Achilles tendon ruptures stratified by age, race, and cause of injury among active duty US military members

A total of 865 members of the U.S. military underwent repair of Achilles te ndon ruptures at U.S. military hospitals during calendar years 1994, 1995, and 1996. The discharge summaries of these patients were analyzed for patie nt demographic information, including age, race, and causative activity. Pa tients were then stratified by age, race, and cause of injury. Blacks were at increased risk for undergoing repair of the Achilles tendon compared wit h nonblacks (overall relative risk = 4.15, 95% confidence interval [CI] = 3 .63, 4.74; summary odds ratio controlling for age = 3.69, CI = 3.25, 4.19). Participation in the game of basketball accounted for 64.9% of all injurie s in black patients and 34.0% of all injuries in nonblack patients. Among t hose injured, blacks had a significantly increased risk for injury related to playing basketball than nonblacks (relative risk = 1.82, CI = 1.58, 2.10 ). This finding suggests that there may be other predisposing factor(s) tha t result in a higher risk of Achilles tendon ruptures in black individuals.