A healthy young athlete sitting at table with knee at 90deg flexion. What will happen when he fully extends the knee?
In sitting posture (when foot is off the ground), full extension leads to knee locking (by lateral rotation of tibia). Hence, tibial tuberosity moves laterally towards the lateral border of patella.
Movement of tibial tuberosity towards medial border of patella
Movement of tibial tuberosity towards lateral border of patella
Movement of tibial tuberosity towards centre of patella
No change in relationship
Muscles of Lower Limb