[Ligament injuries of the metacarpophalangeal joint of the thumb].

When it comes to injuries of the collateral ligament in the metacarpal-phalangeal joint of the thumb, the best results have proved to be obtainable from primary surgery. Secondary ligament surgery according to Strandel, in its modification by Bäuerle and Reill, has its clear-cut indication and ensures restoration of thumb functionality. Arthrodesis is an alternative that should be chosen with generosity.