Hip Anatomy

Question 1

The acetabular labrum increases the ___________ surface area of the acetabulum and __________ and creates a seal for the central compartment, which is part of the _____________ hip joint

Answer 1

The acetabular labrum increases the ARTICULAR surface area of the acetabulum and VOLUME and creates a seal for the central compartment, which is part of the INTRA-ARTICULAR hip joint

Question 2

Under low loads, the joint surfaces are ___________; under heavy loads, they become _________ providing ___________ surface contact

Answer 2

Under low loads, the joint surfaces are INCONGRUOUS; under heavy loads, they become CONGRUOUS providing MAXIMUM surface contact

Question 3

Femur

• __________ and __________ bone in the human body
• _____________ reduces the likelihood of bony impingement against the pelvis
• Shaft courses ___________, placing the foot closer to the ________ of the body
• Slight ___________ convexity of shaft: stress is dissipated through _________ posteriorly, stress is dissipated through __________ anteriorly, allows for greater _______ bearing

Answer 3

• LONGEST and STRONGEST bone in the human body
• FEMORAL NECK reduces the likelihood of bony impingement against the pelvis
• Shaft courses MEDIALLY, placing the foot closer to the MIDLINE of the body
• Slight ANTERIOR convexity of shaft: stress is dissipated through COMPRESSION posteriorly, stress is dissipated through TENSION anteriorly, allows for greater LOAD bearing

Question 4

Hip Angle of Inclination

• Angle within the _______ plane btw femoral ______ and medial side of femoral ________
• __________ deg. at birth
• __________ deg. = normal adults
• Coxa vara < ______ deg.
• Coxa valga > _______ deg.

Answer 4

• Angle within the FRONTAL plane btw femoral NECK and medial side of femoral SHAFT
• 140 - 150 deg. at birth
• 125 deg. = normal adults
• Coxa vara < 125 deg.
• Coxa valga > 125 deg.