Monitoring hamstring and quadriceps strength using handheld dynamometry in patients after ACL reconstruction: A prospective longitudinal study.

Unlabelled: Strength data can help in guiding the return to sports (RTS) process in patients after an anterior cruciate ligament reconstruction (ACLR). There is need for a fast, cheap, and portable method to monitor muscle strength in patients after ACLR in an ambulatory stetting. Therefore, the purpose of the current study was to assess the use of a hand-held dynamometer (HHD) to monitor hamstring and quadriceps strength after ACLR and to assess the changes over time in patients tested at 3, 6 and 9 months after ACLR.