Bone

Question 1

which age group does osteosarcoma commonly affect and which joint is more affected

Answer 1

Bimodal age distribution-75% before 20 years ; knee joint - distal femur or proximal tibia

Question 2

which age group and bones does chondrosarcoma commonly affect

Answer 2

older adults; pelvis and proximal extremities

Question 3

Triangular shadow between cortex and raised periosted ends found radiographically in osteosarcoma is known as

Answer 3

Codman’s triangle