Efficacy of Constraint-Induced Movement Therapy and mirror therapy in improving upper limb motor function and dexterity in post-stroke hemiparetic patients: a randomized controlled trial.

After a stroke, many people are left with weakness or clumsiness in one arm and hand, which can make everyday tasks difficult. Two rehabilitation approaches that try to address this are Constraint-Induced Movement Therapy, which involves restricting the unaffected arm to force use of the weaker one, and Mirror Therapy, which uses a mirror to create a visual illusion of normal movement in the affected limb. This trial compared both approaches against conventional therapy alone in 120 people with hemiparesis after stroke, over 40 days of treatment. Both Constraint-Induced Movement Therapy and Mirror Therapy led to statistically significant improvements in hand dexterity, motor function, and independence in daily activities compared with the control group receiving only conventional therapy.

There was no statistically significant difference between the two active therapies overall, though Constraint-Induced Movement Therapy showed a slightly greater effect on grip strength. The main limitation is that this is a single trial from one hospital setting, and longer-term outcomes and home-based feasibility remain unexplored.

If you or someone you know has weakness in an arm or hand after a stroke, this study looked at two additional therapy approaches that might help beyond standard rehabilitation. One method involves restricting the stronger arm to encourage use of the weaker one, while the other uses a mirror to create a visual trick that makes the brain perceive the affected limb moving normally. In this trial of 120 stroke survivors, both approaches led to better hand dexterity, strength, and ability to manage daily activities compared with people who received only standard therapy.

Neither approach clearly outperformed the other overall, though the arm-restriction method showed a slightly bigger benefit for grip strength specifically. It is encouraging that both structured add-on therapies showed benefit over standard care alone, but this comes from one trial at a single hospital, so we do not yet know how durable these gains are over the longer term, or whether either therapy could work well if done at home rather than in a clinical setting.

This is a summary of research, not medical advice. Talk to your own healthcare provider about anything affecting your care.

This trial addresses a practical question that comes up often in upper limb stroke rehabilitation: when conventional therapy alone is not producing enough gain in dexterity or function, does adding Constraint-Induced Movement Therapy or Mirror Therapy meaningfully help, and if so, is one preferable to the other? The trial randomised 120 post-stroke hemiparetic patients into three arms, CIMT, MT, and conventional therapy only, over a 40-day intervention period, assessing manual dexterity via the Nine Hole Peg Test, hand strength, and functional independence using the Barthel Index, Quick DASH, and Modified Rankin Scale. Both CIMT and MT groups showed statistically significant improvements relative to the control group across these outcome measures, supporting their use as add-on interventions rather than replacements for conventional care. When CIMT and MT were compared directly, no statistically significant difference emerged in overall efficacy, although CIMT showed a somewhat greater effect specifically on motor strength, a secondary comparison that should be read as exploratory rather than definitive. The main limitation for practice is that this is a single-centre trial with a 40-day timeframe, so durability beyond that window, generalisability to other settings, and feasibility of home-based delivery are not established by this data and remain open questions the authors themselves flag for future research.