deformity

Definition

A fixed equinus deformity of the forefoot in relation to the hindfoot 

- resulting in an abnormally high arch that fails to flatten with weight bearing

- deformity may be forefoot, hindfoot or combination

Aetiology

Deformities

Mallet

- DIP flexed

- MTP / PIPJ neutral

Hammer 

- PIP flexion

- DIPJ neutral / extended

Simple - MTP not involved

Complex - MTP hyper-extended

Claw 

- PIPJ and DIPJ flexed

- MTPJ hyperextended

Curly toe 

- PIP and DIP flexion

Definition

Deformity causing alteration of mechanical axis from knee centre

Aims

1.  Normal leg alignment

2.  Equal leg lengths