02342nas a2200325   4500000000100000008004100001653001100042653001100053653000900064653001600073653000900089653001400098653003000112653002400142653001400166653001100180653002000191653001700211653001600228100001400244700001300258700001600271700001500287245013400302250001500436300000900451490000700460520152700467020002201994       2012                            d10aFemale10aHumans10aAged10a80 and over10aMale10aPrognosis10aPredictive Value of Tests10aProspective Studies10aIncidence10aStroke10aHospitalization10aEpidemiology10aContracture1 aHarvey L.1 aDiong J.1 aHerbert Rob1 aChow Clara00aHalf of the adults who present to hospital with stroke develop at least one contracture within six months: an observational study  a2012/02/22  a41-70 v583 a<p>
QUESTIONS: What is the incidence of contractures six months after stroke? Can factors measured within four weeks of stroke predict the development of elbow, wrist, and ankle contractures six months later? DESIGN: Prospective cohort study. PARTICIPANTS: Consecutive sample of 200 adults with stroke admitted to a Sydney hospital. OUTCOME MEASURES: Loss of range of motion in major joints of the body was measured using a 4-point ordinal contracture scale. In addition, elbow extension, wrist extension, and ankle dorsiflexion range of motion were measured using torque-controlled procedures. Potential predictors of contracture were age, pre-morbid function, severity of stroke, muscle strength, spasticity, motor function, and pain. Measurements were obtained within four weeks of stroke and at six months after stroke. RESULTS: 52% of participants developed at least one contracture. Incidence of contracture varied across joints from 12% to 28%; shoulders and hips were most commonly affected. Muscle strength was a significant predictor of elbow, wrist, and ankle joint range. Prediction models explained only 6% to 20% of variance in elbow, wrist, and ankle joint range. CONCLUSION: About half of all patients with stroke develop at least one contracture within six months of stroke. Incidence of contractures across all joints ranged from 12% to 28%. Muscle strength is a significant predictor of elbow, wrist, and ankle contractures but cannot be used to accurately predict contractures in these joints.
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