HTHSCI 2F03 Lecture Notes - Lecture 22: Osteochondritis Dissecans, Patellar Tendinitis, Navicular Bone

• School: McMaster University
• Department: Health Sciences
• Course: HTHSCI 2F03
• Professor: Bruce Wainman

Document Summary

Idiopathic condition in which bony centres of children/adolescents become temporarily softened due to osteonecrosis. Pain over lunate, esp. on active movement. Symptoms: pain below knee, esp c quads contraction. Tranction tendinopathy with calcification of proximal attachment of patellar tendon. Piece of bone and overlying cartilage dissects off into joint space. Commonly knee (med. fem. condyle), also elbow, hip and ankle. Congenital hip joint deformity in which the femoral head is or can be completely / partially displaced. Commonest cause of acute hip pain in children. Osteochondritis of the femoral head 2o to avn. Detected early and < half femoral head affected. Slip may be acute, chronic or acute-on-chronic. Iv abx: vanc + cefotaxime until mcs known. Wcc (e. g. >50,000/mm3) : mostly pmn. Cortex can fall into cyst fallen fragment . Usually radiolucent (except prostate which is sclerotic) Lump migrates down shaft from original growth plate site. Lytic lesion c central nidus and sclerotic rim.