Lecture 19 Outline of Last Lecture I. Muscles Outline of Current Lecture I. Pelvic Girdle II. Differences Between Male-Female Pelvis III. Pelvic Girdle During Pregnancy IV. Pelvic Girdle Joints V. Ligaments VI. Pelvic Girdle Functions VII. Movements VIII. Role of Pelvis During Walking IX. Spinal Misalignments X. Effects of Backrest XI. Muscles that Move to the Pelvic Girdle XII. Rectus Abdominis XIII. External/Internal Obliques XIV. Erector Spinae Muscle XV. Quadratus Lumborum XVI. Hip Muscles XVII. Anterior/Posterior Rotation HPER 205 1st Edition These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best !used as a supplement to your own notes, not as a substitute. !Current Lecture A. Pelvic Girdle1. Three partsa. Iliumb. Ischiumc. Pubis2. Function- facilitates movement of the femur by rotating3. Attaches lower extremity to vertebral columnB. Differences Between Male - Female Pelvis1. Femalesa. thinnerb. lighterc. widerd. flattere. titled anteriorlyf. sub-pubic angle widerC. Pelvic Girdle During Pregnancy1. During pregnancya. Increased loading from weight of babyb. Tilts anteriorly placing strain on low backc. Pelvic ligaments are strainedd. Scarring of the pubic symphysisD. Pelvic Girdle Joints1. Symphysis pubis or pubic symphysisa. shock absorption2. Sacroiliac jointsa. diarthrodial joints3. Stable jointsa. affected by hormonal changes in females4. Transmit loadsa. runningE. Ligaments1. Supporta. ant. & post. sacroiliacb. sacrospinousc. sacrotuberousd. inguinalF. Pelvic Girdle Functions1. Supports the weight of body from the spine2. Protects and supports the lower organsa. bladderb. reproductive organsc. fetus in a pregnant woman3. Facilitate lower body movementa. increase ROMG. Movements1. Anterior rotation/tilta. ASIS moves anterior2. Posterior rotation/tilta. ASIS moves posterior3. Lateral rotation/tilta. left = left pelvis moves inferiorb. right = right pelvis moves inferior4. Transverse rotationa. left = rotation of pelvis to the leftb. right = rotation of pelvis to the rightH. Role of Pelvis During Walking1. Pelvic tilt2. Pelvic rotation3. Anterior tilt during swing phase4. Posterior tilt during stance phaseI. Spinal Misalignments1. Lordosisa. Exaggerated lumbar curvatureb. Weak abdominalsc. Anterior pelvic tiltd. Bad posturee. Pregnancyf. Over-training extreme lumbar (hyperextension)J. Effects of Backrest1. Increases lordotic curvea. pelvic tilt2. Prevent Unshaped curvature of the spineK. Muscles that Move the Pelvic Girdle1. Spinea. rectus abdominisb. ext/int obliquesc. erector spinaed. quadratus lumborum2. Hipa. flexorsb. extensorsc. abductorsL. Rectus Abdominis1. Origin: pubic symphysis2. Insertion: ribs3. Action: flexion of spineM. External & Internal Obliques1. Actionsa. both do pelvic rotation posteriorb. lumbar flexion and rotationc. R side = lat flex to R and Lat Rot to Ld. L side = lat flex to L and Lat Rot to RN. Erector Spinae Muscles1. AKA sacrospinalis2. Group of musclesa. iliocostalisb. longissimussc. spinalis3. Actions: anterior pelvic rotationO. Quadratus Lumborum1. Actionsa. lateral flex same sideb. stabilizes pelvisc. anterior pelvic rotationP. Hip Muscles1. Flexorsa. Action: flex and ant pelvic rot2. Extensorsa. Action: post pelvic rot3. Abductorsa. Action: ant pelvic rotQ. Anterior/Posterior Rotation1. Anterior Agonistsa. iliopsoas, rectus femoris, sartorius2. Posterior Agonistsa. Hamstrings, biceps femoris, semitendinosis, semimembranosus, glut