– see bone graft menu – Discussion of Allografts: – see autograft menu and bone healing: – allografts are most indicated when bone grafting is required along with need for mechanical structural support; – morselized bone graft: – structural bone grafts: – fresh allografts – generally … Read more
– Discussion: (see bisphosphonates) – type of aminobisphosphonate (a synthetic analogs of pyrophosphate) which acts as an inhibitor of osteoclast-mediated bone resorption; – due to substantial reduction in bone resorption, bone formation exceeds bone resorption at these remodeling sites, which leads to progressive gains in bone mass; – this … Read more
– Discussion: – cardiopulmonary problems (thoracic curves > 60-65 deg alter PFT’s; – curves > 90 deg may cause myelopathy & may affect mortality; – progression is unlikely in curves < 30 deg – single major thoracic curves > 60-80 deg … Read more
– Discussion: – often occurs as a result of degenerative disc disease and facet deficiency; – it is often associated w/ intersegmental instability and w/ central stenosis; – more commonly involves older black females and diabetics (affects females 6 times as much as males); – involves L4-L5 … Read more
– See: SC Joint Injury – Medial SC Joint Injury: – injury is due separation of proximal clavicular physis rather than dislocation; – need to determine if proximal clavicular metaphysis (distal fragment) is anterior or posterior; – anterior and superior displacement of medial end of clavicle or x-ray appearance … Read more
– Discussion: – refers to a condition in which the shoulder capsule becomes contracted and thickened; – patients note a dramatic decrease in shoulder ROM; – in many cases there is spontaneous resolution after 1-3 years and motion is re-gained; – associated disorders: … Read more
– Discussion: – AC joint is situated between the clavicle and acromion; – acromion has two ossification centers which fuse at age 22 yrs; – it permits motion in three planes: – AP gliding of acromion during protraction & retraction of scapula; … Read more
– See: Pseudoachondroplasia – Discussion: – autosomal dominant disorder; – arises due to a point mutation for the gene encoding a fibroblast growth factor (Fibroblast growth factor receptor 3) – over 80% of all persons with this disorder are born to parents who are not achondroplastic, & such parents rarely … Read more
– Normal Hip Development: (limb development and pediatric anteversion); – at 4 to 6 gestational weeks, the hip joint develops from the cartilaginous anlage; – by 7 weeks a cleft develops between precartilagenous cells which are programmed to form the femoral head and acetabulum; – by 11 weeks, the hip … Read more
– Graft Entry Point: – because the slope of the intercondylar notch will vary from 26 to 44 deg, the tibial tunnel should be accordingly positioned between the anterior third and the midpoint of the saggital length of the tibia; – referenced off the PCL: – this … Read more