A<unk>  is a type of traumatic injury to the thumb. It occurs when the aponeurosis of the adductor pollicis muscle becomes interposed between the ruptured ulnar collateral ligament (UCL) of the thumb and its site of insertion at the base of the proximal phalanx. No longer in contact with its insertion site, the UCL cannot spontaneously heal.
Stener lesion
Fungating lesion
Atypia
Harlequin color change
Kniest dysplasia
Scalding
Cameron lesions
Sclerosis 