Radioscapholunate Ligament

Description

Palmar radiocarpal ligaments are illustrated. The radioscapholunate ligament is marked on the left

Name

• Radioscaphocapitate Ligament

General

• Large, intracapsular, extrinsic palmer radiocarpal ligament
• Palmer stabilizer of the wrist joint

Gross Anatomy

• Origin: palmar surface of the distal radius
• Insertion: scaphoid, capitate
• Runs in an oblique orientation, contributing to the radial and radiocarpal joint capsule
• Runs adjacent and parallel to volar radiotriquetral ligament

Ultrasound Features

• Transducer: volar aspect of radial side of wrist, slightly extended
• Start in longitudinal plane and rotate towards capitate
• Ligament appears as echogenic, fibrillary structure attaching distal radius to lunate, capitate

MRI Features

• Best appreciated on coronal or sagittal cuts
• Appearance is hypointense, striated
• Interligament sulcus can be delineated as a fluid intense structure

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Clinical Significance

• Nondissociative Carpal Instability (CIND)
• Midcarpal Instability (MCI)

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See Also

• Wrist Anatomy Main
• Physical Exam Wrist
• Wrist Pain Main

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