arthrodesis

Indications

Young adult 

- 16 - 30 years old

- monoarticular disease

- heavy demand 

Exhausted options of osteotomy

- risk of THA failure  / multiple revision surgeries considered too high

Aims of arthrodesis

Maximise bony contact

Minimise shortening

Definition

No good definition

- flexible flat foot

- medial longitudinal arch of foot in weight-bearing is in contact with ground or closer to ground than 'normal'

Epidemiology

Common

- almost always bilateral

- strong familial tendency

Aetiology

Physiological

All infants have flat feet

Types

1.  Grice

2.  Lambrinudi

3.  Dunn

Grice

Definition

Extra-articular STJ fusion

- lateral bony block in sinus tarsi

- prevents valgus deformity

- allows undisturbed foot growth

Indication

Flexible valgus hindfoot in children 4 - 12

Polio

Definition

Painful restriction of dorsiflexion of the great toe 

- secondary to degenerative changes in MTPJ

- initially pain and synovitis

- osteophytes don't form medially or on plantar aspect

Epidemiology 

Two peaks

1.  Adolescence F > M

2.  Middle Age M > F

Aetiology

Often Idiopathic

Trauma