Movement assessment is the practice of analyzing movement performance during functional tasks to determine the kinematics of individual joints and their effect on the kinetic chain. Three-dimensional or two-dimensional analysis of biomechanics involved in sports tasks can help prevent injuries and improve athletic performance. Identifying abnormal movement mechanics allows physiotherapists to prescribe more accurate corrective exercise programs to prevent injuries and improve rehabilitation and exercise progression after an injury, and help determine whether to return to work. sport.
LESS is a valid and reliable tool for the biomechanical evaluation of the jump landing technique. LESS involves the scoring of 22 biomechanical criteria for the lower extremity and the trunk, the results being associated with the risk of anterior cruciate ligament (ACL) and patellofemoral lesion. The LESS score is divided into the following categories: excellent (0-3); good (4-5); moderate (6-7); and poor (> 7). The identification of biomechanical anomalies in the landing technique, the effect of fatigue and the differences between the sexes allow more precise clinical interventions to reduce the risk of injury.
One leg squat is an exercise developed by Liebenson as part of a functional test to examine lower limb biomechanics, assess hip muscle dysfunction, and provide an indication of mechanics during functional tasks. daily. The test requires the person to be on the tested limb, with the non-bearing limb in about 45 degrees of hip flexion and about 90 degrees of knee flexion. The arms of the person must be at 90 ° of the flexion of the shoulder and the complete extension of the elbow. The athlete should squat at least 60 ° of knee flexion and return to the starting position within 6 seconds.
Single leg jump tests are commonly used to assess the functional performance of the knee by assessing limb symmetry following anterior cruciate ligament injury or following anterior cruciate ligament reconstruction. The mainly used hops tests are: single leg jump for distance; cross jump test; triple jump test; Timed hops test of 6 m; square hops test and hop test from one side to the other. The symmetry of the limbs is evaluated by the member symmetry index (LSI). Normal values for return to play criteria following ACL reconstruction indicate that the injured limb must be greater than or equal to 90% of the non-injured limb.