Differences in Musculoskeletal Injury and Disability Rates in U.S. Navy Sailors Aboard Aircraft Carrier and Amphibious Assault Ships.

This study evaluates the burden of musculoskeletal injuries (MSKI) among U.S. Navy Sailors assigned to large deck ships—specifically Aircraft Carriers (CVNs) and Amphibious Assault Ships (LHA/LHDs)—from 2016 to 2023, examining MSKI rates, short-term disability (restricted duty), and long-term disability. Findings indicate that Sailors aboard LHA/LHDs, those in homeport, and female Sailors experienced higher MSKI rates, while deployment status was significantly associated with increased short-term disability and return to full duty after restricted duty. Notably, CVNs have permanently assigned Navy Physical Therapists who provide specialized care and injury prevention programs, a resource typically absent on LHA/LHDs, which may contribute to the lower MSKI rates observed on CVNs. The study suggests that including physical therapists aboard LHA/LHDs could enhance early intervention and reduce MSKI impact, although no factors studied were linked to long-term disability.