Podcast
Questions and Answers
What is the movement of the femur during abduction in the sagittal plane?
What is the movement of the femur during abduction in the sagittal plane?
Which of the following muscles is NOT a primary motor muscle for hip abduction?
Which of the following muscles is NOT a primary motor muscle for hip abduction?
What is the limiting factor for hip adduction?
What is the limiting factor for hip adduction?
In an open kinetic chain, what is the movement of the femoral head on the acetabulum?
In an open kinetic chain, what is the movement of the femoral head on the acetabulum?
Signup and view all the answers
What is the shape of the femur in the hip joint?
What is the shape of the femur in the hip joint?
Signup and view all the answers
Which of the following muscles is a primary motor muscle for hip adduction?
Which of the following muscles is a primary motor muscle for hip adduction?
Signup and view all the answers
What is the direction of the roll and glide during hip movements?
What is the direction of the roll and glide during hip movements?
Signup and view all the answers
What limits the extension of the knee?
What limits the extension of the knee?
Signup and view all the answers
What type of joint is the hip joint?
What type of joint is the hip joint?
Signup and view all the answers
What is the function of the acetabular labrum?
What is the function of the acetabular labrum?
Signup and view all the answers
In which direction is the acetabulum normally directed?
In which direction is the acetabulum normally directed?
Signup and view all the answers
What is the name of the ligament that is technically part of the labrum?
What is the name of the ligament that is technically part of the labrum?
Signup and view all the answers
What is the normal angle of inclination between the neck and the shaft of the femur?
What is the normal angle of inclination between the neck and the shaft of the femur?
Signup and view all the answers
What is the term for the type of movement where the hip joint works in non-weight bearing during open kinematic chain movements?
What is the term for the type of movement where the hip joint works in non-weight bearing during open kinematic chain movements?
Signup and view all the answers
What type of joint stability does the hip joint have?
What type of joint stability does the hip joint have?
Signup and view all the answers
What are the static stabilizers of the hip joint?
What are the static stabilizers of the hip joint?
Signup and view all the answers
Which muscle is a primary motor muscle for external rotation of the femur?
Which muscle is a primary motor muscle for external rotation of the femur?
Signup and view all the answers
What is the function of the Pelvitrocantereous Muscles during internal rotation?
What is the function of the Pelvitrocantereous Muscles during internal rotation?
Signup and view all the answers
What is the role of the Gluteus Maximus muscle during external rotation?
What is the role of the Gluteus Maximus muscle during external rotation?
Signup and view all the answers
Which ligament is responsible for limiting internal rotation?
Which ligament is responsible for limiting internal rotation?
Signup and view all the answers
What occurs at the tip of the foot during external rotation?
What occurs at the tip of the foot during external rotation?
Signup and view all the answers
Which muscle is a secondary motor muscle for internal rotation?
Which muscle is a secondary motor muscle for internal rotation?
Signup and view all the answers
What limits external rotation of the femur?
What limits external rotation of the femur?
Signup and view all the answers
Which muscle is NOT a primary motor muscle for internal rotation?
Which muscle is NOT a primary motor muscle for internal rotation?
Signup and view all the answers
What is the function of the Acetabular Labrum in the hip joint?
What is the function of the Acetabular Labrum in the hip joint?
Signup and view all the answers
Which ligament directly connects the head of the femur to the acetabulum?
Which ligament directly connects the head of the femur to the acetabulum?
Signup and view all the answers
What is the movement of the femoral head during flexion in the hip joint?
What is the movement of the femoral head during flexion in the hip joint?
Signup and view all the answers
Which of the following muscles is involved in the kinetics of flexion in the hip joint?
Which of the following muscles is involved in the kinetics of flexion in the hip joint?
Signup and view all the answers
What is the characteristic of the contact area of the hip joint during the gait cycle?
What is the characteristic of the contact area of the hip joint during the gait cycle?
Signup and view all the answers
What is the function of the Ligamentum Teres in the hip joint?
What is the function of the Ligamentum Teres in the hip joint?
Signup and view all the answers
What is the characteristic of the osteokinematics of the hip joint during flexion?
What is the characteristic of the osteokinematics of the hip joint during flexion?
Signup and view all the answers
Which of the following is a dynamic stabilizer of the hip joint?
Which of the following is a dynamic stabilizer of the hip joint?
Signup and view all the answers
What is the amplitude of internal rotation in the hip joint?
What is the amplitude of internal rotation in the hip joint?
Signup and view all the answers
During flexion of the hip joint, what is the direction of the arthrokinematic movement?
During flexion of the hip joint, what is the direction of the arthrokinematic movement?
Signup and view all the answers
What is the lumbopelvic rhythm characterized by?
What is the lumbopelvic rhythm characterized by?
Signup and view all the answers
In an open kinetic chain (OKC), what is the moving part of the hip joint?
In an open kinetic chain (OKC), what is the moving part of the hip joint?
Signup and view all the answers
What is the term for the movement of the acetabulum on the femur in a closed kinetic chain (CKC)?
What is the term for the movement of the acetabulum on the femur in a closed kinetic chain (CKC)?
Signup and view all the answers
What is the 'open-packed position' of the hip joint?
What is the 'open-packed position' of the hip joint?
Signup and view all the answers
What is the direction of the arthrokinematic movement during abduction of the hip joint?
What is the direction of the arthrokinematic movement during abduction of the hip joint?
Signup and view all the answers
What is the movement of the pelvis during internal rotation of the hip joint?
What is the movement of the pelvis during internal rotation of the hip joint?
Signup and view all the answers
Study Notes
Hip Joint/Femoroacetabular Joint
- Synovial "ball and socket" joint (spheroidal joint) with 3 degrees of freedom: flexion/extension, abduction/adduction, and internal/external rotation.
Function
- Supports the load of the head, arms, and trunk
- Transmits force
- Facilitates locomotion
- Works in non-weight bearing (NWB) during open kinematic chain (OKC) movements and in weight bearing (WB) during closed kinematic chain (CKC) movements
Anatomical Reminder: Pelvis
- Composed of 2 coxa or innominate bones
- Each innominate bone is composed of 3 fused bones: pubis, ilium, and ischium
- Articulating surface in the hip joint: acetabulum, which is part of the pelvis
Acetabulum
- The head of the femur articulates with the acetabulum
- The acetabulum is normally directed laterally, anteriorly, and inferiorly
- The acetabulum creates the hip joint (spheroid joint)
- Acetabular labrum increases congruence (stability)
- Transverse acetabular ligament: technically part of the labrum, but contains no chondrocytes
Anatomical Variations and Influence on Movement
- The angle of inclination between the neck and the shaft of the femur can vary between humans (normal 120-125º, coxa vara 105º, coxa valga 140º)
- Changes in the angle of inclination of the head of the femur can influence movement
Hip Joint Stability
- One of the most stable synovial joints
- Static stabilizers (passive structures):
- Acetabular labrum (fibrocartilage) and transverse acetabular ligament
- Strong capsule
- Iliofemoral ligament
- Dynamic stabilizers: muscles and myofascial tissue
Arthrokinematics of the Hip
- Open kinetic chain (NWB): femoral head moves on acetabulum, femur=CONVEX
- Roll and glide: opposite directions
- Abduction: femur rolls superior/glides inferior
- Adduction: femur rolls inferior/glides superior
Kinetics of Hip Abduction
- Primary motor muscles: gluteus medius, tensor of the fasciae latae (TFL)
- Secondary motor muscles: gluteus minimus, piriformis, gluteus maximus fibers, obturator externus and gemellius superior and inferior, sartorius
Kinetics of Hip Adduction
- Primary motor muscles: adductor magnus, adductor longus, adductor brevis, gracilis
- Secondary motor muscles: quadratus femoris, obturator externus and obturator internus
Kinetics of Flexion
- Primary motor muscles: psoas/iliacus, rectus femoris, sartorius, TFL
- Secondary motor muscles: none
Kinetics of Extension
- Primary motor muscles: gluteus maximus, gluteus medius, gluteus minimus, piriformis, semitendinosus, semimembranosus, biceps femoris
- Secondary motor muscles: none
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz covers the anatomy and function of the hip joint, including its structure, degrees of freedom, and role in supporting the body and facilitating movement.
