Scapholunate ligament

Scapholunate ligament is a ligament of the wrist that connects the scaphoid and lunate bones. It is one of the intrinsic ligaments of the wrist, meaning it is contained entirely within the wrist. The scapholunate ligament is critical for maintaining the integrity of the carpal structure and allowing for normal wrist movement.

Etymology

The term "scapholunate" is derived from the names of the two bones it connects: the scaphoid and the lunate. The word "scaphoid" comes from the Greek word "skaphos," meaning "boat," and the word "lunate" comes from the Latin word "luna," meaning "moon." The term "ligament" comes from the Latin word "ligamentum," meaning "a band or tie."

Anatomy

The scapholunate ligament is composed of three parts: the dorsal, proximal, and volar. The dorsal part is the strongest and most important for maintaining the relationship between the scaphoid and lunate bones. The proximal and volar parts are thinner and less important for stability.

Function

The primary function of the scapholunate ligament is to connect the scaphoid and lunate bones and maintain the alignment and integrity of the carpal structure. It also allows for normal wrist movement, including flexion, extension, adduction, and abduction.

Related Terms

• Scaphoid bone
• Lunate bone
• Carpal bones
• Wrist
• Ligament

See Also

• Scapholunate advanced collapse
• Scapholunate dissociation
• Scapholunate instability

References

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