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Orthopaedic deformities may result from abnormalities of bone, joints, growth plates, muscles, tendons, ligaments or nerves and can be angular, rotational, translational or length-related. Common deformities include cubitus varus and valgus...
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Definition (WHO): low bone mass with microarchitectural deterioration → fragility fractures; T‑score ≤ −2.5 on DEXA. Common sites: vertebral compression, hip (femoral nec...
Focal disorder of accelerated bone turnover: osteoclastic resorption followed by disorganized osteoblastic formation → enlarged, weak, vascular bone. Common sites: pelvis...
SSI prevention bundle: preop optimization (glucose, smoking cessation), skin prep with alcohol‑chlorhexidine, timed antibiotic prophylaxis, normothermia, OR traffic contr...
Seddon: neuropraxia, axonotmesis, neurotmesis; Sunderland expands to 5 degrees based on structural disruption. Degree I: conduction block; II: axonal disruption intact en...
Zones: reserve (resting), proliferative, hypertrophic (maturation, degeneration, provisional calcification). Regulation: Ihh/PTHrP feedback loop, GH/IGF‑1 axis, local fac...
Phases: inflammation → soft callus (cartilage) → hard callus (woven bone) → remodeling (lamellar). Primary (direct) vs secondary (indirect) healing; absolute vs relative...
Buckle/Torus: Compression failure of cortex (metaphyseal) — stable; treat with short immobilization/splint. Plastic Bowing: Microfracture without discrete break; persiste...
Physeal separation of medial clavicle mimics SCJ dislocation — the physis is weaker than ligaments in children. Posterior displacement threatens mediastinal structures —...
Three arches: medial & lateral longitudinal, and transverse (anterior/posterior). Keystone bones: talus (medial longitudinal), cuboid (lateral), intermediate cuneiform (t...
Origin: supraspinous fossa; insertion: superior facet of greater tuberosity; innervation: suprascapular nerve (C5–6). Action: initiates abduction, contributes to humeral...
Thickened lateral fascia lata from iliac crest to Gerdy’s tubercle; receives fibers from TFL and gluteus maximus. Functions: lateral knee stabilization, assists hip abduc...
Tillaux: Anterolateral epiphyseal avulsion (SH-III) during asymmetric physeal closure — intra-articular; >2 mm step needs fixation. Triplane: Multi-planar SH-IV variant (...
