– See: Proximal Humeral Physeal Injuries – Discussion: – classification of proximal humeral fractures: – anatomic neck fracture: – one part fracture – two part fractures – two part surgical neck fracture – two part tuberosity fractures: – lesser tuberosity frx; – greater tuberosity frx; – three part fractures – four part fracture: – fracture … Read more
– Discussion: – indicated for displaced surgical neck, 3 part, and 4 part fracture; – deforming forces: – pectoralis major pulls the shaft medially, anteriorly and internally rotates; – supraspinatus abducts the head fragment in two part fractures; – w/ greater tuberosity is fracture, it will be pulled superiorly … Read more
– Considerations: – see plate fixation theory and bone healing with plate fixation; – candidates for ORIF are humeral shaft frx w/ no comminution w/ enough of an oblique component to allow lag screw fixation; – in contrast, comminuted transverse fractures may be less satisfying for fixation, and may require bone grafting; – w/ transverse … Read more
– Technique for Surgical Neck Frx: – use 2.5 mm terminally threaded AO Schanz pins; – following appropriate reduction, one pin is inserted thru lateral arm, at a point 8 cm distal to acromion in order to avoid axillary nerve; – second pin is inserted … Read more
– Discussion: – nonunion of fractures of the distal humerus usually occurs when stable internal fixation has not been achieved Open reduction and internal fixation of delayed union and nonunion of the distal humerus. Reconstruction after malunion and nonunion of intra-articular fractures of the distal humerus. Methods and results in 13 adults. Non-union of fractures of … Read more
– Discussion: – Non Union – General Discussion: – definition of fracture union: defined as bridging callus (ideally both cortices) on 2 orthogonal views with the disappearance of fracture lines – care must be taken not to mistake a pseudoarthrosis for a simple hypertrophic nonunion; – treatment of the pseudoarthrosis requires complete resection of the synovial tissue, and … Read more
– Discussion: – locking hook spinal rod is constructed of extra hard, 316 L stainless; – it is 5 x 7 mm in diameter and threaded at both ends for attachment hook, which are adjusted longitudinally using a pair of nuts; – hooks are rotationally locked to the rod by … Read more
– See: Humeral Frx – Main Menu – Condylar Fractures – Non Union of Humeral Fractures – Pediatric Humeral Shaft Fracture – Synthes Humeral Shaft Products – Discussion: – mechanism: – bending force produces transverse frx of the shaft; – torsion force will result in a spiral fracture; – combination of bending and torsion produce … Read more
– Medullary bone: – decreased in quantity, & trabecula are thin & irregular; – feature that most sig helps to establish the dx is presence of layer of unmineralized bone (osteoid seam) surrounding mineralized segment; – trabeculae & cortex have less bone, & is surrounded by a layer of unmineralized bone (osteoid seam) – osteoid seams; … Read more