What are the injuries and what classic sign is seen?
What vertebral abnormality is seen in this two year old? ANSWER: http://goo.gl/Xn0IvK
Pathological subtrochanteric fracture of the femur. Note the lytic medullary lesion with endosteal scalloping at the site of fracture. This patient had multiple myeloma but a metastasis could easily produce the same appearance.
What sort of study is this and what abnormality is shown?
More images at: http://goo.gl/RR0Uv6
Haglund syndrome - bony prominence of the posterosuperior aspect of the calcaneum (Haglund deformity) with marked surrounding soft-tissue oedema due to insertional Achilles tendonosis and retrocalcaneal bursitis.