thigh pain

Epidemiology

Ranges

- up to 4%

Clinical

Focal pain

- typically anterolateral thigh

- often tender

- corresponds to tip of stem

Aetiology

1.  Instability

Types

- early

- late / failed bony ingrowth

Cause

- micromotion at distal stem

Goal

Initial press fit

- implant geometry fits the cortical bone in the proximal femur

- good initial mechanical stability

Biological fixation for success

- good press fit

- minimal micromotion

- bony or fibrous tissue ingrowth or ongrowth