College of Massage Therapists of British Columbia (CMTBC) Practice Exam

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What is the expected range of extension at the radiocarpal joint?

70-90 degrees
0-10 degrees
20-30 degrees
80-90 degrees

The correct answer is: 70-90 degrees

The expected range of extension at the radiocarpal joint is indeed typically around 70-90 degrees. This joint, also known as the wrist joint, plays a crucial role in the extension of the hand and wrist, allowing for a significant range of motion in various activities, including reaching and grasping. The ability to extend the wrist is essential for many functional tasks, and the range of motion can vary based on individual anatomical differences, flexibility, and any existing joint pathologies or injuries. While other ranges listed may reflect different wrist movements or misinterpretations of anatomical measurements, the consensus among biomechanical studies indicates that the typical extension achieved at the radiocarpal joint aligns with the established range of around 70 to 90 degrees in healthy individuals. This range is important for activities requiring wrist extension, highlighting the joint's functionality in daily tasks and fine motor control.