Medical expert of the article
New publications
Rupture of the lateral ligaments of the I metacarpophalangeal joint: causes, symptoms, diagnosis, treatment
Last reviewed: 05.07.2025
All iLive content is medically reviewed or fact checked to ensure as much factual accuracy as possible.
We have strict sourcing guidelines and only link to reputable media sites, academic research institutions and, whenever possible, medically peer reviewed studies. Note that the numbers in parentheses ([1], [2], etc.) are clickable links to these studies.
If you feel that any of our content is inaccurate, out-of-date, or otherwise questionable, please select it and press Ctrl + Enter.
ICD-10 code
S63.4 Traumatic rupture of ligament of finger at level of metacarpophalangeal and interphalangeal joint(s).
What causes a rupture of the collateral ligaments of the first metacarpophalangeal joint?
Rupture of the lateral ligaments of the first metacarpophalangeal joint usually occurs in athletes during unsuccessful attempts to perform exercises on gymnastic apparatus and is the result of forced excessive abduction of the first finger. The ligament located on the side facing the second finger is most often damaged.
Symptoms of rupture of the lateral ligaments of the first metacarpophalangeal joint
The patient complains of pain and dysfunction of the first finger following the injury.
Diagnosis of rupture of the lateral ligaments of the first metacarpophalangeal joint
Anamnesis
The anamnesis shows a characteristic injury.
Inspection and physical examination
The finger and hand in the area of the eminence of the first finger are sharply swollen. Active and passive movements in the metacarpophalangeal joint are limited due to pain and swelling of the surrounding tissues. After anesthesia or several days after the injury, excessive deviation and dislocation of the first finger can be detected. Opposition of the finger is impossible.
Laboratory and instrumental studies
On radiographs, one can see a rupture of the cortical plate (if the ligament is torn) or a subluxation of the finger.
[ Treatment of rupture of the lateral ligaments of the first metacarpophalangeal joint
Conservative treatment of rupture of the lateral ligaments of the first metacarpophalangeal joint
Conservative treatment of rupture of the lateral ligaments of the first metacarpophalangeal joint is prescribed for fresh injuries. It consists of fixing the first finger with a plaster cast in a position of opposition to the second finger for a period of 3 weeks. UHF is prescribed through a cast from the 3rd day, after the end of immobilization - rehabilitation treatment.
Surgical treatment of rupture of the lateral ligaments of the first metacarpophalangeal joint
If the ligament is not restored, surgical intervention is used.