Radial carpal collateral ligament

The scaphoid bone is one of the small bones of the wrist known as carpals. It is between the hand and the forearm on the radial side (the side with the thumb). The scaphoid is about the size and shape of a cashew. The radial styloid process is located on the radius, a bone of the lower arm. This is a conical bump on the bone. The radial carpal collateral ligament connects the scaphoid bone and the radial styloid process. This ligament prevents the wrist from bending too far to the side away from the thumb. The scaphoid bone is difficult to break, but even so it is the most common fracture of the wrist. It is usually slow to heal, because of limited blood circulation. Damage to the bones can cause damage to the radial carpal collateral ligament. Improper healing of fractures in bones and stretched or torn ligaments is a primary cause of osteoarthritis. Arthritis itself can then cause further deterioration of the ligaments.
Written and medically reviewed by the Healthline Editorial Team
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In Depth: Radial carpal collateral ligament

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