Origin: the margin of bone immediately around the medial side of the obturator foramen, from the rami of the pubis and the inferior ramus of the ischium; Insertion: posterior aspect of the greater trochanter; Action: External Rotation of femur at the hip; (see external rotators) Synergists: Periformis, Gemellus Superior, Gemellus Inferior, Obturator … Read more
– See: External Hip Rotators; – Anatomy: – origin: inferior medial surface of the obturator foramen and the quadrilateral surface; – insertion: after passing thru the lesser sciatic notch, it inserts on the superior posterior aspect of the greater trochanter of the femur; – action: outward rotation of the … Read more
– origin: the apex of the spine process of the axis; – insertion: the inferior and dorsal part of the transverse process of the atlas; – action: rotates the atlas, turning the face toward the same side; – nerve supply: a branch of the dorsal primary division of the suboccipital nerve; – synergists: Longissimus Capitis, Rectus Capitis Posterior … Read more
– origin: the superior surface of the transverse process of the atlas; – insertion: the occipital bone, between the superior and inferior nuchal lines, lateral of the Semispinalis capitis ; – action: extension and lateral flexion of the head at the neck; – nerve supply: branch of the dorsal primary division of the suboccipital nerve; … Read more
– See: – Erb’s Palsy – Lower Root Injury: (Klumpke) – Shoulder in brachial plexus injuries: – Traumatic Brachial Plexus Palsy in Children – Discussion: – incidence of brachial plexus birth palsy is approx two / 1,000 births; – … Read more
– Avulsion Fracture – Comminuted Fractures – Distal Olecranon Fracture: – Fracture Dislocations – Oblique Fractures – Surgical Approach: – Transverse Fractures – Discussion: – results from indirect forces (hyperextension) – frx begins at midpoint of trochlear notch and extends distally to enter semilunar notch; – amount of frx … Read more
– Frx Malrotation: – tend to shorten & rotate rather than angulate; – may telescope because of proximal pull of extrinsic muscles; – effect of malrotation: – if 5 deg of malrotation is accepted, then displacement will override 10 mm; – Frx Shortening: … Read more
div class=”mh-row clearfix”> h1>/h1> div class=”bodycopy”>strong>- Discussion: /strong>(see a href=”/muscles-tendons/posterior-oblique-ligament/”>posterior oblique ligament/a>)br/> – passes from insertion of the a href=”/muscles-tendons/semimembranous/”>semimembranous/a> on posteromedial aspect of tibia obliquely & laterally upward to insertion of br/> semimembranosus on the posteromedial aspect of the tibia obliquely & laterally upward toward insertion of the lateral gastroc head;br/> – it acts as … Read more
– Discussion: – occurrence of syndesmosis injury with Weber B / SER fractures – references: – Intraoperative diagnosis of syndesmosis injuries in external rotation ankle fractures. – Syndesmotic instability in Weber B ankle fractures: a clinical evaluation. … Read more
– Discussion: – abnormally narrow intercondylar notches have been shown to correlate directly with an increased incidence of ACL tears; – w/ excessive internal rotation of the femur, the ACL may be ruptured as it impinges on the edge of the intercondylar notch; – notchplasty is used to widen the anterior portion and recess of the … Read more