Perceived Structural Change Influences Manual Therapy Outcomes

Manual therapy is widely used in physical rehabilitation and includes a broad range of hands-on techniques such as joint mobilization and manipulation, massage, passive movement, dry needling, and soft tissue or neural mobilization. While traditionally defined as the skilled application of mechanical force to reduce pain and improve movement, more recent perspectives emphasize manual therapy as a patient-centred, iterative clinical reasoning process that values shared decision-making and patient experience. Despite its strong presence in clinical guidelines and high patient expectations, its underlying mechanisms remain incompletely understood.

Research suggests that manual therapy works through multiple interacting mechanisms, not purely mechanical ones. Evidence supports neurologically mediated responses involving the nervous, cardiovascular, endocrine, immune, and musculoskeletal systems, alongside short-term biomechanical effects. At the same time, growing research highlights the importance of contextual and psychosocial influences, such as patient expectations, therapeutic alliance, and meaning attributed to touch. However, little is known about how patients themselves understand how manual therapy works.

This qualitative study explored patients’ beliefs about manual therapy mechanisms in adults receiving physical therapy for musculoskeletal conditions. Through semi-structured interviews, researchers found that patients were far more likely to describe outcomes (for example, less pain or better movement) than mechanisms (how those changes occur). Three overarching themes emerged in patients’ explanations: mechanical, neurophysiological, and psychological effects.

Mechanical explanations dominated. Most participants believed manual therapy works by physically altering tissues or structures—such as “realigning” joints, breaking up scar tissue, increasing space between structures, or improving circulation through pressure and movement. These beliefs reflect long-standing biomedical models but are largely inconsistent with contemporary evidence showing that manual therapy does not produce lasting structural realignment or tissue deformation.

Neurophysiological explanations were less common but included ideas such as blocking pain signals, stimulating nerves, releasing endorphins, or improving motor control and sensation. Some participants intuitively referenced concepts similar to pain gating, though many struggled to explain how these nervous system effects actually occur. A smaller group believed manual therapy could restore nerve function or regenerate neural tissue—mechanisms that are not well supported by current evidence and remain largely speculative.

Psychological effects formed the third theme and included increased confidence to move, reduced fear, improved well-being, and a greater sense of being cared for. Participants often described manual therapy as reassuring, calming, and motivating, helping them feel safer to move despite pain. These responses align with concepts such as self-efficacy, reduced fear avoidance, and therapeutic alliance, which are known to influence rehabilitation outcomes. Importantly, participants valued the hands-on nature of manual therapy and viewed touch as a meaningful expression of care, empathy, and professionalism.

Overall, the study highlights a disconnect between contemporary scientific understanding and patients’ beliefs about manual therapy.

Beliefs that manual therapy produces structural change strongly shape how its outcomes are perceived. Awareness of these beliefs is important for clinicians when selecting, delivering, and explaining manual therapy interventions.

The findings suggest that clinicians may benefit from explicitly discussing not just what manual therapy does, but how it works, helping patients move beyond outdated structural explanations toward a more accurate and empowering understanding of recovery.