Hip Region (1) - Ligaments Flashcards
Ligaments and Joints
What type of joint is the Sacroiliac Joint?
Synovial joint w/ fibrous component (gliding and rotation)
What are the main supporting ligaments of the Sacroiliac Joints?
- Main Supporting Ligaments:
1) ant. and pos. sacroiliac ligaments
2) interossous sacroilliac ligament
3) sacrospinous + sacrotuberous ligament
Define ‘Nutation’
When under load, anterior sacral promentatry rotates inferiory and anteriorly
Define ‘Counternutation’
When under load, sacral promentary moves posteriorly and superiorly
What’s the result of the sacroilliac joint working properly?
Reduced stress on femur and IV discs.
What type of joint is the Pubic Symphysis.
Cartilaginous Joint
Describe the Pubic Symphysis.
Two flat bony surfaces covered in hyaline cartilage joined by inter pubic fibrocartilaginous discs.
What type of chain is the Pubic Symphysis?
Closed kinetic chain (allowing for limited movement).
What type of joint is the Hip Joint?
Ball and socket, synovial joint. (accetabular - lunate, fossa connecting to head of femur).
What is a synovial joint?
Joins bones with a fibrous joint capsule that holds synovial fluid.
What types of movement does the hip joint allow for?
flexion/extension, abduction/adduction, medial and lateral rotation and circumduction. (YOU HAVE TO LIST ALL OF THESE TO GET THE 1/2 MARK)
Illiofemoral - Attachment
ASIS + acetabular rum > Intertrochantic line
When is the Illiofemoral ligament most stable?
Tight in a closed pack position = extension, medial rotation and slight abduction.
What’s the illiofemoral’s job?
Prevention of hyper extension.
Pubofemoral - Attachment
Obturator crest > anterior to lesser trochanter
