Chapter 7 Hip and Pelvis

Pelvis Consists of: 2 hip bones Ilium Pubis Ischium Sacrum Coccyx ______________ 2 hip bones Acetabulum

Ilium Ala Body Superior acetabulum Iliac Crest _______ AIIS _______ PIIS

Ischium Body Posterioinferior acetabulum Ramus Ischial Tuberosity ____________ _______________ Lesser Sciatic Notch

Pubis Body Anterioinferior acetabulum Superior Ramus __________

True Pelvis _____________ Surrounded by bone Sacrum Ilium Pubis _____________ Tip of bilateral ischial tuberosities Tip of coccyx

Pelvis Joints Sacroiliac Joints (SI) Symphysis Pubis Acetabulum Hip Joint

Male and Female Pelvis Male __________ Ala less flared ________ pubic arch Oval obturator foramen Female ___________ Flared Ala _______ pubic arch Narrow obturator foramen

Imaging the Pelvis AP 40”SID 75 kV

AP Pelvis Supine _______________ ____________should not be seen or barely seen CR Midsagittal plane Between ASIS and Symphysis Pubis Tip: Put top of ___at crest and center to the IR _____________________

Proximal Femur Head Fovea Capitis Neck Greater Trochanter Lesser Trochanter Intertrochanteric Crest Head and Neck = _____________

Imaging the Hip AP Pelvis AP Unilateral Hip Lateral Frog Leg Cross Table 40” SID 75 kV

AP Unilateral Hip Supine Leg extended Rotate leg _____________ _____________is not seen or mostly not seen CR __________ to femoral neck 2” medial and 4” distal to ASIS

Frog Leg Lateral Supine Flex knee and __________ CR to femoral neck _________to ASIS

Cross Table Hip Supine Do not move affected hip ____________unaffected leg X-table holder Grid and _________with femoral neck Superior to iliac crest CR perpendicular to IR

Sacroiliac Joint Imaging _________Posterior Oblique The joint of interest is _______ ________ for left SI joint Direct CR 1” medial to upside ASIS