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The wrist joint is a condyloid synovial joint that connects and serves as a transition point between the forearm and hand. It allows for flexion, extension, abduction, and adduction movements.
The human hand has 27 bones, 27 joints, 34 muscles, over 100 ligaments and tendons, and nerves making it the most flexible part of the human skeleton.
The humerus is the longest upper extremity bone and defines the human brachium (arm). The humerus helps us perform many everyday activities, such as eating and lifting objects.
The radius is one of two long bones that make up the human forearm. The radius bone is important for the strength and motion of the forearm.
The ulna and the larger and stronger radius make up the forearm. Being longer and thinner, the ulna is often more easily fractured due to trauma.