Lower Limb KinesiologyLower Limb Kinesiology
Amir H. BakhtiaryAmir H. Bakhtiary
Ph.D., PTPh.D., PT
Associate ProfessorAssociate Professor
Physiotherapy DepartmentPhysiotherapy Department
Rehabilitation facultyRehabilitation faculty
Semnan Medical Sciences Semnan Medical Sciences UniversityUniversity
PelvisPelvisA ring of bone providing articulation for the lower limbs with the trunk.A ring of bone providing articulation for the lower limbs with the trunk.
Questions and SubjectsQuestions and Subjects What is the structure of the Sacroiliac Joint?What is the structure of the Sacroiliac Joint? What is the Mechanical Role of Pelvis?What is the Mechanical Role of Pelvis? What is the factors of Sacroiliac Joint What is the factors of Sacroiliac Joint
Stability?Stability? What is the Movement of Sacroiliac Joints?What is the Movement of Sacroiliac Joints? What is the Clinical Importance of Sacroiliac What is the Clinical Importance of Sacroiliac
Joint?Joint? How to we may test the accessory Movement How to we may test the accessory Movement
of Sacroiliac Joints?of Sacroiliac Joints? What is the Biomechanics role of Sacroiliac What is the Biomechanics role of Sacroiliac
Joints?Joints? What is the Symphysis Pubis?What is the Symphysis Pubis? What is the Pelvic Motions?What is the Pelvic Motions?
What is the Mechanical Role of What is the Mechanical Role of Pelvis?Pelvis?
Pelvis Is Designed to Transfer of Weight from the Trunk
Lower Limbs Ischial Tuberosities
By Loosing of Mobility
Sacroiliac Joints Symphysis Pubis
Additional Roles to Transfer of Weight
Muscle AttachmentSupport the Vicers Support Birth Canal
What is the structure of the What is the structure of the Sacroiliac Joint?Sacroiliac Joint?
Synovial Joint between Illium and Sacrum.Synovial Joint between Illium and Sacrum. Due to the powerful ligaments in posteriorDue to the powerful ligaments in posterior
Anteriorly
SinovialPosteriorly
Fibrous
The SIJs are unique in that both the structure and function of these joints change significantly from birth through adulthood
Sacroiliac JointSacroiliac Joint
It is a C shape jointIt is a C shape joint In first decade of life is smooth and In first decade of life is smooth and
flatflat After puberty, a central ridge in Iliac After puberty, a central ridge in Iliac
and groove on the sacral will appearand groove on the sacral will appear
What is the factors of Sacroiliac What is the factors of Sacroiliac Joint Stability? Joint Stability?
Line of Weight Pass Anterior to the Sacroiliac JointLine of Weight Pass Anterior to the Sacroiliac Joint
Causes
Sacral Move Downward into the Pelvis
Lower PartsTilt Upward
The Bony Surface does Not Bear the
Weight
The Weight is Suspended by the Ligaments
Slight Wedging of the Auricular Surface Resist Rotation and Gliding Movement of
Sacrum
What is the Movement of What is the Movement of Sacroiliac Joints?Sacroiliac Joints?
A little Movement is Allowed by Joint Surface and A little Movement is Allowed by Joint Surface and LigamentsLigaments
There is Slight Gliding and Rotational MovementThere is Slight Gliding and Rotational Movement
Sacroiliac Joint movement During Sacroiliac Joint movement During ChildbirthChildbirth
Nutation and Counternutation Nutation and Counternutation MovementMovement
What is the Clinical Importance of What is the Clinical Importance of Sacroiliac Joint?Sacroiliac Joint?
Sudden Bending ForwardSudden Bending Forward
Tear the Tear the Posterior Posterior LigamentLigament
Dislocate Dislocate the the
Joint Joint surfacesurface
Painful Painful Trunk Trunk
FlexionFlexionManipulation often Produce a Manipulation often Produce a
Successful ResultSuccessful Result
How How do do we may test the accessory we may test the accessory Movement of Sacroiliac Joints?Movement of Sacroiliac Joints?
These Movements are Limited by the Powerful Ligaments.These Movements are Limited by the Powerful Ligaments.
To Test These To Test These MovementsMovements
Prone PositionProne Position
Pressure by the Heel of Pressure by the Heel of the Handthe Hand
On the Apex of Sacrum On the Apex of Sacrum DownwardDownward
Small Rotation of the Small Rotation of the SacrumSacrum
What is the Biomechanics role of What is the Biomechanics role of Sacroiliac Joints?Sacroiliac Joints?
Two Trabecular Systems From Sacrum to PelvisTwo Trabecular Systems From Sacrum to Pelvisand Then to the head of Femurand Then to the head of Femur
Trabecular Trabecular sysemsysem
نحوه انتقال وزن در ساکروایلیاک و مفصل
ران چگونه است؟
What is the Symphysis What is the Symphysis Pubis?Pubis?
Secondary Cartilaginous Joint.Secondary Cartilaginous Joint. A Thin Layer of Hyaline Cartilage Cover the Bone.A Thin Layer of Hyaline Cartilage Cover the Bone. This Cartilage is Joined to the Opposite Cartilage by a This Cartilage is Joined to the Opposite Cartilage by a
Fibrocartilage Interpubic Disc.Fibrocartilage Interpubic Disc. Two Ligaments Support the Joint:Two Ligaments Support the Joint:
1) Superior Pubic Ligament1) Superior Pubic Ligament
2) Arcuate Pubic Ligament2) Arcuate Pubic Ligament The anterior portion of the joint is reinforced by The anterior portion of the joint is reinforced by
aponeurotic expansions from a number of muscles that aponeurotic expansions from a number of muscles that cross the jointcross the joint
No Normally MovementNo Normally Movement Pathology:Pathology:
Slipping of one pubic Slipping of one pubic to other (Osteitis Pubis)to other (Osteitis Pubis)
The aponeurotic extensions of the muscles crossing the anterior aspect of the symphysis pubis
What is the Pelvic Motions?•open kinematic chain motions
•anterior tilt : ASIS moves anteriorly and inferiorly •posterior tilt : ASIS moves posteriorly and superiorly •lateral tilt to the left/right : one ASIS is higher than the other (Pelvic list during Gait)•Lateral forward and Backward displacement
www.pt.ntu.edu.tw-hmchai-Kines04-KINspine-PelvicGirdle.files-PelvisWBline.png.url
The pelvis lists downward (obliquity) to increase the effective leg length at toe-off and heel-strike
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