Hip Joint Flashcards

1
Q

What is the hip joint?

A

A ball and socket, multiaxial, synovial joint.

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2
Q

What articulates to form the hip joint? (Articular surfaces)

A

Acetabulum and Head of Femur

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3
Q

Hip joint location

A

Anterior-lateral to gluteal region
Inferior to iliac crest
Superior to greater trochanter of femur

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4
Q

What is the acetabulum?

A

It is the cup-shaped socket/depression on the inferio-lateral aspect of the pelvis, articulating with the femur head.

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5
Q

Hip joint function

A

Stability and weight-bearing

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6
Q

Acetabular labrum

A

A fibrocartilaginous collar that deepens the acetabular cavity

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7
Q

The lunate surface of the acetabulum of the pelvis and the femur head are covered with hyaline cartilage except at…

A

… the fovea

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8
Q

Function of hyaline cartilage at lunate surface of acetabulum and head of femur

A

Makes the surface slippery for easy movement

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9
Q

Both the acetabulum and head of femur articular cartilage are thicker at…

A

…the places of weight bearing.

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10
Q

The non-articular acetabular fossa is covered by…

A

… loose connective tissue

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11
Q

What bridges the acetabular notch?

A

Transverse Acetabular Ligament

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12
Q

Functions of the ligaments of the hip joint

A

To increase stability

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13
Q

Ligaments of the hip joint can be divided into…

A

Two groups – intracapsular and extracapsular

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14
Q

Intracapsular ligament of the hip joint

A

The only intracapsular ligament is the ligament of head of femur. It is a relatively small structure, which runs from the acetabular fossa to the fovea of the femur.

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15
Q

The ligament of the head of the femur encloses an artery. What is it?

A

It encloses a branch of the obturator artery (artery to head of femur), a minor source of arterial supply to the hip joint.

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16
Q

How many extracapsular ligaments are in the hip joint?

A

Three

17
Q

Extracapsular ligaments of the hip

A

Iliofemoral ligament
Pubofemoral ligament
Ischiofemoral ligament

18
Q

Iliofemoral ligament

A
  • Also called Y ligament of Bigelow
  • Strongest of the three ligaments
  • Arises from the anterior inferior iliac spine and then bifurcates before inserting into the intertrochanteric line of the femur.
  • Prevents hyperextension of the hip joint
19
Q

Pubofemoral ligament

A
  • Spans between the superior pubic rami and the intertrochanteric line of the femur, - Reinforces the capsule anteriorly and inferiorly.
  • It has a triangular shape
  • Prevents excessive abduction and extension.
20
Q

Ischiofemoral ligament

A
  • Spans between the body of the ischium and the greater trochanter of the femur
  • Reinforces the capsule posteriorly.
  • It has a spiral orientation
  • Prevents hyperextension and holds the femoral head in the acetabulum.
21
Q

Movements of the hip joint

A
Flexion
Extension
Abduction
Adduction
Medial rotation
Lateral rotation
22
Q

Hip flexion

A

PIQS

Pectineus
Iliopsoas
Quadriceps (Rectus Femoris)
Sartorius

23
Q

Hip Extension

A

GSS Bee Hamstrings

Gluteus Maximus
Semitendinosus
Semimembranosus,
Biceps femoris

The hamstrings

24
Q

Hip Abduction

A

God’s Got Pastor Tolu (if taken away)

Gluteus medius
Gluteus minimus
Piriformis
Tensor fascia latae

25
Q

Hip Adduction

A

Adductors P and G

Adductor longus
Adductor brevis
Adductor magnus
Pectineus
Gracilis
26
Q

Hip lateral rotation

A

Biceps femoris
Gluteus maximus

And deep lateral rotators:
Piriformis
Obturators
Gemilli 
Quadratus femoris.
27
Q

Hip medial rotation

A

Same as abduction without Pastor (Piriformis)

28
Q

Neurovascular supply of hip joint

A

Arterial supply: Medial & Lateral circumflex femoral arteries
Artery to head of femur
Superior and Inferior Gluteal arteries

Innervated primarily: Sciatic nerves, femoral nerves & obturator nerves

29
Q

Who is responsible for the majority of the arterial supply of the hip?

A

The medial circumflex femoral artery