Defining the Minimal Clinically Important Difference (MCID), Patient Acceptable Symptom State (PASS), and Maximal Outcome Improvement (MOI) values for individuals with acetabular dysplasia (AD) undergoing non-operative management.
Ashley E Disantis, Tom Ellis, Robert Kollmorgen and 5 others
New iHOT-12 benchmarks for hip dysplasia after 8–10 weeks of physiotherapy: a gain of 8.5 points is meaningful, yet only 29% of patients felt their hip function was satisfactory.
Improvement is common; full satisfaction is not.
Key findings
1The study defined four clinically important outcome thresholds for the iHOT-12 in acetabular dysplasia patients after 8–10 weeks of PT: MCID 8.5 points, PASS change score 15.2, absolute PASS threshold 62, and MOI 22.9%.
264.4% of participants achieved the MCID, but only 37.8% reached the PASS change score.
3Only 13 of 45 participants (28.9%) reported being satisfied with their current hip function after the PT trial; 32 (71.1%) were not.
to read the rest of this summary — three full summaries a month, no card.
Already have an account?
What it does not show
Physiotherapy was not standardized — patients used their own PT providers, so the specific exercises, dosage, and approaches varied widely across the 45 participants. The sample was 45 people, 42 of them female, mean age 16.5 years. This tells you little about older patients, males with AD, or those with more severe deformity. Data came from two specialized hip-preservation centers, which may not reflect what happens in a community PT clinic or a general orthopedic practice. The thresholds only apply to an 8–10-week PT trial for a specific AD population; they may not hold for longer rehabilitation periods, different hip conditions, or patients not seen by a hip-preservation surgeon. The satisfaction anchor question was chosen by the study team rather than validated independently, and the study could not define a smallest clinically better (SCB) value.
Declared interests
The authors declared no conflicts of interest related to this research.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →