The Hip Joint
Ball and socket synovial type joint, stable, weight bearing joint
Between the head of the femur and acetabulum of the pelvis
Joins the lower limb to the pelvic girdle
of the hip joint
- formed by parts of ilium, ischium and pubis - concave -
increases its depth
Both the acetabulum and head of femur are covered in articular cartilage, which is thicker at the places of weight bearing.
two groups –
intracapsular and extracapsular
ligament of head of femur : runs from the acetabular fossa to the fovea of the femur - a branch of obturator artery inside
: attached inferior to the anterior inferior iliac spine and intertrochanteric line - Y shaped - prevents hyperextension
: attaches iliopubic eminance and obturator membrane, blends with the articular capsule - prevents excessive abduction and extension.
: posteriorly attached to ischium and the greater trochanter - prevents excessive extension
Movements and Muscles
: Iliosoas, rectus femoris, sartorius
: Gluteus maximus, semimembranous,semitendinosus and biceps femoris
: Gluteus medius, gluteus minimus and the deep gluteals (piriformis, gemelli etc)
: Adductors longus, brevis and magnus,pectineus and gracillis
: Biceps femoris, gluteus maximus, and the deep gluteals (piriformis, gemelli etc)
: Gluteus medius and minimus, semitendinosus and semimembranosus
The degree to which flexion at the hip can occur depends on whether the knee is flexed, which relaxes the hamstrings, and increases the range of flexion.
Medial and lateral circumflex femoral arteries
Artery to head of femur
The circumflex arteries are branches of the
Superior gluteal nerve
Nerve to quadratus femoris.
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