Data Trace Editor – Discussion: – slipped vertebral apophysis usually occurs in lower lumbar spine; – limbus vertebral frx occur when fusion between vertebral ring apophysis and central cartilage is incomplete or delayed; – ring apophysis w/ adjacent disc is displaced into vertebral canal; – apophysis remain suseptible … Read more
– Discussion: – slip of the captial femoral epiphysis occurs with in a narrow window of physiologic maturity of the growing child; – arises from mechanical and constitutional factors; – pts may have underlying endocrine dz (such as hypothyroidism) delayed puberty & bone age; – position of growth plate of proximal femur normally changes from … Read more
– Discussion: (see ligaments of the wrist and SLD) – three main ligamentous structures which bind the scaphoid to lunate; – volar radioscapholunate ligament (largest); – radiocapitolunate ligament; – scapholunate interosseous ligament (consists of dorsal, proximal, and palmar segments bridging the scaphoid and lunate); – dorsal portion: – 2-3 mm thick with transversely oriented … Read more
– Discussion: – osteotomy is made in a manner which leaves the vastus lateralis and gluteus medius muscles are left attached to the osteotomy fragment; – has a lower incidence of abductor dysfunction and proximal migration of trochanter; – presence of an intact vastus helps not only to preserve … Read more
– See: – High Angle Plates – Low Plate Angle – Nail Placement in Femoral Head and Neck – Screw Length – Unstable Intertrochanteric Fractures – Discussion: – sliding device w/ screw plate angle closest to combined force … Read more
– See: – Sliding Screw Insertion Technique – Sliding Hip Screw w/ Unstable Intertroch Frx – Subtrochanteric Fractures – Discussion: – sliding screw plate devices have proved to be more successful for subtroch frx than earlier implants for proimal femur; – sliding permits sl medial displacement of shaft in relationship … Read more
– Discussion: – device that is placed at lower angle has less force working parallel to sliding axis & more force working perpendicular to sliding axis. – this perpendicular force acts to jam or bend the device, thereby preventing impaction. – device that is placed at lower … Read more
– See: – Sliding Screw Insertion Technique – Sliding Screw Fixation in Subtroch Frx – Discussion: – treatment of unstable intertrochanteric frxs w/ sliding screw device w/o obtaining necessary bony stability, risks hardware failure; – if device impinges, it will act as a fixed angle nail … Read more
– Technique: – Application of Plate: – if a small incision has been used, it may be difficult get the plate underneath the skin; – if so, remove the plate from the assembly device, slip it underneath the vastus and then reattach the … Read more
– Biomechanics of Screw-Plate Angle – Checklist – Sliding Hip Screw w/ Unstable Frx – High Angle Plates – Low Plate Angle – Nail Placement in Femoral Head and Neck – Screw Length – Sliding Screw Fixation in Femoral Neck Frx – Sliding Screw Fixation … Read more