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Questions and Answers
Which combination of movements is primarily facilitated by the combined action of the gluteus maximus, gluteus medius, and gluteus minimus muscles?
Which combination of movements is primarily facilitated by the combined action of the gluteus maximus, gluteus medius, and gluteus minimus muscles?
- Hip flexion, extension, and internal rotation.
- Hip abduction, adduction, and circumduction.
- Hip extension, abduction, and internal/external rotation. (correct)
- Hip flexion, adduction, and external rotation.
Damage to the iliofemoral ligament would most significantly impact which hip movement?
Damage to the iliofemoral ligament would most significantly impact which hip movement?
- Extension (correct)
- Adduction
- Abduction
- Flexion
If a patient experiences difficulty with hip adduction following an injury, which group of muscles is most likely affected?
If a patient experiences difficulty with hip adduction following an injury, which group of muscles is most likely affected?
- Gluteal muscles
- Adductor group (correct)
- Iliopsoas group
- Quadriceps group
What is the functional significance of the arrangement of bones, ligaments, muscles, and tendons in the hip joint?
What is the functional significance of the arrangement of bones, ligaments, muscles, and tendons in the hip joint?
How do the quadriceps and hamstring muscle groups contribute to hip movement, in addition to their primary actions at the knee?
How do the quadriceps and hamstring muscle groups contribute to hip movement, in addition to their primary actions at the knee?
Flashcards
Ligamentum Teres
Ligamentum Teres
Connects the head of the femur to the acetabulum, providing a pathway for blood vessels and nerves.
Gluteal Muscles
Gluteal Muscles
A group of three muscles (maximus, medius, minimus) that primarily assist in hip extension, abduction, and internal/external rotation.
Hip Flexors
Hip Flexors
A group of muscles (iliopsoas, sartorius, pectineus, rectus femoris) that assists in bending the hip.
Hip Adductors
Hip Adductors
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Bursas
Bursas
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Study Notes
- The hip is the strongest joint in the body due to the arrangement of bones, ligaments, muscles, and tendons.
- The hip joint is a ball-and-socket joint, created where the spherical head of the femur fits into the hip's deep socket.
- The pelvis is composed of three fused bones: the ilium, ischium, and pubis.
- Groin and torso muscles attach to the pelvis. These muscles support and move the trunk, as well as the upper and lower extremities.
- The hip and pelvis bones facilitate the transfer of weight between the torso and the lower extremities.
Ligaments
- The hip and pelvis bones are supported by the following ligaments:
- Ligamentum teres
- Transverse acetabular
- Iliofemoral
- Pubofemoral
- Ischioemoral
- Inguinal
Muscle Groups
- The hip and pelvic region contain several major muscle groups.
- The largest muscle group is the gluteal muscles, including:
- Gluteus maximus - Assists in hip extension.
- Gluteus medius - Assists in hip abduction.
- Gluteus minimus - Assists in internal and external rotation.
- Muscles that assist in hip flexion:
- Iliopsoas
- Sartorius
- Pectineus
- Rectus femoris
- Hip adduction is mainly performed by the adductors or groin muscles:
- Adductor longus
- Adductor brevis
- Gracilis
- Adductor magnus
- The quadriceps and hamstrings, which form the bulk of the thigh, aid in hip movement, specifically hip flexion and hip extension, respectively.
Nerves and Bursas
- The hip and pelvis are innervated by a number of nerves.
- Dermatome: The sensory distribution of a single nerve root, providing feeling in a specific anatomical area.
- Myotome: The motor distribution of a muscle group innervated by a single nerve root, producing movement of anatomical structures.
- Bursas: Synovial sacs usually located over bony prominences, and are often irritated during intense physical activity.
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Description
The hip is the strongest joint in the body, created where the head of the femur fits into the hip's socket. Key ligaments such as the iliofemoral and pubofemoral support the hip and pelvis. Major muscle groups, including the gluteal muscles, facilitate hip extension and abduction.
