An adaptation to changes in knee muscle strength is a basic principle for rehabilitation after anterior cruciate ligament reconstruction

Chen Jian

doi:10.3969/j.issn.2095-4344.2014.38.020

Abstract：BACKGROUND:How to improve reduced muscle strength and the electromechanical delay of the knee flexor at early stage after anterior cruciate ligament reconstruction is worth studying. <br> OBJECTIVE:To review the research development of muscle strength change and rehabilitation after anterior cruciate ligament reconstruction. <br> METHODA computer-based search of PubMed and Wanfang databases was performed for articles related to muscle strength change after anterior cruciate ligament reconstruction, elevation methods, muscle function rehabilitation published from January 2000 to January 2014. The keywords were“anterior cruciate ligament;hamstring;muscle strength;electromechanical delay”in English and Chinese. Final y 34 articles were included in result analysis. <br> RESULTS AND CONCLUSION:Removal of the hamstring tendon can decrease muscle strength of the involved knee flexor and tibial internal rotation strength, then affect the involved knee stability and functional ability. Based on the clinical signs and isokinetic testing results, we can assess the clinical effects after anterior cruciate ligament reconstruction. The change of H/Q ratio can be used to guide the rehabilitation after anterior cruciate ligament injury. Graft remodeling process after anterior cruciate ligament reconstruction has a longer period than other animal experimental studies, and tendon relaxation degree is an important factor influencing electromechanical delay. Based on the basic rehabilitation principles, the rehabilitation training is adjusted timely according to the individual functional level to ful y embody the individualized training. Both domestic and foreign researches indicate that the rehabilitation process begins before anterior cruciate ligament reconstruction, in order to start training of muscle contraction as early as possible to maximize prevent muscle atrophy. The problems are mainly concentrated in the more refined and scientific rehabilitation methods and the degree of early rehabilitation training.