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45 Cards in this Set
- Front
- Back
3 bones of the hip
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ilium, ischium, pubis
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At what age do the three bones fuse together?
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20-25 yo
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What is the name of the surface in the acetabulum where the head of the femur articulates?
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Lunate surface
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What disease can be diagnosed using tri-radiate cartilage placement?
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Congenital hip dislocation (more common in boys)
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What is the important line that denotes a continuous and symetrical line between the obturator foramen and medial aspect of the femur?
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Shenton's line
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What is misplaced in congenital hip dislocation?
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Ossification center of the femoral head
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Describe Ortolani's maneuver.
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Lift and abduct thigh, feeling for "clunk" when the femoral head re-seats into the acetabulum
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Describe Barlow's maneuver.
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(reverse of Ortolani's), tests hip instability
-Thigh is adducted, then gentle downward pressure to see if the hip is "dislocatable" |
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What lies on top of the articular capsule of the hip joint? What muscle movement does it assist?
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Bursa, assists iliopsoas muscle movement
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What are the 3 ligaments of the hip joint?
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Iliofemoral (strongest), pubofemoral, ischiofemoral
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What movement does the iliofemoral ligament prevent?
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Hyperextension of the joint
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2 purposes of the acetabular labrum
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Protect and deepen the hip joint cavity
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What ligament lies at the bottom of the labrum and connects with the femoral head?
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Transverse acetabular ligament
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Connects the transverse acetabular ligament and femoral head
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Ligament of the head
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What vascularizes the femoral head?
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Artery of the head (branch of obturator)
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What is the major contributor for the hip joint vascular supply? Minor contributors?
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Major-medial circumflex a.
Minor-Lateral circumflex a., retinacular a., A. of head |
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3 locations of femoral fractures
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Neck fractures (likely avascular necrosis), intertrochanteric fractures, spiral fractures (trauma)
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5 main things traveling through greater sciatic foramen
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Piriformis muscle
Sciatic nerve Sup. and inf. gluteal nerve and vessels Post. femoral cutaneous nerve Pudendal n. and Internal pudendal a. (exit) |
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2 main things in lesser sciatic foramen
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Obturator internus tendon
Pudendal n. and internal pudendal a. (re-enter) |
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Function of gluteal maximus
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Extend and laterally rotate hip/thigh (mainly used when getting up)
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Innervation of gluteal maximus
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inferior gluteal nerve (L5, S1,2)
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Function of gluteal medius and minimus
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Abductors, stabilize during walking
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Innervation of three abductors of hip
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superior gluteal nerve (L4,5, S1)
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Name of test to check for strength of hip abductors (stand and check lean)
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Trendelenburg test
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What lies on the anterior surface of the piriformis muscle?
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Sacral plexus
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Where does piriformis muscle attach?
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Greater trochanter
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Where does the obturator internus tendon insert?
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Medial surface of greater trochanter
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Where do the gemelli muscles (Sup. and Inf.) lie?
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On either side of the obturator internus tendon
-Sup. arises from ischial spine -Inf. arises from post. ischium |
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Function of quadratus femoris
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Lateral rotator
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Innervation of lateral hip rotators
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Described as "nerve to..."
-nerve to piriformis -nerve to obturator internus -nerve to quadratus femoris |
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Sciatic nerve passes between which two lateral hip rotators
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piriformis and superior gemelli
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Innervation of hamstrings
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Sciatic nerve (L5, S1,2)
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Vasculature of hamstrings
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Perforating arteries of deep femoral a.
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Role of hamstrings
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Knee flexors and hip extensors
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Which muscle "unlocks" the knee from an extended position?
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Popliteus
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What often accompanies pulled hamstring injuries?
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Hematomas
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What two nerves make up the sciatic nerve?
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Tibial nerve and common fibular nerve (branches to these in the popliteal region)
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Injection site for IM drugs
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Place palm on greater trochanter and index on ASIS, then between index and middle finger
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Posterior hip dislocations present with what type of rotation?
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Internally rotated, shortened, adducted, and flexed
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What often happens with posterior hip dislocations?
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Avascular necrosis (AVN)
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Difference of presentation between posterior hip dislocation and femoral neck fractures.
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PHD-Internally rotated and shortened
FNF-externally rotated and shortened |
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Describe order of contents of popliteal fossa from superficial to deep.
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Tibial/Common fibular nerve, popliteal vein, popliteal a.
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What runs down the posterior midline of calf?
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Small saphenous vein
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What presents as a lump in the posterior knee?
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Baker cyst or popliteal cyst; usually after injury b/c of increased synovial fluid production in small bursa
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What provides cutaneous innervation for the posterior thigh region?
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Posterior femoral cutaneous nerve (S1,2,3)
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