Efficacy of Strengthening Intervention on Balance and Quality of Life in Patients with Knee Osteoarthritis Associated with Instability: A Case Series

Osteoarthritis (OA) is a progressive degenerative condition that affects joint cartilage and leads to ligamentous instability, significantly impairing balance and functional mobility. The deterioration of intra-articular ligaments, particularly the anterior cruciate ligament (ACL) and medial collateral ligament (MCL), alters joint mechanics, contributing to instability and accelerating disease progression. Despite the growing recognition of ligament involvement in OA, there remains a gap in research addressing its impact on functional limitations and rehabilitation strategies. This study aims to evaluate the efficacy of physiotherapy interventions, specifically targeted strengthening exercises, in mitigating knee instability and improving functional outcomes in individuals with OA.

A case series study design has been employed to assess patients diagnosed with Stage 2 or Stage 3 knee OA, accompanied by ligament laxity, within the age group of 45–65 years. Participants undergo a structured three-phase rehabilitation program spanning three months, incorporating strengthening exercises, neuromuscular training, and proprioceptive balance training. The intervention follows a progressive approach, beginning with pain and inflammation management, followed by muscle activation, and culminating in advanced strengthening and functional retraining. A combination of in-person assessments and telerehabilitation sessions ensures continuous monitoring and patient adherence.

The study aims to determine whether offloading stress from affected ligaments while strengthening the surrounding musculature can improve knee stability, reduce pain, and enhance overall quality of life. Expected outcomes include improved balance, reduced functional limitations, and a slowed rate of disease progression. By bridging the gap between ligament instability and OA management, this research contributes to evidence-based physiotherapy practices, optimizing rehabilitation strategies for better patient outcomes. The findings will offer valuable insights into holistic OA treatment approaches, integrating ligament strengthening into conventional management to enhance long-term mobility and independence.