– Discussion: – theory based on reproduction of frx patterns in cadavera; – rationale was to guide closed treatment of fractures about the ankle; – initial position of the foot is either supination or pronation; – supination of foot places tension on lateral structures of ankle; – pronation places … Read more
– See: Synthes Plates and Screws:3.5 MM DCP, LC-DCP 3.5 MM LCP 4.5 MM LCP RECONSTRUCTION PLATE – Dynamic Compression Plates: – Properties of Titanium; – Discussion: – is used for same indications as DCP, but the improved design offers additional advantages; – undercut plate holes: undercut at each … Read more
– See: Retinacular Release for TKR: – Discussion: – see lateral anatomy of the knee and blood supply to the knee; – lateral release detaches patella from lateral soft tissue structures, including lateral retinaculum, fibers from tensa fascia lata muscle, & joint capsule; – a successful release should release the lateral … Read more
– Discussion: Type I Fractures: – this is the wedge fracture of a lateral plateau; – it occurs mostly in young people since the dense cancellous bone of lateral plateau resists depression; – “Minimally Displaced Fractures” (from the Holh Classification) – frx shows depression … Read more
– Discussion: – when the frx is sufficiently oblique & is not comminuted, it can be treated w/ a lag screw to produce intrafragmentary compression, and neutralization plate placed laterally to prevent frx from slippling; – disadvantages of lateral plating: – prominent lateral screws may cause … Read more
– Radiographic Findings: – ankle frx: – fibula overlaps posterior aspect of tibia, but posterior tubercle of tibia can still be seen; – posterior subluxation of talus in mortise may be assoc w/ posterior lip frx or posterior talofibular ligament tear; … Read more
– See: Patella Alta: – Discussion: – patellar height in relation to the joint line: (2 methods) – Insall and Salvati Method – Blackburne and Peel Method – fat density zone seen posterior to the quadriceps (water … Read more
– See: L and T plate Characteristics – Discussion: – used to support cortex of a metaphysis from crumbling or displacing; – for the lateral condyle, use precontoured T butress plate & L butress plate which comes in a right and left version; – butress plates must be accurately contoured; – if a butress plate … Read more
– Discussion: Tibial Plateau Frx Menu – lateral plateau frxs include: – type I fractures – type II fractures – type III fractures – local compression frx which are similar to type iii frx – Surgical Stratedgy: – extensile surgical approach that exposes whole … Read more
– Discussion: – demonstrates the posterior subtalar facet; – foot is passively everted, dorsiflexed and externally rotated 60 deg; – central beam centered 1 inch below tip of medial malleolus with 10 deg cephalic tilt