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Unformatted text preview: LAB 6: BONES AND MUSCLES OF THE HIP BONE AND BONY LANDMARK IDENTIFICATION The pelvic girdle is formed by 2 ossa coxae (innominates, or hip bones) that are united anteriorly by the symphysis pubis and posteriorly by the sacrum. Each os coxae is actually a fusion of 3 bones: ilium, ischium, and pubis. Bony Landmarks of the Ilium •iliac crest •anterior superior iliac spine •anterior inferior iliac spine •posterior superior iliac spine •posterior inferior iliac spine •glenoid fossa (cavity) •greater sciatic notch •iliac fossa •articular surface for sacrum •iliac tubercle •iliac tuberosity •posterior gluteal line •anterior gluteal line •inferior gluteal line Bony Landmarks of the Ischium •ischial tuberosity •ischial spine •lesser sciatic notch •ramus of ischium Bony Landmarks of the Pubis •superior pubic ramus •symphysis pubis •inferior pubic ramus •pubic tubercle “Shared” Pelvic Structures •acetabulum •arcuate line •acetabular notch •obturator foramen Bony Landmarks of the Femur (Proximal) •head •neck •greater trochanter •lesser trochanter •intertrochanteric line •intertrochanteric crest •trochanteric fossa •gluteal tuberosity •fovea capitis 1. How would you distinguish between a left and right ossa coxae? 2. Find/palpate on yourself and each other the following landmarks: 3. Iliac crest 4. Anterior superior iliac spine (ASIS) 5. Posterior superior iliac spine (PSIS) 6. Greater trochanter of femur 7. Distinguish between the false and true pelvis. 8. What are the major differences between the male and female pelvis? Why do you think there are differences? HIP JOINT The hip joint is a synovial joint between the head of the femur and the acetabulum of the pelvis. It is a multi ­axial ball ­and ­socket joint. Unlike the shoulder joint, however, the hip joint is quite stable. 1. Demonstrate the movements available at the hip joint. 2. What structures contribute to hip joint stability? 3. What attaches to the fovea capitis? MUSCLES OF THE HIP The Gluteal Group The Lateral Rotators The Iliopsoas Group •Gluteus Maximus •Piriformis •Psoas Major •Gluteus Medius •Obturator Internus •Iliacus •Gluteus Minimus •Obturator Externus •Tensor Fasciae Latae •Gemellus Superior •Gemellus Inferior •Quadratus Femoris 1. Which of these muscles flex the hip? 2. Which of these muscles extend the hip? 3. Which of these muscles abduct the hip? 4. Which of these muscles medially rotate the hip? 5. Draw/shade in the origins of the following muscles in this diagram: •gluteus maximus •gluteus medius •gluteus minimus •tensor fasciae latae •obturator internus •obturator externus •gemellus superior •gemellus inferior •quadratus femoris •iliacus 6. Using the diagram, indicate which muscles insert into the following landmarks: •greater trochanter •lesser trochanter •trochanteric fossa •trochanteric crest •gluteal tuberosity ...
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