The Hip - book

Nonossifying Fibroma

– Discussion:     – also known as fibrous cortical defect;     – most common bone lesion (40% children);     – it results from defect of periosteal cortical bone development which leads to failure of ossification;     – natural history:             – lesion typically develops in childhood … Read more

Non Union

– See:           – Humeral Fracture Non Union           – Tibial Non Unions           – Femoral Shaft Non Union    – Discussion:      – see bone healing and bone blood supply     – definition: fracture that lacks potential to heal without further intervention            – frx of shaft of long bone should not be considered nonunion until at … Read more

Neuroblastoma

  – Discussion:     – most common tumor that causes skeletal metastasis in children;     – frequency of neuroblastoma is about 1 per 100,000 persons;     – originates in neural-crest cells of sympathetic nervous system;     – majority of patients have tumor involvment of regional lymph nodes or have metastasis to … Read more