The objective of this study is to evaluate the value of growing rods for the correction of long bone deformities in pediatric cases attending Sohag University Hospital and follow up aiming at determining benefits and obstacles to this technique

• The participants will be subjected to surgical correction using growing rods as a novel technique for their long bone deformities.
• Procedure will be done under anaesethia
• Osteotomy , fracture reduction , deformity correction will be done , then introduction of the growing rod

Inclusion Criteria:

• cases of osteogenesis imperfecta
• metabolic bone deformities
• cases of hemimelia
• traumatic bone deformities
• complex or simple deformities

Exclusion Criteria:

• adult deformities
• short bone deformities
• very narrow medulla
• osteopetrosis