Joints Of The Lower Limb And Glutes Flashcards
Type of joint for the hip?
- ball and socket synovial joint
- head of the femur articulates with the acetabulum of the hip bone
Acetabulum rim
-has elevated rim (incomplete in vicinity of the obturator foramen)
Acetabulum articular cartilage
- depression within the bony rim is smooth and covered with articulate cartilage
- no articular cartilage at the acetabular notch where the rim is incomplete and extends to the center (acetabular fossa)
Labrum of the acetabulum
-acetabulum is deepened by the addition of a cartilaginous lip-the labrum on the bony rim, which continues across the acetabular notch as the transverse ligament
Ligament of the head of the femur (round ligament)
- between the acetabular notch and the pit (fovea) in the head of the femur
- transmits vessels and nerves to the head of the femur
Capsule of the joint (acetabulum)
-attaches to the bone around the rim of the acetabulum except at the notch where it attaches to the transverse ligament
Capsule of the joint (femur)
- attaches laterally to the medical side of the greater trochanter, anteriorly to the intertrochanteric line, and medially just above the lesser trochanter
- posteriorly it attaches to the neck of the femur so that the lower posterior part of the neck is extra capsular
Rentinacular folds
- synovial membrane lining the capsule reflects off the capsule onto the neck of the femur in little folds
- contain blood vessels which serve the neck and head of the femur
Iliopsoas muscle
- capsule is frequently perforated/incomplete so that it communicates with a bursa under the iliopsoas muscle
- has three thickenings which extend from the hip bone to the femur in a spiral fashion
- iliofemoral lig, pubofemoral lig, ischiofemoral lig
Iliofemoral ligament
- attaches to the ilium adjacent to the anterior inferior iliac spine as it goes toward the femur
- divides into two limbs which attach high and low, respectively, to the intertrochanteric line, giving it a “Y” shape
Pubofemoral ligament
- attaches to the pubis near the obturator canal and to the femur at the lower part of the neck
- blends with the lower limb of the iliofemoral ligament
Ischiofemoral ligament
- attaches to the ischium behind and below the acetabulum
- spirals up and over the back of the capsule to attach to the greater trochanter
- some fibers blend with the upper limb of the iliofemoral ligament and other fibers become circular to form the zona orbicularis
What can you palate in the gluteal region?
- iliac crest (whole length)
- posterior superior iliac spine and the dimple over it at the level of S3
- natal cleft, 3rd sacral spine, and tip of coccyx
- gluteal fold, ischial tuberosity, and sacrotuberous ligament
Hip/innomianate bones
- two hip bones
- result of the fusion of three separate bones (ilium, pubis, and ischium)
Acetabulum
- place of union of the three parts of the hip bone
- articulates with the head of femur
Acetabular notch
-prominent open area of the acetabular margin
Acetabular fossa
-circular depression in floor of acetabulum which is continuous with the acetabular notch
Ilium What are all the structures?
- iliac crest
- tubercle of the crest
- ASIS/PSIS
- AIIS/PIIS
- greater sciatic notch
- iliac fossa
- inferior, anterior, posterior gluteal lines
Pubis What are the structures?
- body
- superior ramus and inferior ramus
- pubic crest
- pubic tubercle
- pectineal line
- obturator foramen
Ischium What are the structures?
- body
- ischial ramus
- ischial tuberosity
- ischial spine
- lesser sciatic notch
Head of femur
-articulates proximally with the hip bone at the acetabulum
Fovea
- pit on the medial surface
- attachment for ligament of the head which carries blood supply to the head of the femur
Neck of femur
-connects head to the shaft of the femur