title: Isokinetic Identification of Knee Joint Torques before and after Anterior Cruciate Ligament Reconstruction.
abstract: The aim of this study was to evaluate the serial change of isokinetic muscle strength of the knees before and after anterior cruciate ligament reconstruction (ACLR) in physically active males and to estimate the time of return to full physical fitness. Extension and flexion torques were measured for the injured and healthy limbs at two angular velocities approximately 1.5 months before the surgery and 3, 6, and 12 months after ACLR. Significant differences (p ≤ 0.05) in peak knee extension and flexion torques, hamstring/quadriceps (H/Q) strength ratios, uninvolved/involved limb peak torque ratios, and the normalized work of these muscles between the four stages of rehabilitation were identified. Significant differences between extension peak torques for the injured and healthy limbs were also detected at all stages. The obtained results showed that 12 months of rehabilitation were insufficient for the involved knee joint to recover its strength to the level of strength of the uninvolved knee joint. The results helped to evaluate the progress of the rehabilitation and to implement necessary modifications optimizing the rehabilitation training program. The results of the study may also be used as referential data for physically active males of similar age.
authors.affiliation: Department of Biomechanics and Computer Science, Faculty of Physical Education and Sport, The Josef Pilsudski University of Physical Education, Biala Podlaska, Poland.
authors.forename: Adam
authors.initials: A
authors.lastname: Czaplicki
authors.affiliation: Department of Physiotherapy, Faculty of Tourism and Health, The Josef Pilsudski University of Physical Education, Biala Podlaska, Poland.
authors.forename: Marta
authors.initials: M
authors.lastname: Jarocka
authors.affiliation: Department of Medical Rehabilitation, Faculty of Tourism and Health, The Josef Pilsudski University of Physical Education, Biala Podlaska, Poland.|Department of General Surgery, Orthopaedic Surgery Unit, MSW Hospital, Lublin, Poland.
authors.forename: Jacek
authors.initials: J
authors.lastname: Walawski
mesh_terms: D000328:Adult; D016118:Anterior Cruciate Ligament / Q000503:physiopathology* / Q000601:surgery*; D006801:Humans; D007719:Knee Joint / Q000503:physiopathology*; D008297:Male; D019651:Plastic Surgery Procedures; D019415:Torque; D055815:Young Adult