Transcript Lower Limb Kinesiology

Lower Limb Kinesiology
Amir H. Bakhtiary
Ph.D., PT
Associate Professor
Physiotherapy Department
Rehabilitation faculty
Semnan Medical Sciences University
Pelvis
A ring of bone providing articulation for the lower limbs
with the trunk.
Questions and Subjects
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What is the structure of the Sacroiliac Joint?
What is the Mechanical Role of Pelvis?
What is the factors of Sacroiliac Joint Stability?
What is the Movement of Sacroiliac Joints?
What is the Clinical Importance of Sacroiliac Joint?
How to we may test the accessory Movement of
Sacroiliac Joints?
What is the Biomechanics role of Sacroiliac Joints?
What is the Symphysis Pubis?
What is the Pelvic Motions?
What is the Mechanical Role of 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
Support the Vicers
Muscle Attachment
Support Birth Canal
What is the structure of the Sacroiliac Joint?
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Synovial Joint between Illium and Sacrum.
Due to the powerful ligaments in posterior
Anteriorly
Sinovial
Posteriorly
Fibrous
The SIJs are unique in
that both the structure
and function of these
joints change
significantly from birth
through adulthood
Sacroiliac Joint
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It is a C shape joint
In first decade of life is smooth and flat
After puberty, a central ridge in Iliac and groove
on the sacral will appear
What is the factors of Sacroiliac Joint Stability?
Line of Weight Pass Anterior to the Sacroiliac Joint
Causes
Sacral Move Downward
into the Pelvis
The Bony Surface
does Not Bear the
Weight
Lower Parts
Tilt Upward
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 Sacroiliac Joints?
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A little Movement is Allowed by Joint Surface and Ligaments
There is Slight Gliding and Rotational Movement
Sacroiliac Joint movement During Childbirth
Nutation and Counternutation Movement
What is the Clinical Importance of Sacroiliac Joint?
Sudden Bending Forward
Tear the Posterior
Ligament
Dislocate the
Joint surface
Painful Trunk
Flexion
Manipulation often Produce a Successful Result
How do we may test the accessory Movement of
Sacroiliac Joints?
These Movements are Limited by the Powerful Ligaments.
To Test These Movements
Prone Position
Pressure by the Heel of the Hand
On the Apex of Sacrum Downward
Small Rotation of the
Sacrum
What is the Biomechanics role of Sacroiliac Joints?
Two Trabecular Systems From Sacrum to Pelvis
and Then to the head of Femur
‫نحوه انتقال وزن درمفصل‬
‫ساکروایلیاک و ران چگونه است؟‬
‫‪Trabecular sysem‬‬
What is the Symphysis Pubis?
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Secondary Cartilaginous Joint.
A Thin Layer of Hyaline Cartilage Cover the Bone.
This Cartilage is Joined to the Opposite Cartilage by a
Fibrocartilage Interpubic Disc.
Two Ligaments Support the Joint:
1) Superior Pubic Ligament
2) Arcuate Pubic Ligament
The anterior portion of the joint is reinforced by aponeurotic
expansions from a number of muscles that cross the joint
No Normally Movement
Slipping of one pubic
Pathology:
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
The pelvis lists downward (obliquity) to increase
the effective leg length at toe-off and heel-strike
www.pt.ntu.edu.tw-hmchai-Kines04-KINspine-PelvicGirdle.files-PelvisWBline.png.url
‫آدرس سایت برای دانلود اسالیدها‬
http://rds.sem-ums.ac.ir/fs/files/drbakhtiary/sacroilliac
and pubis joints kinesiology.ppt