In karate the finishing blow is known as Todome-waza, and it is explained as a technique that gives the power to a person to destroy or completely paralyze their opponent. This maneuver is often performed with the hand in a fist position. Karate knuckle is a tear of the metacarpophalangeal (MCP) joint capsule that occurs while punching. Because of the nature of karate, karate knuckle tends to be a chronic condition and often is associated with sagittal band rupture.
In karate it is also important to maintain the wrist position extension during self-defense (Ukemi) and ulnar deviation during chopping. Triangular fibrocartilage complex (TFCC) and scapholunate (SL) ligament injuries can easily occur with these positions.
Sometimes a finger injury such as mallet finger with or without a fracture can occur during a spearing (Tsuki) technique with finger extension.
Triangular Fibrocartilage Complex (TFCC) Scapholunate (SL) Sagittal Band Rupture Finger Injuries Fist Position
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