The Pelvic Floor in Orthopedic Physical Therapy Sarah Dominguez, PT, MSPT, CLT, WCS, CMTPT

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The Pelvic Floor in Orthopedic Physical Therapy Sarah Dominguez, PT, MSPT, CLT, WCS, CMTPT 4/1/2018 The Pelvic Floor In Orthopedic Physical Therapy Sarah Dominguez, PT, MSPT, CLT, WCS, CMTPT No Disclosures Objectives 1. Understand the function of the pelvic floor in functional tasks such as walking, squatting, running, step up. 2. Understand how to consider the pelvic floor as a potential problem in spine, SIJ and hip disorders. 3. Know how to screen for pelvic floor and when to refer to a Pelvic Floor PT. 4. Learn several treatment ideas to implement in addressing the pelvic floor in orthopedic rehabilitation. 1 4/1/2018 What is the Pelvic Floor? • Group of muscles in the base of the pelvis • Works alongside the Abdominal, hip and spinal musculature • Coordinates with the Diaphragm to control intra- abdominal pressures Pelvic floor musculature • Bulbospongiosus, Ischiocavernosus, transverse perineal most superficial • Urethral sphincter, urethrovaginalis, deep transverse perineal second layer • Illiococcygeus, coccygeus, puborectalis, pubo-coccygeus (levator ani), and obturator internus make the deepest layer Pelvic Floor Superficial layers • Ischiocavernosus, bulbospongiosus, transverse perineal, deep transverse perineal, urethral sphincter, urethrovaginalis, External anal sphincter (EAS) • Share common attachments at perineal body • Provide more Sphincteric action 2 4/1/2018 Pelvic Floor Levator ani group • Deepest layer of the pelvic floor muscles • Iliococcygeus, ischiococcygeus, puborectalis, pubococcygeus, • Share tendinous attachments with obturator internus (hip ER) • Attach at coccyx, ileum, ischium and pubis Pelvic floor muscles • Type 1 and Type 2 fibers exist • Genetic factors and race influence the percentage of each type per person. Studies show that specific training can convert type 1 to type 2 and vice versa • Pelvic Floor is typically 70-80% Slow twitch (type 1) and 20-30% Fast twitch (type 2) • Fast twitch are found in higher percentage around the urethra and anus • Must maintain an active resting tone for continence • Must respond reflexively to prevent incontinence Functions of the Pelvic Floor • Supportive • Sphincteric • Sexual • Stability • Sump Pump (venous/lymphatic) 3 4/1/2018 Pelvic Floor Mechanics • Concentric Contraction: Produces a squeeze and a lift • close vaginal, urethral and anal openings • bring ischial tuberosity together • counter-nutating sacrum • bring tailbone toward pubic bone • Eccentric Contraction • Opens urethra, anal and vagina • Levator plate descends • Allows for normal function of bowel and bladder empty • Important in gait and running Pelvic floor as part of the functional system • Pelvic floor is a primary stabilizer for the pelvic girdle • Functions alongside local and global muscles for optimal motor control • Just doing Kegel exercises isn’t addressing the issue • Movement pattern compensations require us to consider the pelvic floor activity or inactivity as part of the puzzle 4 4/1/2018 Pelvic floor as part of the functional system • PFM has direct connection with Obturator internus through tendinous attachments. • It contributes to local hip control and stabilizes hip with work by the larger global muscles • Play a role in anchoring deep hip rotators and provide good hip joint mechanics and allow optimal power for the larger muscles Activity! • Palpate Posterior sling in stand with pelvic floor contraction • Palpate Obturator Internus in side lying 5 4/1/2018 Note Fascial attachments from Diaphragm to Pelvic Floor Through: Quadratus Lumborum Psoas Iliacus Obturator Internus The Amazing Diaphragm • Note how far into the thoracic cavity the diaphragm goes. The core really starts in mid-thoracic range and runs to pelvic floor. Diaphragm attachments • Xyphoid process • Internal surfaces of lower 6 ribs • Lumbar spine • Arcuate ligament arch over psoas and quadratus lumborum 6 4/1/2018 Diaphragmatic assistance with trunk control • Contributes to trunk control • Resting tone increased prior to peripheral movements • Tonically active with sustained activity • Modulates activity with respiration during peripheral activities Coordination of diaphragm and TrA • TrA and diaphragm activity linked with opposing patterns • TrA activity increases with expiration while diaphragm activity decreases • TrA activity decreases with inspiration while diaphragm activity increases Coordination of Pelvic Floor and diaphragm • Inhale: • Diaphragm actively contracts, and pulls down, expanding rib cage and belly • Pelvic Floor relaxes and descends • Exhale: • Diaphragm relaxes up, rib cage contracts, abdominals contract • Pelvic floor contracts and lifts 7 4/1/2018 Transversus Abdominus • Deepest abdominal muscle • Arises from inguinal ligament, iliac crest, thoracolumbar fascia, and inner surfaces of lower 6 ribs • Attaches into fascial plane of rectus abdominus and linea alba • Fibers of upper, middle, and lower sections of TrA lay at different orientations • Superior fibers lay superiomedially • Middle and inferior fibers lay inferiomedially at slightly different angles Internal oblique • Lies between TrA and EO • Arises from iliac crest, inguinal ligament, and thoracolumbar fascia inferior to L3 • Attach to 7-10th ribs at costochondral joints and tips of 11-12th ribs • Blend into to rectus fascia and into linea alba to pubic crest • Fibers are generally oriented in superiomedial plane • Over activity of IO presents with increased inferior rib angle or rib flaring External oblique • Largest abdominal muscle • Arises from lower 8 ribs • Interdigitates with serratus anterior and latissimus dorsi, possible attachments onto thoracolumbar fascia • Attach onto anterior iliac crest • Blend to rectus fascia and into linea alba • Fibers run generally inferomedially • Over activity presents with rigidity of rib cage or acute inferior rib angle 8 4/1/2018 Rectus abdominus • Arises from pubic crest and ligaments of pubic symphysis • Inserts into 5-7 costal cartilage and xyphoid process • Enclosed in fascial sheath formed by aponeurosis of TrA, EO and IO • Medial borders of RA connect via the linea alba, a strong fascial sheath Activity • Palpate rib angle: Acute? Obtuse? Just right? • Palpate Diaphragm with breathing Multifidus • Superficial fibers • Insert 3 vertebral levels below origin • Deep fibers • In pelvis, attaches to deep levels of thoracolumbar fascia of raphe of glut max • Connect into capsule of SIJ • Blends with Sacrotuberous ligament • More Type I fibers than Type II 9 4/1/2018 Thoracolumbar fascia • Critical structure for load transfer between trunk and lower extremities • Contains alpha-smooth muscle actin called myoblasts with contractile capability • Tension is transmitted to ligamentum flavum and assists with lumbar alignment Bony and fibrous attachments of thoracolumbar fascia Bony attachments Fibrous attachments • Iliac crest • Ligamentum flavum • PSIS • Iliolumbar ligament • Posterior sacrum • Supraspinal ligament • Sacrotuberous ligament Muscle attachments of thoracolumbar fascia • Transverse abdominus • Biceps femorus • Internal oblique • Quadratus lumborum • External oblique • Lower trap • Glut max • Multifidus • Latissimus dorsi • Erector spinae 10 4/1/2018 Palpate Multifidus • Palpate just lateral to sp’s and deep • Feel muscle swell into thumbs • Ask For Pelvic Floor contraction • Have them raise their arm Pelvic Floor Role in trunk and pelvic stability • Plays a role in feedforward and feedback mechanism of Lumbopelvic stability • Contributes to force closure of the SIJ and controls motion of the sacrum relative to the ilia • SIJ stiffness • Sacral counternutation • Contributes to control of Intra-abdominal Pressures (IAP) and tension in the thoracolumbar fascia PFM coordination with trunk musculature • Studies show PFM to be coordinated with Abdominal wall • PFM fire first, prior to abdominal wall and spinal mm. • Must contract to control IAP, but must have coordinated effort of TRA, Lumbar multifidus to provide stability with mobility of the trunk. • Dysfunction in the PFM leads to poor anchor at sacrum, tailbone and ilia for the rest of the system. 11 4/1/2018 Pelvic Floor response to varying postures • Capson et al, 2011 • N = 16 nulliparous, 22-41 yo • EMG recorded in stand, cough, valsalva, MVC and load-catching task with hyperlordosis, neutral and hypolordosis • Higher tone in PFM in stand and hypolordotic postures • Increased peak strength in hypolordotic postures for all tasks • Posture influences both contractility and power for static and dynamic tasks • Posture did not influence PFM timing for the tasks Pelvic Floor Activity with Curl UP Study by Barton, et al (2015) • 90 women in exercise class • Transabdominal US scan of PFM and Bladder • 25% (n=23 women) could not produce an appropriate lift of the Pelvic Floor • ALL 90 displayed descent of the bladder • 60% had Stress Urinary Incontinence What should we see with Curl Up? • Rib angle remains the same • Abdominal wall flattens (no doming) • Pelvis remains neutral (no posterior tilt) 12 4/1/2018 PFM Activity with Active Straight Leg Raise • Sjodahl, et al. • 16 women with PGP and 11 pain free women • sEMG recordings of PFM and Abdominal wall during ASLR • Pre-activation of PFM occurred in 91% of pain free women and only 36% of women with PGP • Women with PGP have a delated onset in both PFM and Abdominal wall recruitment • PFM should have feed forward mechanism for pelvic girdle stability What should we see with ASLR? • Observe symmetry, abdominal wall, rib angle, pelvis • Ask patient if there is a difference • Apply pressure to determine where the issue maybe PFM Activity in limb movements
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