• Sports with a Bat or Racket are Not Associated with Thumb-base Osteoarthritis

      Driban, Jeffrey B; Lo, Grace H; Roberts, Mary B; Harkey, Matthew S; Schaefer, Lena; Haugen, Ida K; Smith, Stacy E; Duryea, Jeffrey; Lu, Bing; Eaton, Charles B; et al. (Allen Press, 2021-08-17)
      Context: Repetitive joint use is a risk factor for osteoarthritis, which is a leading cause of disability. Sports requiring a bat or racket to perform repetitive high-velocity impacts may increase the risk of thumb-base osteoarthritis. However, this hypothesis remains untested. Objective: To determine if a history of participation in racket or bat sports is associated with the prevalence of thumb-base osteoarthritis. Design: Descriptive epidemiology study. Setting: Osteoarthritis Initiative. Four clinical sites in the United States. Participants: We included men and women from the recruited from the community. Eligible participants had dominant hand radiographic readings, hand symptom assessments, and historical physical activity survey data. Main outcome measures: A history of exposure to racket or bat sports (baseball/softball, racquetball/squash, badminton, table tennis, tennis [doubles/singles]) was based on self-reported recall data covering 3 age ranges (12-18 years, 19-34 years, 35-49 years). Prevalent radiographic thumb-base osteoarthritis was defined as someone with Kellgren-Lawrence grade≥2 in the first carpometacarpal joint or scaphotrapezoidal joint at the OAI baseline visit. Symptomatic thumb-base osteoarthritis was defined as the presence of radiographic osteoarthritis and hand/finger symptoms. Results: In total, we included 2309 participants. Among 1049 men, 355 (34%) and 56 (5%) had radiographic or symptomatic thumb-base osteoarthritis, respectively; and among 1260 women, 535 (42%) and 170 (13%), respectively. After adjusting for age, race, and education level, we found no statistically significant associations between a history of any racket or bat sport participation and thumb-base osteoarthritis (radiographic or symptomatic; odds ratios range from 0.82 to 1.34). Conclusions: Within a community-based cohort, a self-reported history of participation in racket or bat sports was not associated with an increased odds of having radiographic or symptomatic thumb-base osteoarthritis in the dominant hand.