Relação entre a força muscular e amplitude de movimento do punho sobre a dor no complexo de fibrocartilagem triangular em praticantes de crossfit®.

Abstract

Certain CrossFit® exercises, such as Olympic weightlifting and gymnastic movements, position the wrist in hyperextension, associated with high axial loads on the joint. This can result in pain and discomfort during performance, in addition to causing injuries to adjacent structures like the Triangular Fibrocartilage Complex (TFCC), a primary stabilizer and load-absorbing structure from the carpal bones to the ulna. TFCC injuries present risk factors such as decreased wrist range of motion and reduced grip strength. Objective: To identify the relationship between muscle strength and wrist range of motion in relation to pain in the TFCC among CrossFit® practitioners. This cross-sectional analytical observational study was conducted with 48 CrossFit® practitioners, who were evaluated through questionnaires and tests to measure wrist range of motion in hyperextension, followed by the assessment of grip strength using the Jamar dynamometer, and the strength of the wrist flexor and extensor muscles while participants hung from a fixed bar, supporting their body weight. Of the participants, 60.4% reported experiencing wrist pain during exercise. The range of motion of the wrist in hyperextension was significantly lower in patients with pain in both the right hand (p=0.004) and the left hand (p=0.012). This factor was found to be the most significant risk factor associated with pain in the TFCC. Physical Educators and Physiotherapists should consider this finding and implemente preventive measures to avoid future injuries in CrossFit® practitioners.