Hip Joint Ligaments-Biomechanics and kinesiology

Hip joint ligaments - Introduction and ligaments attached to hip joint and their functions.

1. HIP JOINT LIGAMENTS
By :
Rohini Surti
BPT 2
ND
YEAR

2. •The hip joint is typically considered to have three
reinforcing ligaments.
•There are two anterior ligament and one posterior
ligament.
•Two anterior ligaments are Iliofemoral and
Pubofemoral ligaments.
•Posterior ligaments are ischiofemoral ligament.

3. 1. ILIOFEMORAL LIGAMENT:
•It is a fan shaped ligaments that resembles inverted Y
shaped letter
•It is often referred as LIGAMENT OF BIGELOW.
•The apex of ligament is attached to anterior inferior
iliac spine and two arms of the Y fan out to attach
along the intertronchanteric line of femur.
•The superior band of Iliofemoral ligament is strongest
and thickest among the hip ligaments.
•Functions: It prevents trunk from falling backward in
standing posture.

5. 2.PUBOFEMORAL LIGAMENTS :
•It is anteriorly located, in the anterior aspect of
public ramus and passing the anterior of the
intertronchanteric fossa.
•The Iliofemoral and Pubofemoral together form Z
band on anterior capsule.
•It is triangular in shape.
•FUNCTION :It supports inferomedially to the
joint.
•It prevents excess abduction and extension.

6. 3. ISCHIOFEMORAL LIGAMENTS:
•It is posterior ligaments.
•The ischiofemoral ligament attaches posterior surface of
acetabulum rim and acetabulum labrum.
•Some of its fibres spiral around the femoral neck and blend
with circumferential fibres of capsule.
•Other fibres are arranged horizontally and attaches to the
inner surface of greater trochanter..
•FUNCTIONS:It controls internal rotation in flexion and
extension.
•The lateral arm of Iliofemoral ligament has dual control of
external rotation in both flexion and extension.

8. 4 LIGAMENTUM TERES:
•It is intra-articular but extra synovial is accessory joint
structure.
•The ligament is triangular band and attaches to peripheral
edge of acetabular notch.
•The ligament passes through the transverse acetabular
ligaments to attach the other end of fovea of femur.
•Ligamentum teres is encased in sleeve of synovial
membrane so that it doesn't communicate with synovial
cavity of joint.
•Traditionally, it has been believed that the sole purpose of
Ligamentum teres was to serve as conduit for blood supply
to femoral head.

9. •In recent studies, it is said that it plays important
role in stabilizing the hip and when injured can
contribute to symptoms.
•Beacuse of laxity, pinching of ligamentum teres
between femoral head and acetabulum was found
to be third most reason for underlying arthroscopic
surgery in athelets.

11. 5.TRANSVERSE LIGAMENT OF
ACETABULUM
•It is part of acetabulum labrum which bridge the
acetabular notch.
•The notch is thus converted into foramen which
transmit acetabular vessel & nerves to joint.
•FUNCTIONS :The transverse acetabular ligament
prevents inferior displacement of head of femur.

12. CAPSULOLIGAMENTOUS TENSION:
•Hip joint extension, with slight abduction and
medial rotation in closed packed position with
increased extension the ligaments twist around the
femoral head and neck draws head in acetabulum.
•The optimal articular contact occurs with
combined flexion,abduction and lateral rotation ,
because CAPSULOLIGAMENTOUS TENSION IS LESS.

13. •Hip joint is at greatest risk for traumatic dislocation,
when position is flexed and adducted (sitting with
cross thigh)
•In this position, a strong force up femoral Shaft
towards the hip may push the femoral Shaft
towards joint.
•Macrotraumatic injuries associated with high
impact are known to cause capsular laxity.

14. Reference book:
•Joint structure and function,5th edition.

15. THANK YOU