Home > F. Pathology by regions > Limbs > clinodactyly

clinodactyly

Monday 13 June 2005

Definition: Clinodactyly is a fixed abnormal deviation of the finger in the coronal or radioulnar plane. It typically affects the middle phalanx of the fifth finger and produces a radial angulation of the distal interphalangeal joint.

Etiology

- familial clinodactyly

  • usually isolated
  • being inherited as an autosomal dominant trait with variable expressivity and incomplete penetrance

- otopalatodigital syndrome type 2 (OPD2)
- trisomy 21 (Down syndrome) (60%)
- normal population (18%)

Types

- second finger clinodactyly
- fifth toe clinodactyly

Differential diagnosis

- camptodactyly
- clenched hand

Portfolio

  • Fifth finger clinodactyly in trisomy 21
  • Fifth finger clinodactyly
  • Fifth finger clinodactyly and palmar transverse crease in trisomy (...)
  • Second, fourth and fifth finger clinodactyly in trisomy 21