– Discussion: – general discussion of allograft tissue: – as pointed out by Harner et al. (1996), subjective knee scores were slightly better for knees having ACL – bone patellar bone allograft (as compared to BPB autograft patients) – objective ratings included normal (or nearly normal) … Read more
– 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
– See: Bone Tumor Menu – Discussion: – rare tumor of unknown origin; – occurs primarily in young males between 10 – 30 years of age (most common after skeletal maturity); – pts present w/ firm, slowly enlarging mass that produces minimal disability; … Read more
– See: Infection Menu and Wound Management: and Local Antibiotic Delivery for Septic Joints – Discussion: – basic science: – useful in treating biofilm; – references: – In vitro characteristics of tobramycin-PMMA beads: compressive strength and leaching. – Antibiotic bone cement in THA. An in vivo comparison of the elution properties of … Read more
Autogenous bone graft remains the most effective treatment for fracture non unions, pseudoarthroses and for optimizing the success rate of arthrodesis. It is safer and more effective than artificial hydroxyapatite materials or allograft. The Acumed bone graft harvesting instruments facilitates safe, rapid harvest of morsellized autogenous graft through a small skin incision which minimizes the … 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; tilting of acromion during abduction & adduction of arm; rotation of the clavicle; rotation occurs during abduction & … Read more
Total Hip Replacement Menu » Acetabular Component Revision » Discussion indications: salvage device for use in cases of pelvic discontinuity where a stable socket cannot be wedged between the anterior and posterior columns; classification of bone defects and bone grafting options: in almost every case, bone graft is morcelized and placed behind the cup; in … Read more
THR menu acetabular component revision acetabular component Socket (Hip Center) Location if opposite hip is normal, it may be used as a template; normal hip center should be restored when possible (this will reduce joint reactive forces); generally the the component is placed as far medially and as far inferiorly as possible; management of superior … Read more
Discussion hyaline cartilage is the most common variety of cartilage; it is found in costal cartilages, articular cartilages, epiphyseal plates, & majority of fetal skeleton that is later replaced by bone; chondrocytes, occupy lacunae generously distributed through the matrix; each peripheral lacuna typically houses a single chondrocyte; deeper lacunae may contain two or more chondrocytes; … Read more
(see also: Chondral Injuries: Nourishment) Discussion articular cartilage is avascular & is prevented from mounting a vascular response when there is isolated cartilage injury; absence of vessels w/ in cartilage imposes limitations on healing potential; indeed, some traumatic defects in cartilage apparently never heal; chondrocytes in articular cartilage are capable of cell division & are … Read more