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Lateral Rotators
Lateral Rotators of the hip
Question | Answer |
---|---|
What is the origin of the Piriformis? | Anterior sacrum |
What is the origin of the Quadratus Femoris | Ischial tuberosity |
What is the Origin of the Obturator Internus? | Inner surface of obturator foramen |
What is the origin of the Obturator Externus? | Superior & inferior rami of pubis |
What is the origin of the Superior Gemellus | Ischial Spine |
What is the origin of the Inferior Gemellus | Ischial tuberosity |
What is the insertion of the Piriformis? | Greater trochanter of the femur |
What is the insertion of the Quadratus Femoris? | Intertrochanteric crest |
What is the insertion of the Obturator Internus? | Medial surface of greater trochanter |
What is the insertion of the Obturator Externus? | Trochanteric fossa of femur |
What is the insertion of the Superior Gemellus? | Upper border of greater trochanter |
What is the insertion of the Inferior Gemellus? | Upper border of the greater trochanter |
What is the action of the Piriformis? | Laterally rotates & abducts thigh at hip joint |
What is the action of the Quadratus Femoris? | Laterally rotates & stabilizes hip |
What is the action of the Obturator Internus? | Laterally rotates thigh at hip joint |
What is the action of the Obturator Externus? | Laterally rotates hip |
What is the action of the Superior Gemellus? | Laterally rotates the hip |
What is the action of the Inferior Gemellus? | Laterally rotates the hip |
What is the nerve innervation of the Piriformis? | Sacral plexus |
What is the nerve innervation of the Quadratus Femoris? | Sacral plexus |
What is the nerve innervation of the Obturator Internus? | Sacral plexus |
What is the nerve innervation of the Obturator Externus? | Obturator |
What is the nerve innervation of the Superior Gemellus? | Sacral plexus |
What is the nerve innervation of the Inferior Gemellus? | Sacral plexus |
Which movement of the hip will shorten the fibers of the Quadratus Femoris? a) medial rotation b) flexion c) lateral rotation d) extension | c) lateral rotation |
Which movement of the hip will lengthen the fibers of the piriformis? a) adduction of the thigh when hip is flexed b) lateral rotation c) adduction with hip in neutral d) extension | a) adduction of the thigh when hip is flexed |
Which is the origin of the piriformis? a) posterior surface of sacrum b) coccyx c) anterior surface of sacrum d) posterior surface of ilum | c) anterior surface of sacrum |
Which is the insertion of the Piriformis? a) greater trochanter b) lesser trochanter c) intertrochanteric crest d) pectineal line | a) greater trochanter |
Which of the following is an action of the Piriformis? a) medially rotate the hip b) abduct the hip when the hip is flexed c) adduct the hip when the hip is flexed d) flex the hip | b) abduct the hip when the hip is flexed |
Which is the origin of the Quadratus Femoris? a) lateral surface of sacrum b) lateral border of ischial tuberosity c) coccyx d) inferior ramus of the ischium | b) lateral border of ischial tuberosity |
Which is the insertion of the Quadratus Femoris? a) neck of femur b) pectineal line of femur c) lesser trochanter of femur d) intertrochanteric crest, between greater & lesser trochanters | d) intertrochanteric crest, between the greater & lesser trachanters |
Which is the origin of the obturator internus? a) obturator foramen b) ischial tuberosity c) lateral surface of ilium d) obturator membrane & inferior surface of obturator foramen | d) obturator membrane & inferior surface of obturator foramen |
Which is the insertion of the obturator internus? a) intertrochanteric crest of femur b) lesser trochanter c) intertrochanteric crest, between the greater & lesser trochanters d) medial surface of greater trochanter | d) medial surface of greater trochanter |
Which is the origin of the obturator externus? a) pubic tubercles b) pubic crest c) superior & inferior rami of pubis d) inferior ramus of ischium | c) superior & inferior rami of pubis |
Which is the insertion of the obturator externus? a) trochanteric fossa of femur b) pectineal line of femur c) greater trochanter of femur d) lesser trochanter of femur | a) trochanteric fossa of femur |
Which is the origin of the gemellus superior? a) ischial spine b) ischial tuberosity c) lesser sciatic notch d) posterior surface of sacrum | a) ischial spine |
Which is the insertion of the gemellus superior? a) intertrochanteric crest of femur b) head of femur c) lesser trochanter of femur d) upper border of greater trochanter | d) upper border of greater trochanter |
Which is the origin of the gemellus inferior? a) ischial spine b) inferior ramus of the pubis c) ischial tuberosity d) coccyx | c) ischial tuberosity |
Which is the insertion of the gemellus inferior? a) neck of femur b) lesser trochanter of femur c) upper border of greater trochanter d) intertrochanteric crest of femur | c) upper border of greater trochanter |