SI JOINT KINEMATICS(BIOMECHANIS OF SPINE)Physiotherapy Tutorial
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summary of the video with the time for reference:

1.Classification 1:05
-symmetrical
-nutation
-counter nutation
-assymetrical
-torsion

2.Nutation 2:13
-sacral promontary moves anteriorly and coccyx moves posteriorly
-Asis moves superiorly and posteriorly
-combination of both movements

3.Counter nutation 4:08
-sacral promontary moves posteriorly and coccyx moves anteriorly
-Asis moves anteriorly and inferiorly
-combination of both movements

4.Assymetric motion-Pelvic torsion 5:30
-occurs during ambulation
-pelvic movements are in oppostie direction
-In closed kinematic chain movement will happen atv pubic symphysis and si joint both