Stener lesion

Case contributed by Henry Knipe
Diagnosis certain


Painful thumb.

Patient Data

Age: 30 years
Gender: Male

Displaced avulsion fracture at the ulnar aspect of the distal first phalanx. Normal alignment. 

One month later


Subluxation of the first metacarpophalangeal joint.

Complete tear of the ulnar collateral ligament at the first metacarpophalangeal joint with fibers retracted proximally lying superficial to the level of the abductor pollicis aponeurosis/tendon, compatible with a Steiner lesion. The small avulsion fracture seen on the prior x-ray is not confidently identified.

Small proximal partial tear of the radial collateral ligament. Marrow edema at the first metacarpal head, predominantly on the volar aspect with a small further focus of marrow edema within the ulnar aspect of the first proximal phalanx base at the ulnar collateral ligament insertion. Additionally at the first metacarpophalangeal joint, there is a small joint effusion, capsular sprain, and mild edema of the sesamoids.

Flexor and extensor tendons are intact without tenosynovitis.

Case Discussion

This is an example of complete rupture of the first metacarpophalangeal joint ulnar collateral ligament with a Stener lesion.

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.