Figure 2: Anteroposterior (a) and lateral (b) X-rays of the knees showing varus deformity. Visible abnormalities include ground glass osteoporosis, thinning of the cortices, lucencies at metaphysis (Trummerfeld zone, black arrow), small corner fractures (Pelkan’s spur, solid arrow), and dense zone of provisional calcification in the physis (White line of Frankel, dotted arrow).