pain

Plica 

Jumper's knee / Tendonitis

Bursitis

- prepatellar most common

- Pes anserinus 

Excessive Lateral Pressure Syndrome / Patella Tilt

Hoffa's Disease / Fat Pad Syndrome

ITB Syndrome

RSD

Others

- RA

Definition

Benign, bone-forming neoplasm

- characterized by a small nidus of neoplastic tissue

- surrounded by a wide zone of mature, reactive bone

Epidemiology

10% of benign bone tumours

Age 5-25

M:F 2:1

Aetiology

Unknown

- thought may be glomus tumour of bone

Pain secondary to prostaglandin production