HIP Joint

Formed by:

  • Acetabulum of Hip Bone
  • & Head Of The Femur

Hip Bone
formed by:

  1. Ileum
  2. Ischium
  3. Pubis


  • superior (upper) part of the Hip bone.
  • Fan shaped bone


  • inferior posterior part of the hip bone
  • Occupy 2/5th part of the acetabulum
  • Supports all weight of the body during sitting position.


  • inferior anterior part of the hip bone.
  • It occupy 1/5th part of the acetabulum.


  • Articular surface (Horse shoe)
  • Act as socket of Hip joint Outer aspect of coxae
  • Hollow hemisphere 5cm dia Downward, Forward, Laterally

Glenoidal Labrum

  • fibro cartilaginous rim attached to the margin of the acetabulum
  • it deepens cavity protects the edge of the bone fills up the inequalities of its surface.
  • It bridges over the notch


  • long bone
  • two ends
  • shaft.
  • 25% of the body length.

Femoral head

  • Three quarter of sphere
  • Mounted on short neck (125-140 degree)
  • Transverse rotations >> angular movement of shafts

Characteristic of Hip joint

  • Synovial joint / diarthrosis
  • Articular surfaces
  • Glenoidal Labrum
  • Synovial capsule
  • Synovial membrane
  • Bursa
  • Articular ligament

Articular surfaces

  • Ball
  • Socket

Fibrous capsule

  • Strong & extensive


  • Beyond acetabular circumference
  • Intertrochanteric line
  • Close neck & head of femur

Synovial membrane

  • extensive


  • neck & head of femur
  • ligamentum teres,
  • both surfaces of glenoidal labrum.
  • Cell >> Synovial fluid

Ligaments of the hip joint

  • Illiofemoral ligament
  • Pubo femoral ligament
  • Ischio femoral ligament.
  • Ligamentum teres.
  • Transverse ligament.

Illiofemoral ligament

  • strongest ligament of the body
  • Inverted V
  • Above: AIIS
  • Below: intertrochanteric line

Pubo femoral ligament

  • Above: obturator crest & superior ramus of the pubis
  • Below: blends with the capsule & deep surface of the vertical band of the oliofemoral ligament.

Ischio femoral ligament

  • triangular band of strong fibers
  • spring from the ischium below and behind the acetabulum, and blend with the circular fibers of the capsule.

Ligamentum teres

  • triangular, extends from fovea capitis femoris to the acetabular notch, and between these bony attachments it blends with the transverse ligament.

transverse ligament

  • portion of the glenoidal labrum (no cartilage cells among its fibers)
  • strong, flattened fibers
  • cross the acetabular notch, and convert it into a foramen through which the nutrient vessels enter the joint

Stabilizing factors of hip joint

  • Ligamentum factor
  • Bony shape
  • Muscular factor

Movements of the hip joint
1) Flexion
2) Extension
3) Adduction
4) Abduction
5) Rotation (medial and lateral)


  • Obturator
  • Medial femoral circumflex
  • Superior and inferior gluteals.


  • femoral nerve
  • sciatic nerve
  • obturatur nerve

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