– Anatomy: – origin: ischial tuberosity w/ tendon of biceps femoris; – insertion: pes arserinus – action: – flexes and medially rotates the calf at the knee; extends, adducts and medially rotates the thigh at the hip; – reversed … Read more
L 1 | L 2 | L 3 | L 4 | L 5 | S 1 | S 2 S 3 –Ilio Psoas —- — Sartorius —– – … Read more
– Anatomy: – origin: upper and lower aspect of ischial tuberosity: – insertion: posterior surface of medial condyle of the tibia; – action: flexes and medially rotates the calf at the knee. extends, adducts and medially rotates the thigh at the hip; … Read more
– See: – Digit Reimplantation / Reconstruction – Thumb Soft Tissue Defects / Amputations – Indications: selective thumb reconstruction – Technique: – second metatarsal may be removed along with 2nd toe with little functional impairment; – toe is taken from contralateral foot to facilitate anastomosis; – dorsal … Read more
– See: Acetabular Component Menu Discussion it is controversial as to whether screws are necessary in THR, and there are relative advantages and disadvantages; cups should be designed with only 2-3 holes so as to maximize the porous coating surface and to minimize conduit for osteolysis; acetabular cup insertion: advantages of screw insertion: theoretically, screw … Read more
Scheuermann’s Kyphosis (SK): Incidence: 1-10% prevalence in adolescent population. Rare in patients under 10 years. Associated conditions: Spondylolysis – occurs in 6% of population with SK and scoliosis. Scoliosis occurs in 25% of population with SK. Demographics: Usually detected at puberty in skeletally immature adolescents. Males are twice as likely to develop SK than females; … Read more
– Anatomy: – arises from lumbrosacral plexus: L4, L5, S1, S2, S3; – nerve emerges from pelvis below piriformis & enters thigh between ischial tuberosity & greater trochanter; – in 10% of patients, the sciatic nerve is separated in greater sciatic foramen by all or part of the piriformis; – sciatic nerve is … Read more
– Discussion: – occurs most often in pediatric population; – accounts for up to 2/3 of severe cervical injuries in children < 8 years of age; – inherent elasticity in pediatric cervical spine can allow severe spinal cord injury to occur in absence of x-ray findings; – … Read more
– Discussion: – injury must occur to both interosseous and capsular ligaments for rotational instability of the scaphoid to occur; – dorsal approach to the wrist: – reduce scaphoid into the extended position; – surgeons gloved finger presses the distsal pole of scaphoid into an extended position; – K wire is inserted … Read more