Scapholunar is a medical term used to describe an anatomical structure or condition related to the scaphoid bone and the lunate bone in the wrist joint. The term derives from the fusion of the words "scaphoid" and "lunate". The scaphoid bone, also known as the navicular bone or os scaphoideum, is one of the eight small carpal bones located on the radial side of the wrist. The lunate bone, also known as the semilunar bone, is another carpal bone located adjacent to the scaphoid bone on the radial side.
The scapholunar joint is the articulation between the scaphoid and lunate bones. It plays a crucial role in wrist movement and stability. However, scapholunar injuries or abnormalities can cause pain, limited range of motion, and dysfunction in the wrist joint.
Scapholunar instability or dissociation refers to the condition where there is an abnormal separation or movement between the scaphoid and lunate bones due to ligamentous damage or fractures. This instability can lead to chronic wrist pain, weakness, and functional impairment.
Scapholunar arthrodesis is a surgical procedure performed to fuse the scaphoid and lunate bones together. This fusion aims to stabilize the wrist, relieve pain, and restore function in cases of severe scapholunar instability or degenerative conditions.
Overall, the term "scapholunar" in medicine refers to the scaphoid and lunate bones in the wrist joint, as well as conditions or procedures related to these structures.
