Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Influence of the Open Kinetic Chain on the Distension of the Transplant after Anterior Cruciate Ligament Surgery with Hamstring Graft: Search for Risk Factors

Version 1 : Received: 14 September 2020 / Approved: 16 September 2020 / Online: 16 September 2020 (05:55:45 CEST)

How to cite: Belloir, M.; Mazeas, J.; Traullé, M.; Vandebrouck, A.; Duffiet, P.; Ratte, L.; Forelli, F. Influence of the Open Kinetic Chain on the Distension of the Transplant after Anterior Cruciate Ligament Surgery with Hamstring Graft: Search for Risk Factors. Preprints 2020, 2020090350 (doi: 10.20944/preprints202009.0350.v1). Belloir, M.; Mazeas, J.; Traullé, M.; Vandebrouck, A.; Duffiet, P.; Ratte, L.; Forelli, F. Influence of the Open Kinetic Chain on the Distension of the Transplant after Anterior Cruciate Ligament Surgery with Hamstring Graft: Search for Risk Factors. Preprints 2020, 2020090350 (doi: 10.20944/preprints202009.0350.v1).

Abstract

Rehabilitation following anterior cruciate ligament reconstruction with hamstring graft allows the patient to regain his functional capacities and to support him in the resumption of sports activities. Rehabilitation also aims to minimize the risk of recurrence, which is why it ensures that the patient's muscular capacities develop properly until they return to sport. Isokinetics helps strengthen and assess the strength of muscle groups in the thigh, but controversy exists as to its use by resistance to the open kinetic chain knee extension that would cause the transplant to distend. The objective of this study is to determine the influence of isokinetic muscle strengthening on the possible laxity of the anterior cruciate ligament and to be able to determine risk factors. The study relates to a population having benefited from anterior cruciate ligament reconstruction with hamstring graft from 3 to 6 months after surgery. Two groups are differentiated, one group exposed to isokinetism during rehabilitation, the other group, named unexposed, undergoes rehabilitation without the use of isokinetism. An anterior knee laxity test is performed 6 months postoperatively using the GNRB® machine for all subjects according to the same protocol. The test results were statistically analyzed to determine a relative risk of transplant distension for each group in the study. Comparison of the results of each group by univariate analysis did not reveal any significant result. Multivariate analysis showed interactions in the two strata of the study. It was argued that the use of isokinetics seems to have no effect on the risk of developing distension for the majority of subjects in the exposed group. A tendency towards transplant protection was perceived for each variable except the age under 25 years (RRa = 1.07). The use of isokinetics does not appear to be a cause of transplant distension in patients undergoing an anterior cruciate ligament reconstruction when this method is introduced 3 months postoperatively.

Subject Areas

anterior cruciate ligament; open kinetic chain; laxity; isokinetic

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