Longitudinal interaction between muscle impairments and gait pathology in growing children with Duchenne muscular dystrophy.
Ines Vandekerckhove, Geert Molenberghs, Marleen Van den Hauwe and 5 others
PMID 41034979WHAT IT FOUND
Weakness in the hips and knees tracked closely with specific changes in walking patterns over time.
This confirms that anterior pelvic tilt links to hip weakness, while tiptoeing links to knee weakness. Preserving these strengths may delay the need for compensatory movements.
Key findings
01Hip extension weakness was associated with increased anterior pelvic tilt and posterior trunk lean, supporting the idea that these are compensatory mechanisms.
02Knee extension weakness was strongly associated with reduced knee extension moments and tiptoeing gait, suggesting tiptoeing compensates for weak quadriceps.
03Loss of ankle dorsiflexion range of motion was more strongly associated with reduced dorsiflexion at initial contact than ankle weakness was.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
Read the rest of this summary
You get three full summaries a month, free, and we do not ask for a card. Search, the TL;DRs and your library stay unlimited either way.
What it does not show
The sample size was small (31 boys), and the study was exploratory without correction for multiple comparisons. Participants had varying levels of treatment, including corticosteroids, clinical trial medications, AFOs, and serial casting, which may influence gait and muscle outcomes independently of the disease progression. Muscle strength was measured statically (isometric), while gait was measured dynamically, which may not fully capture how weakness affects movement during walking. Data collection varied in frequency and duration between participants, and some measurements were missing due to age or cooperation issues.
Declared interests
The study was funded by the Research Foundation – Flanders (FWO-Vlaanderen) and the Duchenne Parent Project NL. The authors declared no conflicts of interest.
The easy way to misread this
Do not interpret these associations as proof of causation. The study shows that weakness and gait changes occur together, but it cannot prove that treating the weakness will reverse the gait pattern, especially given the simultaneous decline of multiple impairments and the influence of treatments like steroids and orthoses.
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 →