Fig. 1

a Eighteen-year-old boy with McCune–Albright syndrome and bimelic fibrous dysplasia involvement. He was wheelchair dependent, with a clinical Jung score of 0 points. He had had a non-operative orthopedic treatment for several lower limb fractures. b Three-dimensional CT scan of the pelvis and lower limbs showing a severe bilateral shepherd’s crook deformity (type 6 femoral deformity) with 6 cm of lower limb length discrepancy. c At follow-up, 5 years after the last intramedullary nailing, he walked independently with a mild painless limp; he was able to perform all the activities of daily living and he had a normal social life, regardless of the 2 cm of both lower limb length discrepancy and knee height asymmetry (d). An excellent result was obtained, with a clinical Jung score of 9 points