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Type 2 deformity in a 31-year-old man. Round-shaped areas of ground glass appearance encircled by a radiodense rim are scattered within the femoral neck and trochanteric and subtrochanteric regions. The neck-shaft angle is valgus (152°). Shaft cortices are normally represented. Permission received from Matteo Benedetti Valentini MD, from the Department of Orthopaedic Surgery of the University of Tor Vergata, Rome, Italy, for reproducing the scheme on the right.
