
- sudden traction
- radial head sublaxation

- tibial tubercle apophyseal traction injury
- rupture of the growth plate at the tibial tuberosity
- tibial tubercle hurt
- caused by overuse

- popliteal cyst
- non-pulsatile swelling
- posterior aspect of the knee
- Ddx - lipoma, aneurysm, neuroma & rarely tumor


- physical examination - Adams test (forward bending)

- Slipped capital femoral epiphysis (also known as "Slipped upper femoral epiphysis")
- referring to a fracture through the physis (the growth plate), which results in slippage of the overlying epiphysis
- a/w obesity, deficient gonadal development & hypothyroidism

- developmental dysplasia of the hip
- patients who are born with dislocation or instability of the hip, which may then result in hip dysplasia


- avascular necrosis of femoral head
- X-ray - wide articular surface, then necrosis - flattened femoral head - later becomes spherical