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AHPT 604 Lower Extremity Hip Exam Study Guide
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AHPT 604 Lower Extremity HipExam Study Guide
Pelvic Girdle is? - Answer ring-like bony structure, located in the lower part of the trunk
and connects the axial skeleton to the lower limbs.
what is the innominate made up of? - Answer Ilium, Pubis, Ischium
What does the Labrum do? - Answer increases the depth of acetabulum and enhances
stability by acting as a seal
what percent is the ischium of acetabulum - Answer 40%
what percent is the illium of acetabulum - Answer 40%
what percent is the pubis of acetabulum - Answer 20%
what direction does the acetabulum face - Answer laterally and inferiorly facing
what is the acetabular fossa - Answer the non articular floor of hip
what shape is the lunate/articular area and how is it connected - Answer horseshoe
shaped and connects inferiorly by transverse acetabular ligament
how is acetabular depth measured - Answer measured by using center edge angle of
wiberg (25 degrees)
Center edge angle is? - Answer angle formed by a line drawn from the center of the
femoral head to the outer edge of the acetabular roof, and a verticle line drawn through
the center of the femoral head
Acetabular dysplasia is? - Answer abnormally shallow acetabulum
coxa profunda/acetabular protrusion is? - Answer acetabulum excessively covers
femoral head
Normal Angle of Inclination? - Answer 125 degrees normal
what is the normal alignment of hip at birth? greater than 125 degrees (usually 140) -
Answer Coxa Valga is what at birth?
Positives of Coxa Vara - Answer increased moment arm for hip abductor force
alignment may improve joint stability
Negatives for Coxa Vara - Answer increased bending moment arm increases bending
, moment.
increases shear force across femoral neck
Positives of Coxa Valga - Answer decreased bending moment arm
decreases bending moment
decreases shear force across femoral neck
Negatives of Coxa Valga - Answer decreased moment arm for hip abductor force
alignment may favor joint dislocation
Normal angle of torsion in adult - Answer 15 degrees in adult
angle of torsion at birth - Answer 32-40 degrees at birth
Anteversion is? - Answer medial rotation of foot normally 35 degrees
retroversion angle - Answer five degrees usually
Wolff's law/bone remodeling - Answer remodels in response to mechanical demands:
laid down where needed and reabsorbed where needed
one gate cycle is? - Answer one heel strike to the next foots heel strike
what does trabecular system include? (5) - Answer medial compressive system
lateral tensile system
cecondary tensile system
secondary compressive system
what connects the hip labrum - Answer connected by the acetabular ligament
what does the ligament of the head of femur (ligamentum teres) do? - Answer connects
fovea to acetabular fossa, transverse acetabular ligament and margins of acetabular
notch
what does illiofemoral ligament do - Answer limits extension, lateral rotation, and
adduction
what does ischiofemoral ligament do - Answer limits extension and medial rotation
what does pubofemoral ligament do? - Answer limits extension and abduction
what is close packed position of the hip? - Answer full extension (20 degrees beyond
neutral)
internal rotation and abduction
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