Effect of baseline values on inpatient rehabilitation outcomes after total knee arthroplasty: a retrospective observational study.
Martin Missmann, Michael J Fischer
PMID 39849999WHAT IT FOUND
Patients entering knee rehab with the worst mobility and self-reported scores improved the most, but those starting with the best scores also improved.
Baseline values did not predict who would benefit, so all patients should receive standard inpatient rehabilitation regardless of initial severity.
Key findings
01Patients in the worst baseline quartile showed greater improvement in all scores than those in the best quartile, but both groups improved significantly.
02Baseline knee range of motion and Timed Up and Go scores were not useful for predicting functional rehabilitation outcomes or patient satisfaction.
03All patients benefited from inpatient rehabilitation regardless of sociodemographic factors or baseline performance measures, provided they were not frail.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
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What it does not show
The study was retrospective, which may introduce bias in how patients were selected and grouped. There was no control group of patients who did not receive inpatient rehabilitation, so the study cannot prove inpatient rehab is superior to home-based care. Frail patients and those with mental impairment were excluded, so the findings do not apply to these groups. Patients were grouped by outcome values rather than randomised, which limits causal inference about which factors predict success. Follow-up was only to discharge; long-term outcomes at 6 or 12 months were not assessed.
Declared interests
The authors declared no conflicts of interest.
The easy way to misread this
Do not interpret the greater improvement in the worst-performing quartile as evidence that only these patients need inpatient rehabilitation. The best-performing patients also improved significantly, and the study did not compare inpatient rehabilitation to any alternative treatment.