Lecture #6 - Hip Joint

The acetabulofemoral joint has an outer fibrous capsule comprising _______ major ligaments - prevents hyper movements.

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_______ - lip that adds depth to the socket.

Acetabular labrum

which muscles are involved in flexion of the hip joint?

Anterior muscles.

_______ hip fracture - proximal segment is abducted because gluteus medius and minimus on top (those abductors) are pulling that loose fragment up.

Subtrochanteric

The primary blood supply for the head of the femur will be the _______ artery.

medial circumflex femoral note: - (has a close relationship with the femoral neck) - branch off deep artery of the thigh (profundal femoris artery) - which is a branch off of the femoral artery.

Often times in dislocation of the femur or rupture of the synovial capsule there is tearing of that acetabular labrum. - may also rupture ligament and inside ligament is branch of _______ artery.

obturator

In most cases the sciatic nerve will emerge from the pelvis inferior to the _______. Also emerging are the inferior gluteal artery and nerve. - will supply the gluteus maximus

piriformis note: - Above piriformis is the superior gluteal artery and nerve.

_______ ligament (also known as Y ligament - somewhat y shaped) - strongest ligament in body. - will help prevent hyperextension of the hip joint.

- Iliofemoral

Which muscle will be the primary hip flexor?

- Iliopsoas muscle

_______ - Binds the floor of the acetabulum with the femoral head - helps keep femur in place - ball inside socket.

- Ligament of head of femur (ligamentum teres capitis femoris)

- _______ are the primary support for joints - _______ are the secondary support for joints.

- Muscles - Ligaments

Falling and breaking hip, usually means intracapsular fracture of the neck, in which case the _______ artery is in danger of being ruptured.

- medial circumflex femoral

Lateral Rotators of the thigh include:

- piriformis - superior gemellus - obturator internus - inferior gemellus - quadratus femoris

The gluteus maximus is attached to the _______ ligament underneath.

- sacrotuberous

_______ - very powerful extensor of the hip, when the hip is already flexed.

Gluteus maximus

_______ hip fracture - within the joint capsule - the neck is damaged and that is when the medial circumflex femoral is in danger. (fibrous capsule with ligaments may not be damaged).

Intracapsular

_______ ligament - will also help with preventing hyperextension. - Will also help prevent some medial rotation

Ischiofemoral

Which muscles are involve in abduction and medial rotation of the hip?

Lateral muscles.

Which muscles are involve in adduction and flexion of the hip?

Medial muscles.

which muscles are involved in extension and lateral rotation of the hip joint?

Posterior muscles.

_______ ligament prevents hyperabduction of the hip joint.

Pubofemoral

Gluteus medius and gluteus minimus - powerful _______ of the hip joint in the thigh.

abductors

_______ - helps to give secondary blood supply to the head of the femur.

acetabular branch of obturator a.

Hip Joint, also called _______ joint: - Forms a synovial joint, will have a fibrous capsule and a deeper synovial capsule with synovial fluid inside. - Extremely mobile joint

acetabulofemoral

_______: Sciatic nerve is impinged upon as it emerges from the pelvis.

sciatic n. entrapment (Sciatica)

From dorsogluteal approach to a Intramuscular Gluteal Injection, the safest area to inject would be the _______ quadrant.

upper lateral note: - do not want to go above iliac crest because then will be in lumbar region and can perforate that posterior abdominal wall.