Radial Collateral Ligament of the Wrist
(Redirected from Radial collateral ligament of the wrist)
Description
Names
- Radial Collateral Ligament of the Wrist
- External Lateral Ligament
- Radial Carpal Collateral Ligament
- Radioscaphoid Ligament
General
- Extrinsic, intracapsular radiocarpal ligament
- Radial stabilizer of the wrist[3]
Gross Anatomy
- Origin: Tip of the styloid process of the radius
- Insertion: radial side of the scaphoid, trapezium
- Runs in a fan-shaped, longitudinal orientation
- Forms the most radial part of the radiocarpal joint capsule
- Located deep to abductor pollicis longus, extensor pollicis brevis tendons
Function
- Limit ulnar deviation of the wrist
Ultrasound Features
- Place transducer at the radial side of a pronated wrist with mild ulnar deviation
- In long axis, the ligament appears as echogenic and fibrillar attaching distal radius to scaphoid[4]
MRI Features
- Appears as a linear, low signal structure extending from radius to scaphoid
- Best seen on coronal images or with arthrography
Clinical Significance
- Nondissociative carpal instability (CIND)
See Also
References
- ↑ Case courtesy of Matt Skalski, Radiopaedia.org, rID: 43845
- ↑ Image courtesy of teachmeanatomy.info
- ↑ Mayfield J, Johnson R, Kilcoyne R. The Ligaments of the Human Wrist and Their Functional Significance. Anat Rec. 1976;186(3):417-28
- ↑ Türker T, Sheppard J, Klauser A, Johnston S, Amerongen H, Taljanovic M. The Radial and Ulnar Collateral Ligaments of the Wrist Are True Ligaments. Diagn Interv Radiol. 2019;25(6):473-9.