An analysis of the incidence, risk factors, and timing of development of cyclops lesions after anterior cruciate ligament reconstruction.

T. Moran, Eric R. Taleghani, Jeffrey R. Ruland, Anthony J. Ignozzi, J. Hart, D. Diduch
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Abstract

BACKGROUND Cyclops lesions are a known complication following anterior cruciate ligament reconstruction (ACLR) with a described incidence between 1.9% to 10.9%. The objective of this study was to identify the incidence, timing, and variables that correlated with development of a cyclops lesion, and if objective functional testing differed between patients with and without cyclops lesions. METHODS 313 consecutive patients who underwent ACLR and participated in Lower-Extremity Assessment Protocol (LEAP) testing at a single, academic institution were analyzed. Retrospective chart review was performed to identify patient demographic factors, medical comorbidities, and potential peri-operative risk factors. Postoperative functional outcome metrics and patient reported outcomes were collected per the institution's LEAP testing protocol. Binary logistic regression was utilized to identify risk factors for cyclops lesions. Objective functional outcomes and patient reported outcomes were compared between patients with and without cyclops lesions. RESULTS 23/313 (7.35%) patients developed a cyclops lesion following ACLR, of which 17 (73.91%) were found to be symptomatic. Concomitant meniscal repair correlated with an increased likelihood of developing a cyclops lesion (p = 0.040); no other risk factors significantly differed between cohorts. There were no clinically relevant extension deficits or differences in objective functional performance measures at six months post-operatively between study cohorts. CONCLUSIONS Concomitant meniscal repair may be associated with the development of cyclops lesions due to restrictive postoperative range of motion protocols; however no other pre- or intra-operative factors demonstrated significant correlation. Presence of a cyclops lesion should be considered with late loss of knee extension after ACLR.
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前交叉韧带重建后独眼病变的发生率、危险因素和发展时机分析。
背景:独眼病变是前交叉韧带重建(ACLR)后的一种已知并发症,发病率在1.9%至10.9%之间。本研究的目的是确定与独眼病变发展相关的发生率、时间和变量,以及有无独眼病变患者的客观功能测试是否存在差异。方法对在单一学术机构连续接受ACLR并参加下肢评估方案(LEAP)测试的s313例患者进行分析。进行回顾性图表回顾,以确定患者人口统计学因素、医疗合并症和潜在的围手术期危险因素。术后功能结果指标和患者报告的结果根据该机构的LEAP测试协议收集。采用二元logistic回归分析独眼病变的危险因素。客观功能结果和患者报告的结果比较有和没有独眼病变的患者。结果313例患者中有23例(7.35%)出现ACLR术后独眼病变,其中17例(73.91%)出现症状。伴随的半月板修复与发生独眼病变的可能性增加相关(p = 0.040);其他危险因素在队列之间没有显著差异。在研究队列之间,术后6个月没有临床相关的伸展缺陷或客观功能表现测量的差异。结论由于术后活动范围的限制,伴随半月板修复可能与单眼病变的发生有关;然而,其他术前或术中因素均无明显相关性。在ACLR术后,如果出现独眼病变,则应考虑膝关节伸展能力的丧失。
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Kinematic comparison between the knee after bicruciate stabilized total knee arthroplasty and the native knee: A cadaveric study. Is cement mantle thickness a primary cause of aseptic tibial loosening following primary total knee arthroplasty? A new look at quadriceps tendon - Is it really composed of three layers? An analysis of the incidence, risk factors, and timing of development of cyclops lesions after anterior cruciate ligament reconstruction. Immunohistochemical analysis of the quadriceps femoris muscle before and after total knee arthroplasty.
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