1.2.5.6. Muscles of Medial Rotation of the Hip Joint Flashcards
What movements can be carried out at the Hip Joint?
- Flexion
- Extension
- Abduction
- Adduction
- Lateral Rotation
- Medial Rotation
- Circumduction
What are the main Muscles of Medial Rotation of the Hip Joint?
- Gluteus Medius Muscle
- Gluteus Minimus Muscle
- Semitendinosus Muscle
- Semimembranosus Muscle
Where is the Gluteus Medius Muscle located?
In between the Gluteus Maximus and the Gluteus Minimus Muscles
How is the Gluteus Medius Muscle described?
Fan-Shaped, similar to the Gluteus Minimus Muscle
Where does the Gluteus Medius Muscle originate from?
Gluteal Surface of the Ilium
Where does the Gluteus Medius Muscle attach distally?
Lateral Surface of the Greater Trochanter of the Femur
What is the function of the Gluteus Medius Muscle?
- Abduction of the Lower Limb at the Hip Joint
- Medial Rotation of the Lower Limb at the Hip Joint
- During Locomotion, it secures the Pelvis, preventing Pelvic Drop of the opposite Limb
- The Posterior Fibers are thought to produce a small amount of Lateral Rotation of the Lower Limb at the Hip Joint
What is the innervation of the Gluteus Medius Muscle?
The Superior Gluteal Nerve
Where is the Gluteus Minimus Muscle located, in relation to the other Gluteal Muscles?
- It is the Deepest and Smallest of the Superficial Gluteal Muscles (Gluteus Maximus and Medius Muscles)
- It is Superficial to the Deep Gluteal Muscles (Piriformis, Gemelli)
What is the Gluteus Minimus Muscle’s shape and function similar to?
Gluteus Medius Muscle, it is also Fan-Shaped
Where does the Gluteus Minimus Muscle originate from?
Ilium
Where does the Gluteus Minimus Muscle attach distally?
It converges to form a Tendon, inserting into the Anterior Side of the Greater Trochanter
What is the function of the Gluteus Minimus Muscle?
- Abduction of the Lower Limb at the Hip Joint
- Medial Rotation of the Lower Limb at the Hip Joint
- During Locomotion, it secures the Pelvis, preventing Pelvic Drop of the opposite Limb
What is the innervation of the Gluteus Minimus Muscle?
Superior Gluteal Nerve
What is located underneath the Gluteus Minimus Muscle?
Deep Gluteal Muscles (Superior to Inferior):
- Piriformis
- Obturator Internus
- Superior and Inferior Gemelli Muscles
- Quadratus Femoris
How is the Semitendinosus Muscle described?
It is a largely Tendinous Muscle
Where is the Semitendinosus Muscle located, in relation to the Biceps Femoris?
Medially
What does the Semitendinosus Muscle cover?
The majority of the Semimembranosus Muscle
Where does the Semitendinosus Muscle originate from?
Ischial Tuberosity of the Pelvis
Where does the Semitendinosus Muscle attach distally?
Medial Surface of the Tibia
What is the function of the Semitendinosus Muscle?
- Flexion of the Leg at the Knee Joint
- Extension of the Thigh at the Hip Joint
- Medially Rotation of the Thigh at the Hip Joint
- Medially Rotation of the Leg at the Knee Joint
What is the innervation of the Semitendinosus Muscle?
Tibial Part of the Sciatic Nerve
Where is the Semimembranosus Muscle located, in relation to the Semitendinosus Muscle?
Deep
Where does the Semimembranosus Muscle originate from?
Ischial Tuberosity of the Pelvis, but more Superiorly than the Semitendinosus and Biceps Femoris Muscles
Where does the Semimembranosus Muscle attach distally?
Medial Tibial Condyle
What is the function of the Semimembranosus Muscle?
- Flexion of the Leg at the Knee Joint
- Extension of the Thigh at the Hip Joint
- Medial Rotation of the Thigh at the Hip Joint
- Medial Rotation of the Leg at the Knee Joint
What is the innervation of the Semimembranosus Muscle?
Tibial Part of the Sciatic Nerve
How is the Semimembranosus Muscle described?
It is Flat and Broad
