Grant E Norte1, John W Goetschius2, Lindsay V Slater3, Joseph M Hart4,5. 1. Athletic Training Program, School of Exercise and Rehabilitation Sciences, University of Toledo, Toledo, Ohio. 2. Exercise Science & Athletic Training Department, Adrian College, Adrian, Michigan. 3. Neuromechanics of Impaired Locomotion Lab, Shirley Ryan AbilityLab, Chicago, Illinois. 4. Department of Kinesiology, Sports Medicine Program, University of Virginia, Charlottesville, Virginia. 5. Sports Medicine Division, Department of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia.
Abstract
OBJECTIVE: To identify the frequency of passing return-to-activity tests after anterior cruciate ligament reconstruction (ACLR) and to investigate the influence of patient-specific factors on pass rates. We hypothesized that isolated strength tests would be most difficult to pass and that graft type would be the most influential factor. DESIGN: Cross-sectional. SETTING: Laboratory. PARTICIPANTS: Eighty patients with a history of primary, unilateral ACLR, and 80 healthy controls participated. INTERVENTIONS: Bilateral isokinetic strength, isometric strength, and single-leg hop tests were recorded during a single visit. The International Knee Documentation Committee (IKDC) Subjective Knee Evaluation measured subjective knee function, and the Tegner Activity Scale measured physical activity level. MAIN OUTCOME MEASURES: Pass rates were calculated for 3 thresholds of absolute between-limb asymmetry: 0% to 10%, 11% to 15%, and 16% to 20%. Pass rates were compared by sex (male and female), graft type (patellar and hamstrings), meniscal procedure (yes and no), physical activity level (</≥ median Tegner), and time from surgery (</≥ 6 months). RESULTS: Isokinetic quadriceps strength was consistently most difficult to pass, whereas the 6-meter timed hop and crossover hop tests were easiest. Graft type had the greatest influence on pass rates (isometric quadriceps and hamstring strength, hamstrings-to-quadriceps ratio), followed by time from surgery (6-meter timed hop and crossover hop), physical activity (IKDC), and meniscal procedure (6-meter timed hop). CONCLUSIONS: Isokinetic quadriceps strength was the most difficult test to pass, and single-leg hop tests were the easiest. Patient-specific factors including graft type, time from surgery, physical activity level, and meniscal procedure may influence the ability to meet return-to-activity criterion after ACLR.
OBJECTIVE: To identify the frequency of passing return-to-activity tests after anterior cruciate ligament reconstruction (ACLR) and to investigate the influence of patient-specific factors on pass rates. We hypothesized that isolated strength tests would be most difficult to pass and that graft type would be the most influential factor. DESIGN: Cross-sectional. SETTING: Laboratory. PARTICIPANTS: Eighty patients with a history of primary, unilateral ACLR, and 80 healthy controls participated. INTERVENTIONS: Bilateral isokinetic strength, isometric strength, and single-leg hop tests were recorded during a single visit. The International Knee Documentation Committee (IKDC) Subjective Knee Evaluation measured subjective knee function, and the Tegner Activity Scale measured physical activity level. MAIN OUTCOME MEASURES: Pass rates were calculated for 3 thresholds of absolute between-limb asymmetry: 0% to 10%, 11% to 15%, and 16% to 20%. Pass rates were compared by sex (male and female), graft type (patellar and hamstrings), meniscal procedure (yes and no), physical activity level (</≥ median Tegner), and time from surgery (</≥ 6 months). RESULTS:Isokinetic quadriceps strength was consistently most difficult to pass, whereas the 6-meter timed hop and crossover hop tests were easiest. Graft type had the greatest influence on pass rates (isometric quadriceps and hamstring strength, hamstrings-to-quadriceps ratio), followed by time from surgery (6-meter timed hop and crossover hop), physical activity (IKDC), and meniscal procedure (6-meter timed hop). CONCLUSIONS:Isokinetic quadriceps strength was the most difficult test to pass, and single-leg hop tests were the easiest. Patient-specific factors including graft type, time from surgery, physical activity level, and meniscal procedure may influence the ability to meet return-to-activity criterion after ACLR.
Authors: Meredith Chaput; Marcus Palimenio; Brooke Farmer; Dimitrios Katsavelis; Jennifer J Bagwell; Kimberly A Turman; Chris Wichman; Terry L Grindstaff Journal: Int J Sports Phys Ther Date: 2021-02-01
Authors: Atle Hole Saeterbakken; Tom Erik J Solstad; David G Behm; Nicolay Stien; Matthew Peter Shaw; Helene Pedersen; Vidar Andersen Journal: Eur J Appl Physiol Date: 2020-08-27 Impact factor: 3.078