– Discussion: – see native acetabular anteversion and femoral anteversion and acetabular component position – general considerations: – simple visualization of length of anterior/posterior walls gives an accurate measure of native anteversion; – references: – Femoral anteversion in THA and its lack of correlation with native acetabular anteversion. – … Read more
– See: – Burst Frx – Thoracic & Thoracolumbar Spine : – Posterolateral Decompression: – Discussion: – frx at this level are frequently due to relative immobility of thoracic spine compared to the lumbar spine; – upper thoracic spine (T1 … Read more
– See: Thoracolumbar fractures: – Frx Discussion: – frx in this region are usually the result of hyperflexion, which produces wedge compression of one or more vertebral bodies; – due to the rigidity of the rib cage, most of these fractures are stable; (See Burst Fx) – where kyphosis > … Read more
– See: – Burst Fractures – Thoracic and Thoracolumbar Spine: – Discussion: – results from hyperflexion, which produces wedge compression of one or more vertebral bodies; – due to the rigidity of the rib cage, most of these frxs are stable; – thoracic spinal … Read more
origin: the transverse process of the 6th to 10 Thoracic vertebrae; insertion: the spinous process of the 1st to 4th thoracic and 6th-7th cervical vertebrae; action: extends the spine and rotates it toward the opposite side; nerve supply: posterior rami of the thoracic nerves, T1 to T6; synergists: Longissimus Thoracis, Iliocostalis thoracis, Spinalis Thoracis
– See: Arteries of the Upper Limb – Discussion: – branch of axillary artery; – pierces the clavipectoral fascia and gives rise to 4 branches; – clavicular – small branches that run toward sternoclavicular joint, supplying this and a little bit of the anterior thoracic wall; … Read more
– See: Vascular Problems of the Upper Extremity: – Discussion: – thoracic outlet space is created by the clavicle, first rib, subclavius muscle, costoclavicular ligament, and anterior scalene muscle; – most often affects subclavian artery, vein, and lower trunk (C8 & T1) of brachial plexus; – both the subclavian artery and the brachial plexus traverse … Read more
– Discussion: – progression: – rt thoracic curves > 50 deg are at highest risk for progression (1 deg/yr) followed by Rt lumbar curves; – single thoracic curves> 70-75 deg at growth completion progress an average of about 17 deg; – … Read more
– See: Role of the Ankle in Gait – Discussion: – is a hinge joint w/ malleoli projecting downward from tibia & fibula forming medial and lateral walls of the mortise, encompassing talus; – in addition, malleoli serve as pulleys for tendons reaching plantar surface of foot from posterior and lateral compartments of … Read more
– Discussion: – indicated primary for traumatic peripheral ulnar sided TFCC tears; – negative predictive factors for successful repair include concomitant ulnocarpal impaction syndrome (associated w/ degenerative tears) and peripheral radial tears (due to the relative avasucularity of the disc in this region; – some surgeons feel … Read more