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Garry Lavis Diploma of Health Science Diploma of Remedial Massage. Cert iv Fitness Advanced Diploma , Myotherapy STRUCTURE BIOMECHANICS Movement produced by The connection between distal locations of the body. the lumbar spine and


  1. Garry Lavis Diploma of Health Science Diploma of Remedial Massage. Cert iv Fitness Advanced Diploma , Myotherapy

  2. STRUCTURE BIOMECHANICS  Movement produced by  The connection between distal locations of the body. the lumbar spine and the  Approx 5 degrees rotation. pelvis.  Approx 2mm translation.  The SI Joint is a load  Vulnerable to shear during bearing joint and distribute rotation and translation. weight from the spine to  Joint compresses during the lower extremities via body the hip joints. movement.(loadbearing)  Concave sacral surface.  Although normal SIJ movement is small, it is  Convex illiac surface. essential for pain free  Highly ligamentus joint. functionality.

  3.  SIJ Dysfunction refers to the abnormal function of the SIJ, (Hypomobility or Hypermobility) at the Joint which places stresses on structures in or around it.  Therefor SIJ Dysfunction may contribute to lumbar, buttock, hamstring or groin pain. Brukner & Khan CSM 4th edition

  4. CONCAVE SACRAL SURFACE CONVEX ILIAC SURFACE https://www.youtube.com/watch?v=D6NTMgWCSaU

  5. NUTATION COUNTER NUTATION  A forward tilt/rotation  A Backwards (flexion)of the sacrum in tilt/rotation(extension) of reference to the adjacent the sacrum in reference to ilium. the adjacent ilium.  Nutation of the Sacrum is  Counter Nutation is considered a locked/ considered an unlocked loadbearing position for position and allows stability articulation of the inominate.

  6. Nutation Counternutation Locked Unlocked https://www.google.com.au/search?hl=en&site=imghp&tbm=isch &source=hp&biw=1366&bih=643&q=articulations+of+the+SIJ&oq= articulations+of+the+SIJ&g

  7. TRANSLATION GAIT.  In the normal gait cycle, combined movements occur conversely in the right and left innominate and spine.  Translation or forced closure (locking) occurs on the weight bearing side and an unlocking occurs on the opposite side during the swing phase.

  8. Integral to the biomechanics of SIJ  stability is the self locking mechanism. The ability of the SIJ to self lock, occurs  through two types of closure. Form Closure and Force Closure. Form Closure describes how specifically  shaped, closely fitting contacts provide inherent stability independent of external load. Force Closure describes how external  compression forces add additional stability. The combination of form closure and  force closure establishes stability in the sacroiliac joint.

  9. https://www.youtube.com/watch?v=D6NTMgWCSaU

  10. https://www.youtube.com/watch?v=D6NTMgWCSaU

  11. SACROTUBEROUS LONG DORSAL SACROILIAC LIGAMENT. LIGAMENT.  Sacrum to Ischial  3 rd and 4 th Sacrum to PSIS Tuberosity.  A tort or tight  A tort or tight Long Sacrotuberous Ligament Sacroiliac Ligament will will restrict nutation of the restrict counternutation of sacrum. the sacrum.  Direct attachment to the  Direct attachment to TLF biceps Femoris muscle. and Multifitus. Self Bracing

  12. STABILIZERS https://www.youtube.com/watch?v=D6NTMgWCSaU

  13.  Multifidus.  Transverse Abdominis.  Internal Oblique.  Pelvic Floor.

  14. Lumbar Hip SIJ

  15. • If it is SHORT – LENGTHEN it. • If it is HARD – SOFTEN it. • If it is LAZY – STIMULATE it. • If it is STIFF – MOBILISE it. • If is WEAK – STRENGTHEN it.

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