The Hip Anatomy Mazyad Alotaibi

Joint complex Hip – ball and socket Closely associated the SIJ and lsp Movements – flex, ext, MR, LR, add and abd Joint is supplied from L3

Bones Femoral head 2/3 sphere fovea Acetabulum Covers 40% of head Neck of femur

Anterior Ligaments Capsule – complex, very thick and reinforced by : Iliofemoral ligament – –Y Pubofemoral ligament - triangular

Posterior Ligaments Ischiofemoral ligament – post Other ligaments Tranverse ligament –Crosses the acetabular notch Ligamentum Teres - intracapsular - attaches to fovea -contains blood vessel

Cartilage Hyaline cartilage- covers head of femur and acetabulum Labrum – fibrocartilage ring triangular in cross section, horse shoe shaped

Anterior Musculature Hip flexion Iliopsoas Rectus femoris Sartorius L1/2/3

Posterior Musculature Hip Extension Gluteus maximus Hamstrings S1 LR Sup and Inf Gemelli Obturator Int and Ext Quadratus Fem Piriformis

Lateral Musculature Abduction and MR Gluteus medius Gluteus minimus Tensor fascia lata and ITB L5

Medial Musculature Adductors Adductor longus, brevis and magnus Pectineus Gracilis L2/3/4

Bursa Psoas Trochanteric Gluteal (3-4)

Dermatomes L/2/3 front of hip S2 back of hip Neuro Femoral nerve passes ant- beneath inguinal lig Sciaitic passes posteriorly – below piriformis Obturator – descends thro obt foramen, med thigh

Surface Markings Greater trochanter The femoral triangle – the femoral pulse ASIS Blade and crest of ilium TO attachment of adductors Ischium