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Bones of the lower limb
Fascia, vessels, and nerves of the lower limb
Anatomy of the anterior and medial thigh
Muscles of the gluteal region and posterior thigh
Vessels and nerves of the gluteal region and posterior thigh
Anatomy of the popliteal fossa
Anatomy of the leg
Anatomy of the foot
Anatomy of the hip joint
Anatomy of the knee joint
Anatomy of the tibiofibular joints
Joints of the ankle and foot
Anatomy clinical correlates: Hip, gluteal region and thigh
Anatomy clinical correlates: Knee
Anatomy clinical correlates: Leg and ankle
Anatomy clinical correlates: Foot
Anatomy of the hip joint
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Daniel Afloarei, MD
Jennifer Montague, PhD
Kaia Chessen, MScBMC
If you have ever wanted to know about the new ‘hip joint’ in town, look no further than the hip joint!
The hip joint is a large, strong joint connecting the pelvis to the lower limb. Let's take a closer look!
The hip joint is a synovial ball and socket joint, where the head of the femur forms approximately two thirds of a sphere, and it articulates with the cup-like acetabulum of the hip bone.
The femoral head is not entirely round, as it has depression on top of it which is called the fovea for the ligament of the head of the femur.
Except for the fovea, the femoral head is also covered entirely in articular cartilage which facilitates smooth movement and prevents bone erosion as it slides within the acetabulum.
The acetabulum, on the other hand, is a bowl like structure on the lateral aspect of the hip bone, and you might remember it is formed by the fusion of the ilium, ischium, and pubis.
The acetabulum is surrounded on the outside by a margin that’s incomplete inferiorly, where the acetabular notch is situated; this makes it look like a bowl with a broken rim.
On the outside of the acetabulum margin, there’s the acetabular labrum, where labrum is a fancy word for lip, which continues over the acetabular notch with the transverse acetabular ligament.
The labrum increases the surface area of the acetabulum to allow more than half of the femoral head to fit within the acetabulum for stability.
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