Fig. 2

a Standing antero-posterior radiograph of the pelvis and lower limbs of a 22-year-old patient with McCune–Albright syndrome and bimelic fibrous dysplasia involvement, showing a bilateral shepherd’s crook deformity (type 6 femoral deformity), coxa brevis, medial bowing of the right tibia and 4 cm of lower limb length discrepancy. She had been operated on twice, with bilateral femoral Küntscher nailing performed at 10 and 17 years of age, respectively. She was able to walk with pain for only a short distance using 2 crutches, and her clinical Jung’s score was 2 points. b In our hospital, she had bilateral femoral and right tibial osteotomies stabilized with intramedullary nails. c At follow-up, 9 years later, she had 10° of residual varus deformity of the right femoral shaft, neck–shaft angles of 110° on the right and 125° on the left, 3 cm of knee height asymmetry, and 2 cm of lower limb length discrepancy compensated for by a shoe lift. She also had a slight bilateral limitation of the hip ROM, but she was able to walk independently for a long distance despite a mild painless limp. A good result was obtained, with a clinical Jung score of 8 points