Patient Care Β· 4 min read
Exercise as Medicine After Orthopaedic Surgery: The Evidence Is Compelling
Exercise is the most prescribed and least well-explained intervention in orthopaedic rehabilitation. Patients are handed exercise sheets and sent home without understanding why each exercise exists, what biological process it stimulates, and what doing it correctly versus incorrectly produces. That educational gap is one of the most correctable barriers to excellent surgical outcomes.
The evidence that structured, progressive exercise improves outcomes after orthopaedic surgery β in terms of patient-reported function, muscle strength recovery, range of motion, and return to activity β is as robust as the evidence for any pharmacological intervention in the rehabilitation literature. Exercise is medicine. The dose, timing, progression, and specificity of that medicine are as important as any prescription, and the clinician who prescribes rehabilitation exercises without explaining these parameters is offering an intervention without adequate instruction for its use.
Why exercise works at the biological level
Progressive resistance exercise stimulates muscle protein synthesis through the mTOR pathway, producing the muscle hypertrophy and strength gains that restore the force-generating capacity lost through disuse, pain inhibition, and surgical trauma. Tendon loading β applied progressively and at appropriate intensities β stimulates collagen synthesis and tenocyte proliferation, producing the structural adaptation that makes repaired tendons progressively more capable of withstanding the demands of daily life and sport.
The dose-response relationship in exercise is non-linear and context-dependent. Too little loading produces inadequate biological stimulus and slow recovery. Too much loading β particularly in the early healing phase β produces mechanical disruption of the repair and setback. The physiotherapist's most important skill in post-operative rehabilitation is calibrating the loading to the biological stage of healing β advancing when the tissue can tolerate it, restraining when it cannot.
Self-efficacy and exercise adherence
The patient who understands why they are doing each exercise β which structure is being loaded, what biological process is being stimulated, why the timing and repetitions matter β adheres to their programme with greater consistency and greater effort than the one following instructions they do not understand. Exercise adherence is the most important modifiable determinant of rehabilitation outcome after orthopaedic surgery, and the educational investment required to improve it is modest relative to its return.
Exercise is the most important prescription in post-operative orthopaedic care. Like every prescription, it works best when the patient understands what it is doing, why it matters, and what correct execution looks like.
π¬ How much time does your team invest in explaining the rationale for rehabilitation exercises to patients β and has improving that explanation measurably changed adherence or outcomes?