Assessment of hip joint mechanics during walking in people with Marfan syndrome.

The study compared groups at one time, so it cannot show whether the walking differences caused hip pain or developed because of it. Most participants with Marfan syndrome were female, so the results may not represent men with the condition. The Marfan group was older than the control group, although the analysis adjusted for age. The study looked only at level walking, so it may miss mechanics during more demanding tasks. The controls were healthy people from a local laboratory database, not a broad community sample. No intervention was tested, so the paper does not show that changing gait improves outcomes.

The article is tagged as NIH extramural research support, and the authors declared no conflicts of interest.

Do not read these walking differences as proof that hip pain is caused by altered mechanics. The study measured people once and did not test whether changing gait changes pain.