Investigating the Efficacy of Osteopathic Manipulative Treatment on Gait Dysfunction Following Knee Surgery

For patients with a history of knee surgery, especially knee arthroplasty, the persistence of abnormal gait kinematics is a frequently encountered issue that can hinder their ability to return to normal daily living. Muscular imbalances and leg length discrepancy (LLD) following knee arthroplasty can impact a patient's ability to return to a normal gait pattern. In a study of 98 patients who underwent total knee arthroplasty, leg lengthening on the side of the operative knee was reported in 83% of patients as determined by comparing pre- and postoperative leg-length radiographs (Lang JE et al; J. Arthroplasty. 2012;27(3):341-346). LLD can lead to compensations in surrounding joints, muscles, and myofascial structures. Compensatory musculoskeletal changes, including changes in pelvic tilt and curvature of the lumbar spine can alter gait mechanics, lead to mechanical low back pain, and increase the risk of degenerative disc disease (Sheha EDM et al; J. Bone and Joint Surgery, Inc. 2018;6(8)(e6)). In addition, neurologic compensations can occur and include changes in muscular timing and muscular activation patterns. The mainstay of gait rehabilitation following knee surgery is physical therapy (PT) (O'Connor DP et al; J Orthop Sports Phys Ther. 2001;31(7):340-352), where LLD can be addressed with heel lift therapy. The use of Osteopathic Manipulative Treatment (OMT) to address chronic compensatory musculoskeletal changes following knee surgery in order to improve gait has not been extensively studied. Both OMT and PT have been shown to improve gait imbalances in a variety of neurological conditions such as Parkinson's disease, multiple sclerosis, and Prader-Willi syndrome. Previous studies of these neurologic conditions have demonstrated increases in walking velocity, step length, stride length and range of motion of the lower extremities following OMT. It remains to be determined whether OMT can improve gait pattern abnormalities caused by compensatory musculoskeleta