<prompt> Most common site of osteogenic sarcoma is?Wrist jointJaw boneKnee jointShoulder joint  <response>: a Option 3 is correct, knee joint Osteosarcomas are bone producing malignant mesenchymal tumor. Although any bone can be involved, most tumors arise in the metaphyseal regions of long bones of the extremities, with almost 60occuring about knee, 15around hip, 10at the shoulder, and 8 in the jaw. Robbins basic pathology 9th edition page no 776,heading Osteosarcoma 