Knee Anomalies

Question 1

Failure of ossification of the patella which causes an isolated fragment in superolateral quadrant of patella

Answer 1

Bipartite Patella (or tripartite, multipartite)

Question 2

A small, osteolytic defect of the superolateral dorsal surface of the patella

Answer 2

Dorsal defect of the patella

Question 3

Ossicle in the lateral head of the gastrocnemius tendon. Most common accessory sesamoid of the knee

Answer 3

Os Fabella

Question 4

Fragmentation of the lower pole of the patella. Usually a stress related injuring occurring in adolescents

Answer 4

Sinding-Larson-Johansson Disease

Question 5

Painful fragmentation of the tibial tubercle apophysis

Answer 5

Osgood-Schlatter’s Disease