Arcuate Ligament of the Wrist

Description

Diagram of the palmar “distal V” of the extrinsic ligaments. On the radial side, the radioscaphocapitate ligament (RSCL) extends distally next to a fascicle of the scaphocapitate ligament(SCL). On the ulnar side, the arcuate ligament (TCSL) extends to the triquetral, capitate, and scaphoid.

Names

• Arcuate Ligament of the Wrist
• Triquetrocapitoscaphoid Ligament (TCSL)
• Delta Ligament of the Wrist

Gross Anatomy

• Originates on the palmar side of the triquetrum
• Extends in a bow shape over the tip of the hamate, neck of the capitate
• Terminates on the palmer side of the distal third of the scaphoid

Function

• Permits the triquetrum to slide a considerable distance over the spiral-shaped joint surface of the hamate
• Prevents palmer flexion of the proximal carpal row

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Clinical Significance

• Needs to be updated

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See Also

• Wrist Pain Main
• Hand And Wrist Anatomy
• Physical Exam Hand

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