9: Hip Joint

Question 1

Hip: joint type

Answer 1

Ball and socket synovial joint

Question 2

Acetabular notch

Answer 2

Notch in the rim of the acetabulum, inferiorly

Question 3

What bridges the acetabular notch

Answer 3

Transverse acetabular L

Question 4

Acetabular fossa

Answer 4

Malleable fatpad centrally located in the non-articular area of the hip joint, permits positional changes of femoral head in hip movements

Question 5

Two things the articular capsule attaches to

Answer 5

Edge of acetabulum, neck of femur

Question 6

Two types of fibers in the articular capsule

Answer 6

Circular around neck, longitudinal forming a retinaculum

Question 7

Three intrinsic ligaments in the articular capsule of the hip

Answer 7

Iliofemoral L, pubofemoral L, ischiofemoral L

Question 8

Function of the three intrinsic ligaments

Answer 8

All prevent hyperextension, pubofemoral also prevents hyperabduction

Question 9

What areas of the joint capsule are strengthened by each intrinsic ligament

Answer 9

Iliofemoral: anterior aspect
Pubofemoral: anterior and inferior aspect
Ischiofemoral: posterior aspect

Question 10

Three things the iliofemoral L attaches to

Answer 10

AIIS, acetabular rim, intertrochanteric line

Question 11

Pubofemoral L attachments

Answer 11

Obturator crest, blends to join iliofemoral L

Question 12

Two attachments of the ischiofemoral L

Answer 12

Ischial part of acetabular rim, femoral neck

Question 13

Acetabular labrum

Answer 13

Fibrocartilage that deepens the socket for femoral head

Question 14

80% of labral tears caused by what?

Answer 14

Unknown cause or twisting on a weight bearing hip

Question 15

Pain and swelling in an acetabular labral tear

Answer 15

Diffuse pain, swelling not easy to see bc its joint effusion

Question 16

If anterior hip is affected by a labral tear, what is a possible side affect

Answer 16

Pinching sensation with hip flexion

Question 17

Which is more common, anterior or posterior hip dislocation?

Answer 17

Posterior

Question 18

Mechanism of an anterior hip dislocation

Answer 18

Neck of femur impinges on rim of acetabulum, levers head of femur out of acetabulum through a tear in the anterior hip capsule

Question 19

Common secondary damage done by posterior hip dislocation

Answer 19

Sciatic N damage

Question 20

Patient presentation with a hip fracture vs hip dislocation

Answer 20

Fracture: injured leg will be laterally rotated + shortened
Dislocation: injured leg will be medially rotated + not shortened