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Pelvis Unit 7
| Question | Answer |
|---|---|
| Pelvimetry | Procedure gives 2 way measurement to 3 parts of true pelvis |
| elongation of femoral necks | determines sufficient internal rotation of leg to acheive true pelvis |
| AP Pelvis good positioning | measure from ASIS to table on both sides |
| innominate or os coxae | hip bone |
| sonography/ultrasound | replaced pelvimetry |
| extends between pubic symphesis and coccyx | transverse dimension of outlet |
| ala | wing of ilium |
| 3 divisions between true pelvis | inlet, outlet, pelvic cavity |
| SI Joints | synovial amphiarthrodial |
| symphesis pubis | amphiarthrodial |
| hip | diarthrodic |
| two structures that form hip joint | acetabulum and femoral head |
| largest foramen in body | obturator |
| ischial tuberosity | used to correctly place translateral hip radiograph on viewbox |
| CR for AP Pelvis | H/T halfway between ASIS and pubic symphesis S/S mid sag |
| CR for unilateral AP HIp | H/T diagonal line between ASIS and pubic symphesis, bisect, then 2.5' belowGreater trochanter profiled |
| CR for translateral Hip | same as unilateral AP Hip, aim for christmas |
| Position for frog lateral | flex knee, abduct hip |
| CR for pelvimetry with Colcher-Sussman method | perpendicular to mid IR 1.5' superior to pubic symphesis |
| Obturator foramen boundaries | Pubis and ischium |
| Most inferior structure of pelvis | Ischial tuberosity |
| Most inferior and anterior structure of pelvis | pubic symphesis |
| female pelvis | lighter, wider and shallower than males; inlet larger and more oval |
| female sacrum | wider and curves more sharplay posterior |
| angle of neck of femur | 125 degrees superior to shaft |
| femur neck in anatomical position | 15-20 degrees anteriorly |
| 3 joints of hip | sacroiliac, hip joint, symphesis pubis |
| greater trochanter on level of | pubic symphesis |
| top of greater trochanter on level of | hip joint |
| Angles of proximal femur | neck to shaft 125 degrees; longitudinal 10; anterior 15-20 |
| how many bones make up the pelvis | 4; 2 hip bones, 1 sacrum, 1 coccyx |
| pelvic girdle | hip bones |
| 3 divisions of hip | Ilium, ischium, pubis |
| Position of ilium | superior |
| position of ischium | posterior |
| position of pubis | anterior |
| acetabulum | made up of ilium 2/5, ischium 2/5 and pubis 1/5 |
| body of ilium | wing or ala |
| obturator foramen | where iscium and pubic bone come together |
| True pelvis | below brim, birth canal |
| false pelvis | above brim, has muscles that hold up organs |
| pelvimetry | xray measures birth canal |
| AP Pelvis | CR midway between ASIS and symphesis pubisLeg internally rotated 15-20 degrees |
| AP Frog Pelvis (AP Oblique;modified cleaves) | CR 2" above smphesis pubis (same as midway between ASIS and symphesis pubis) |
| AP Hip | 10x12 CR: diagonal line between symhesis pubis, bisect, then 2.5" below line;rotate leg internally 15-20 degrees |
| XTL technique | do AP Pelvis first, double mAs and add 10 kVp |
| Cone | add 5-8 kVp |
| AP Axial Sacrum CR | 15 degrees cephalic (20 on females) 2" superior to pubic symphesis |
| AP Axial Sacrum position | supine, knees flexed, shield male patient |
| AP Axial Coccyx CR | 10 degrees caudal 2" superior to pubic symphesis |
| AP Axial Coccyx Position | 10x12 Patient supine, knees flexed, shield male, use cone or collimate well |
| SI Joints AP Axial CR | 30 degrees males, 35 females cephalic, 1.5" superior to pubic symphesis |
| SI Joints Obliques CR | 1" medial to elevated ASIS |
| SI Joints Oblique position | Patient oblique 25-30 degrees, must mark SI in profile |
| SI oblique tips | mark SI in profile, must do both side for comparison |
| SI oblique RPO,LPO | RPO shows left SI, LPO shows right |
| Lateral Sacrum position | lead on table behind patient back, affected side down, knees and hips flexed, support waist |
| Lateral sacrum CR | at level of ASIS and 3.5" posterior |
| Lateral coccyx position | on affected side, knees and hips flexed, support waist |
| Lateral coccyx CR | 2" inferior to ASIS and 3.5" posterior |
| Lateral sacrum and coccyx | 2" inferior to ASIS and 3.5" posterior |
| Inlet pelvis | pelvic trauma, assess posterior displacement of hemipelvis |
| Inlet CR | 40 degrees caudad, at level of ASIS |
| Inlet...what profiled | shows elongation of rim and ischial spine |
| Outlet pelvis | assess superior displacement of the posterior half of pelvis, profiles rami |
| Outlet CR | 30-45 degrees cephalad females, 10-35 males; 2" distal to symphesis pubis |
| Outlet...what profiled | rami without foreshortening |
| Judet (oblique acetabulum)position | 45 degree oblique, affected side down |
| Judet CR | 2" distal and 2" medial to ASIS |
| Judet RPO | Right anterior rim and left posterior rim profiled |
| Judet LPO | Left anterior rim and right posterior rim profiled |
| XTL position | build up hips, unaffected leg 90 degree flexion, foot supported |
| XTL cassette | 10x12 LW to bone |
| Legg-Perthes disease | flattening of femoral head due to vascular interruption |
| Paget's disease | Thick, soft bone marked by bowing and fractures |
| pelvic cavity | region between the inlet and outlet of true pelvis |
| AP Oblique, Frog Hip (Modified Cleaves)what profiled... | femoral heads, necks and trochanteric areas on one radiograph for comparison |
Created by:
sandonblaise
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