Medical MCQ - A healthy young athlete sitting at table with knee at 90deg flexion. What will happen when he fully extends the knee?

A healthy young athlete sitting at table with knee at 90deg flexion. What will happen when he fully extends the knee?

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

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Correct Answer:

Movement of tibial tuberosity towards lateral border of patella

Description:

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.

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