Orthonotes
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Metals: stainless steel (316L), cobalt‑chrome, titanium alloys; differences in modulus, corrosion resistance, MRI artifacts. Polymers: UHMWPE (arthroplasty bearings), PMMA (bone ce...
General | 👁 5 | 2 weeks agoAutograft is gold standard: osteogenic + osteoinductive + osteoconductive (iliac crest). Allograft provides scaffold (osteoconductive) ± growth factors; immune & disease transmissi...
General | 👁 9 | 2 weeks agoDefective mineralization: osteoid in adults (osteomalacia) vs physis in children (rickets). Etiologies: Vit D deficiency/resistance, phosphate deficiency (tumor‑induced, hereditary...
General | 👁 5 | 2 weeks agoExcess PTH causes cortical bone loss via RANKL-mediated osteoclast activation; classic radiology: subperiosteal resorption, salt‑and‑pepper skull, brown tumors. Primary (adenoma),...
General | 👁 3 | 2 weeks agoBrachial plexus consists of Roots (C5–T1), Trunks (upper, middle, lower), Divisions (each trunk splits into anterior/posterior), Cords (lateral, posterior, medial), and terminal Br...
General | 👁 12 | 2 weeks agoLoad sharing vs load bearing; absolute vs relative stability; primary vs secondary healing. Plates: compression (DCP/LCP in compression) vs bridging (relative stability); working l...
Trauma | 👁 9 | 2 weeks ago