节软骨结构的愈合比腱与骨愈合要快。通过以兔子作为实验对象来探索，用自身软骨作为介质来重建纤维软骨骨腱联合区域并加速骨腱联合的愈合在生物学上的可能性。自身纤维软骨（自身身半月板）和秀明软骨（关节软骨）被用来作为介质修复骨腱联合，术后第8个星期我们观察到，使用纤维软骨和透明软骨为修复肌腱接点比单纯的骨腱愈合要修复的更快更好，并且没有退行性改变。通过使用safranino染色法评价其蛋白多糖基质可以看出，介质软骨基质类似于骨腱接点处正常的纤维软骨基质。 相似文献
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运用爱沙尼亚产MYOTON肌肉疲乏测试系统对短道速滑运动员500m比赛后肌肉伸缩性、硬度、弹性进行测试,将运动员赛后数据与赛前12h数据进行对比,并与速度滑冰相同距离比赛运动员肌肉数据进行对比,分析专项疲劳特征,以便为教练员有针对性地安排肌肉恢复训练。根据专项动作结构及涉及肌群,选取了腓肠肌、胫骨前肌、腘绳肌、股直肌、股外侧肌、股内侧肌、臀大肌、腹直肌等8块最重要的肌肉测试。结果表明,短道速滑运动员在500m比赛后,专项动作涉及的8块肌肉的疲劳程度各不相同,与自身赛前安静状态相比,下肢小腿肌群疲劳更为明显。与速度滑冰相同距离比赛的运动员相比,腓肠肌、胫骨前肌、股外侧肌、腘绳肌、臀大肌疲劳程度更高。 相似文献
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The aim was to compare fear of re-injury, patient reported function, static and dynamic tibial translation and muscle strength assessed before and 5 weeks after an anterior cruciate ligament (ACL) reconstruction between individuals who sustained a subsequent ACL graft rupture or a contralateral ACL injury within 5 years after the reconstruction, and individuals with no subsequent injury. Nineteen patients were investigated before, and 5 weeks after an ACL reconstruction with a quadruple hamstring tendon graft. At 5 years follow up, 3 patients had sustained an ACL graft rupture and 2 patients had sustained a contralateral ACL rupture. Fear of re-injury, confidence with the knee, patient reported function, activity level, static and dynamic tibial translation and muscle strength were assessed. The re-injured group reported greater fear of re-injury and had greater static tibial translation in both knees before the ACL reconstruction compared to those who did not sustain another ACL injury. There were no other differences between groups. In conclusion, fear of re-injury and static tibial translation before the index ACL reconstruction were greater in patients who later on suffered an ACL graft rupture or a contralateral ACL rupture. These factors may predict a subsequent ACL injury. 相似文献
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Filippo Migliorini Alice Baroncini Jörg Eschweiler Markus Tingart Nicola Maffulli 《运动与健康科学(英文)》2022,11(1):123-129
Purpose:The present study aimed to systematically review and compare 2 femoral autograft fixation techniques,namely,interference screws and suture anchors,for isolated medial patellofemoral ligament reconstruction in patients with recurrent patellofemoral instability at mid-to long-term follow-up.Methods:A literature search was performed in September 2020.All studies reporting the outcomes of primary isolated medial patellofemoral ligament reconstruction for recurrent patellofemoral instability were considered for inclusion.Only studies reporting the type of femoral autograft fixation under examination were considered.Studies reporting data from patients with elevated tibial tuberosity-tibial groove,patella alta,and/or Dejour’s trochlear dysplasia types C and D,were not included.Only articles reporting data with a minimum follow-up period of 18 months were considered.Results:Data from 19 studies(615 patients)were retrieved.The overall age was 24.4±6.7 years(mean±SD).The mean follow-up was 46.5±20.9 months.There were 76 patients in the anchor group and 539 in the screw group.Comparability was found with regard to age and follow-up duration between the 2 study groups.There was comparability between the Kujala,Lysholm,and Tegner scores at baseline.At the last follow-up,no worthy differences were found in terms of mean Kujala(+2.1%;p=0.04),Lysholm(+1.7%;p=0.05),and Tegner(+15.8%;p=0.05)scores.Although complications occurred almost exclusively in the screw cohort,no statistically significant difference was found.Conclusion:Femoral autograft fixation through interference screws or suture anchors report similar clinical scores and rate of apprehension test,persistent joint instability,re-dislocations,and revisions.These results must be interpreted within the limitations of the present study. 相似文献
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《运动与健康科学(英文)》2023,12(3):343-358
BackgroundFor the past 30 years, the hamstring (H)-to-quadriceps (Q) (H:Q) torque ratio has been considered an important index of muscle strength imbalance around the knee joint. The purpose of this systematic review was to examine the value of H:Q torque ratio as an independent risk factor for hamstring and anterior cruciate ligament (ACL) injuries.MethodsDatabase searches were performed to identify all relevant articles in PubMed, MEDLINE, Cochrane Library, and Scopus. Prospective studies evaluating the conventional (concentric H:Q), functional (eccentric H: concentric Q), and mixed (eccentric H at 30°/s: concentric Q at 240°/s) H:Q ratios as risk factors for occurrence of hamstring muscle strain or ACL injury were considered. Risk of bias was assessed using the Quality In Prognosis Studies tool.ResultsEighteen included studies reported 585 hamstrings injuries in 2945 participants, and 5 studies documented 128 ACL injuries in 2772 participants. Best evidence synthesis analysis indicated that there is very limited evidence that H:Q strength ratio is an independent risk factor for hamstring and ACL injury, and this was not different between various ratio types. Methodological limitations and limited evidence for ACL injuries and some ratio types might have influenced these results.ConclusionThe H:Q ratio has limited value for the prediction of ACL and hamstring injuries. Monitoring strength imbalances along with other modifiable factors during the entire competitive season may provide a better understanding of the association between H:Q ratio and injury. 相似文献
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在对实验性切除中部1/3髌韧带后,剩余部分髌韧带修复过程进行有关研究时,发现在术后的3至9个月,已修复的伤口区中央出现一些类似骨样的细胞和结构。通过进行茜素红染色和对骨形成蛋白-4(BMP-4)基因表达进行原位杂交研究。我们认为:这是一种钙化现象,属不良修复的可能性大,而非是自然修复的一个过程。钙化现象可能是导致韧带损伤修复后功能不能恢复正常的原因之一。同时我们还发现 BMP-4 基因在那些类似骨细胞样的过渡型的间充质细胞中存在着表达,提示:BMP-4 基因在髌韧带修复过程中会起着一定的作用,可能也在钙化现象的发生当中担当一定的角色。 相似文献
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目的:运动康复训练对不同病程半月板损伤术后功能恢复的影响。方法:选取2014年3月至2015年3月在山东中医药大学第一附属医院采用关节镜治疗半月板损伤患者156例,其中男性67例,女性89例。采用系统运动康复训练进行术后干预,通过Lysholm疗效评分、Tegner运动水平评分表及疼痛VAS评分标准以评定患者的临床疗效。结果:3组较术前均有明显改善。结论:早期、规律的运动康复指导能够很好地帮助不同病程膝半月板损伤的术后人群恢复良好的日常生活能力。 相似文献
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在大白鼠体内模型中,对实验性切除中部1/3髌韧带后,剩余部分髌韧带早期修复过程中的细胞行为和组织学变化进行了研究。研究表明:髌韧带存在着内在修复能力,在本模型中伤口的修复是从伤口中部开始并向腹侧和背侧延伸。伤口的修复先是伤口周边的细胞移行进伤口,然后到达目的地的细胞开始分泌胶原蛋白,并形成新生的胶原纤维。纤维粘连蛋白在损伤修复的早期存在表达,可能是充当使参与修复的细胞从伤口的边缘移行到伤口中央的生物桥梁。伤口中的细胞和胶原纤维修复到接近组织学正常的时间约需6至9个月。 相似文献
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Marco Freddolini Aluena Battaglioli Filippo Chiechi Giacomo Placella Anastasios Georgoulis Giuliano Cerulli 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(4):384-393
The purpose of the study was to evaluate whether using only the semitendinosus as a tripled short graft would affect the electromechanical delay (EMD) of the knee flexors. EMD was evaluated in volunteers (N = 15) after they had undergone surgery for anterior cruciate ligament (ACL) reconstruction where the semitendinosus tendon alone was used as a graft. The results were compared with the intact leg and healthy controls (N = 15). After warming up, each subject performed four maximally explosive isometric contractions on an isokinetic dynamometer. Torques were measured by the dynamometer, while the electrical activity of the semitendinosus and biceps femoris muscles was detected using surface electromyography. EMD was found to be significantly increased (p = 0.001) in patients who had undergone ACL reconstruction compared to the controls. On the contrary, no significant differences (p = 0.235) were found for the biceps femoris muscle between the two groups. Similar results were found when the study group was compared with the intact leg group (p = 0.027 for semitendinosus and p = 0.859 for biceps femoris). Harvesting the semitendinosus tendon increases the EMD for the semitendinosus muscle but does not influence the EMD outcomes for the biceps femoris muscle. 相似文献
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采用低功率激光对一次性离心力竭运动大鼠跟腱进行照射,采用生物化学测定和组织学技术观察的方法,分析低功率激光照射对跟腱蛋白多糖含量影响,探讨低功率激光照射对力竭运动后早期跟腱微损伤修复中的作用,结果显示：一次性离心力竭运动大鼠跟腱中蛋白多糖含量显著高于空白对照组;激光照射组蛋白多糖含量的变化与自然愈合组一样,是随时间增加而逐渐升高,但增加幅度要大于自然愈合组。表明低功率激光照射能促进大鼠跟腱蛋白多糖的合成,加快跟腱细胞外基质成分的恢复,有利于受损跟腱的修复。 相似文献