Recovery of preoperative absolute knee extension and flexion strength after ACL reconstruction

The recovery of muscle function after an Anterior Cruciate Ligament (ACL) reconstruction is most commonly reported as limb-to-limb differences using the Limb Symmetry Index (LSI), which is not free from limitations. The purpose of this study was to compare the proportion of patients who recover thei...

Full description

Saved in:

Bibliographic Details
Published in:	BMC sports science, medicine & rehabilitation Vol. 12; no. 1; p. 77
Main Authors:	Piussi, Ramana, Broman, Daniel, Musslinder, Erik, Beischer, Susanne, Thomeé, Roland, Hamrin Senorski, Eric
Format:	Journal Article
Language:	English
Published:	England BioMed Central Ltd 10-12-2020 BioMed Central BMC
Subjects:	adult Anterior cruciate ligament anterior cruciate ligament reconstruction clinical evaluation controlled study Evaluation female hamstring muscle human Idrottsvetenskap Joint and ligament injuries Knee Ligaments Limb symmetry index major clinical study male Medical research Medicine, Experimental Muscle function muscle strength Neurosciences Neurovetenskaper Orthopedic surgery outcome assessment patient-reported outcome Patients preoperative evaluation quadriceps femoris muscle Recovery (Medical) Rehabilitation remission Sport and Fitness Sciences Surgery torque Sweden Knee Evaluation Limb symmetry index Anterior cruciate ligament
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	The recovery of muscle function after an Anterior Cruciate Ligament (ACL) reconstruction is most commonly reported as limb-to-limb differences using the Limb Symmetry Index (LSI), which is not free from limitations. The purpose of this study was to compare the proportion of patients who recover their Preoperative Absolute Muscle Strength (PAMS) 8 and 12 months after ACL reconstruction with the proportion of patients who recover their symmetrical knee strength. A secondary aim was to assess the relationship between psychological Patient-Reported Outcomes (PROs) and recovering PAMS at 8 and 12 months after ACL reconstruction and rehabilitation. Preoperative, 8- and 12-month results from quadriceps and hamstring strength tests and PROs for 117 patients were extracted from a rehabilitation registry. Individual preoperative peak torques from strength tests were compared with results from the 8- and 12-month follow-ups respectively. Patients were defined as having recovered their PAMS upon reaching 90% of their preoperative peak torque for both quadriceps and hamstring strength. Patients were defined as having recovered their LSI upon reaching a value ≥90% when comparing the results for their injured knee with those of their healthy knee. Correlations between the recovery of PAMS and PROs at 8 and 12 months were analyzed. There was no difference in the proportion of patients who recovered their PAMS compared with patients who recovered their LSI. In all, 30% and 32% of the patients who recovered their LSI had not recovered their PAMS at 8 months and 12 months respectively. In the patients who had recovered their PAMS, 24% and 31% had not recovered their symmetrical LSI at 8 months and 12 months respectively. There was no significant correlation between the recovery of PAMS and psychological PROs. The use of both PAMS and LSI provides more detailed information on the recovery of muscle strength after ACL reconstruction. The recovery of PAMS was not correlated with psychological traits, which implies that both PROs and PAMS are important when evaluating patients after ACL reconstruction. This trial was not registered.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	2052-1847 2052-1847
DOI:	10.1186/s13102-020-00222-8