2024年1月12日 · Thumb Collateral Ligament Injuries, most commonly ulnar collateral (UCL), are athletic injuries that lead to a decrease in effective thumb pinch and grasp. Diagnosis relies upon thumb MCP radial-ulnar stress exam and MRI studies.

Injuries to the radial collateral ligament (RCL) of the thumb are thought to be relatively uncommon, especially when compared to the ulnar collateral ligament. However, the radial collateral ligament is increasingly recognized as critical for the overall …

Injuries to the collateral ligaments of the thumb metacarpophalangeal (MP) joint, which range from mild sprains to complete ruptures, are among the most common injuries of the hand. The majority of these injuries involve the ulnar collateral ligament (UCL), while radial collateral ligament (RCL) injuries occur far less frequently.

By enlarge, injury to the ulnar collateral ligament (UCL) is more common than the radial collateral ligament (RCL) accounting for 60–90% of ligamentous collateral injury cases at the MCP joint of the thumb [1]. This review will outline the relevant clinical anatomy, mechanisms of injury, and treatment options available.

If the ligament has ruptured or the elbow was dislocated during the event of the injury, surgery may be required. For an RCL injury where the ligament was strained or pulled, resting, …

2007年12月17日 · Not only does the intact RCL help prevent volar subluxation, but it also acts as a tension band against the adductor expansion, converting translational forces into compressive forces. With rupture of the RCL, instead of compression at the MCP joint, one may get translation ulnarly, leading to articular deterioration.

2008年5月1日 · Radial collateral ligament (RCL) injuries of the thumb are relatively common although they are less common than ulnar collateral ligament injuries, which make up 10% to 42% of collateral ligament injuries of the thumb. The RCL is especially important for pinch movements and for movements of depression.

The ulnar collateral ligament (blue arrows) demonstrates proximal edema but is intact. On the 3rd image, attenuated midsubstance radial collateral ligament (RCL) fibers are present (red arrowhead). A fluid filled gap is present at the normal distal insertion site of the RCL on the final provided slice (red arrowhead).

A Radial Collateral Ligament (RCL) of the Thumb Injury refers to interruption of the ligament on the radial side of the metacarpophalangeal joint. This typically occurs due to trauma on the radial side of the thumb with active abduction.

Although traditionally thought to respond well to conservative management, especially when compared to injuries to the ulnar collateral ligament, there is mounting evidence that chronic RCL injury leads to thumb metacarpophalangeal joint instability and …