Knee osteoarthritis affects tens of millions of adults globally, and the dominant clinical assumption has long been that managing pain at the joint level is the primary goal. A growing body of evidence now challenges that premise — suggesting that upstream biomechanical dysfunction, particularly in the lumbopelvic region and hip musculature, may be as important to address as the knee itself. This reframing carries real implications for how physical therapists design rehabilitation programs and how patients understand their own recovery trajectories.
A systematic review published in Cureus synthesized findings from 18 randomized controlled trials published between 2016 and 2026, evaluating physical therapy-based realignment strategies for knee osteoarthritis (KOA). The review, conducted according to PRISMA guidelines and assessed for methodological quality using the Cochrane Collaboration's Risk of Bias 2 tool, found that realignment-focused interventions — spanning conditioning exercises, manual therapy, and kinetic chain approaches — produced significant improvements in both pain reduction and functional outcomes. Central to this framework is lumbopelvic stability: when pelvic drop occurs due to hip abductor or core weakness, medial compartment loading at the knee increases, accelerating cartilage degradation. Addressing that proximal dysfunction appears to meaningfully reduce those compressive forces.
This review sits within a maturing paradigm in musculoskeletal medicine that treats joints not as isolated structures but as nodes in an interconnected mechanical system. Hip strengthening and neuromuscular retraining have individually shown promise in earlier trials, but synthesizing 18 RCTs into a single quality-assessed framework adds meaningful weight to the clinical argument. That said, several limitations temper enthusiasm: the review does not provide pooled effect sizes or meta-analytic statistics, which limits quantitative conclusions. Trial heterogeneity in population severity, intervention duration, and outcome measurement tools is a common challenge in this literature. Additionally, most KOA trials enroll patients in their 40s and 50s, leaving evidence gaps for older cohorts where comorbidities complicate rehabilitation response. Overall, this review is best characterized as confirmatory and consolidating — it reinforces an evidence-based shift already underway in physical therapy practice rather than introducing a paradigm-breaking discovery.
