The Hip Joint and Anterior Thigh Flashcards
what type of joint is the hip joint?
a ball and socket synovial joint
why is the hip joint more stable than the shoulder joint?
strong ligaments and hip joint capsule
what is the acetabular labrum? What is its function?
A horeshoe shaped fibrocartilaginous ring around the acetabulum which increases its depth. The increase in depth provdes a larger articular surface, furter improving joint stability.
Label the 3 main ligaments of the hip joint
- iliofemoral ligament
- pubofemoral ligament
- ischiofemoral ligament
what does the iliofemoral ligament prevent?
hyperextension of the hip joint
what does the pubofemoral ligament prevent?
hyperabduction of the hip joint
identify the muscles labelled 1-3
- iliacus
- psoas major
- pectineus
what is the origin and attachment of the pectineus muscle?
origin- pubis bone
attachment - femur
what movement at the hip joint do these muscles permit?
flexion
The extensors of the hip are arranged into 3 functional groups:
- gluteus maximus main extensor
- hamstrings (comprised of 3 muscles)
- posterior part of adductor magnus
the adductor compartment of the thigh is mostly supplied by which nerve?
obturator nerve (aside from the posterior part of adductor magnus), a nerve from the lumbar plexus, which exits the pelvis via the obturator canal
what are the names of the labelled adductor muscles 1-3?
- adductor brevis
- adductor longus
- adductor magnus
label the deep gluteal muscles
maximus has been removed
- gluteus medius
- gluteus minimus
- piriformis
the adductor compartment of the thigh is supplied by branches of which plexus?
lumbar plexus
muscles involved in external rotation cross the hip joint at which side?
posterior side