Which wrist pain condition involves tenderness between the ulnar styloid and pisiform?

The condition characterized by tenderness between the ulnar styloid and the pisiform is a triangular fibrocartilage complex (TFCC) injury. The TFCC is a structure that provides support to the ulnar side of the wrist and is crucial for stability during wrist movements. When this structure is injured, pain is often felt on the ulnar aspect of the wrist, typically between the ulnar styloid and the pisiform bone, which is a key location for diagnosing this particular injury.

Patients with a TFCC injury may also experience pain during rotation of the wrist or wrist movement that involves ulnar deviation. This condition can result from acute injury or degeneration, particularly in athletes engaged in activities that require repetitive wrist movements.

The other conditions mentioned have different clinical presentations and locations of pain. De Quervain's tenosynovitis primarily causes pain at the radial aspect of the wrist, affecting the tendons of the first extensor compartment. Carpal tunnel syndrome presents with symptoms related to median nerve compression at the wrist, often causing pain and numbness in the thumb, index, and middle fingers rather than localized ulnar wrist pain. A wrist sprain could involve general wrist pain without a specific tender point between the