Ch.8 Hip Joint And Pelvic Girdle Flashcards
What makes the hip joint relatively stable? 3
• Bony architecture
• Strong ligaments
• Large supportive muscle
What type of joint is the hip joint?
• Ball-and-socket joint
Largest bone in the body
Femur
Head of the … connects with acetabulum of pelvic girdle
Femur
Where does the R & L pelvic joint meet at posteriorly?
Sacrum
Extension of the spinal column
Sacrum
Portions of the pelvic bone (/5)
• Ilium: upper 2/5
• Ischium: posterior and lower 2/5
• Pubis: anterior and lower 1/5
Bony landmarks: pelvic girdle
(Asis,Aiis,Ic,P,S,C,It)
• Anterior superior iliac spine (ASIS)
• Anterior inferior iliac spine (AIIS)
• Iliac crest
• Pubis
• Sacrum and coccyx
• Ischial tuberosity
Bony landmarks: Femur (HGtLtLa)
• Head
• Greater trochanter
• Lesser trochanter
• Linea aspera
Bony landmarks: Leg
Femur
Patella
Tibia
Fibula
Body movements(lower) typically involve the combination of the…
Pelvic girdle & hip joints
Pelvic girdle anterior joint
Pubis symphysis
-Amphiarthrodial joint
Pelvic girdle posterior joint
• Sacroiliac joints: sacrum between the 2 pelvic bones
2nd most mobile joint & is the connection of the acetabulum and femur
Acetabulofemoral joint
Acetabulofemoral (hip) joint acts as a … and … joint
Multiaxial (multiple direction)
Enarthrodial (ball and socket)
4 Acetabulofemoral joint ligaments
Iliofemoral ligament
Pubofemoral ligament
Ischiofemoral ligament
Teres ligament
4 Acetabulofemoral joint ligaments’ limits (importance) ⭐️ IPIT
Iliofemoral- prevents hyper extension
Pubofemoral- limits extension and abduction
Ischiofemoral ligament- limits internal rotation
Teres- limits adduction
Which Acetabulofemoral joint ligament is deep in acetabulum T
Teres ligament
2 Hip joint alignment variations
Anteversion: Abnormal or excessive forward (inward) rotation
Retroversion: Abnormal or excessive backward (outward) rotation of a structure
How many planes resulting in how many movements does the pelvic girdle move?
3 planes = 6 movements
2 pelvic girdle joints PsSj
-Pubic symphysis (amphiarthrodial joint) (A)
-Sacroiliac joints (P)
Anterior Pelvic girdle movements
Anterior pelvic rotation
• Anterior movement of upper pelvis
• Iliac crest tilts forward; anterior tilt; downward rotation
(P) Posterior pelvic rotation
• Posterior movement of upper pelvic
• Iliac crest tilts backward; posterior tilt; upward rotation
(Ll) Pelvic girdle movement
Left lateral pelvic rotation
• Left pelvis moves inferiorly
• Left pelvis rotates downward or right pelvis
rotates upward; left lateral tilt
PG Movements: Right lateral pelvic rotation
• Right pelvis moves inferiorly
• Right pelvis rotates downward or left pelvis rotates upward; right lateral tilt
PG movements: Left transverse pelvic rotation
• Counterclockwise movement
• Pelvis rotates to body’s left; right iliac crest moves anteriorly
PG Movements: Right transverse pelvic rotation
• Clockwise movement
• Pelvis rotates to body’s right;
left iliac crest moves anteriorly
HJ movements: Hip flexion
• Movement of femur straight anteriorly toward pelvis