Fig. 3

An 18-year-old patient had bilateral knee and malleolus valgus because of multiple osteochondroma. The right lower limb was 3.3 cm shorter than the left. a Full-length radiograph before operation. b X-ray after operation shows the deformity has been corrected. c Left lower limb surgery will be taken after 1 year. d Osteotomy and internal fixation at the left side. Re-examination X-ray shows the osteotomy site healed well. The lower limb alignment of right limb and the LLD is near normal