Definition
Clinodactyly is a fixed abnormal deviation of the finger
- in the coronal or radioulnar plane
Typically affects the middle phalanx of the fifth finger
- produces a radial angulation of the distal interphalangeal joint.
Normal if < 10-20°
Types
Primary
Usually little finger
- common
- AD & sporadic forms
80% syndromic
- Down's
- fetal alcolohol syndrome
M > F
Secondary / Delta Phalanx
Commonest cause
- trapezoid shaped P2
- cosmetic problem only
Management
Primary clinodactyly
Indication
- when fingers overlap
Management
- closing wedge osteotomy of P1
Secondary / Delta Phalanx
- see additional notes