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Ankle Joint

Ankle Joint

The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...

Bones of the Lower Limb: Femur and Patella

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The femur is the body's longest and strongest bone spanning the thigh region. Its head articulates with the acetabulum of the hip bone to form the hip joint. A minor indentation on the medial side of the femoral head, called the fovea capitis, serves as the site of attachment for the ligament of the head of the femur. This weak ligament spans the femur and acetabulum and supports the hip joint. The narrowed region below the head is the neck of the femur. The inclination angle between the neck...

Knee Joint

Knee Joint

The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
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Bones of the Lower Limb: Tibia and Fibula

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The tibia is the main weight-bearing bone of the lower leg. It is larger than the fibula with which it is paired. The tibia is also the second longest bone in the body and is located right below the skin. The proximal end of the tibia forms the medial and the lateral condyle, which articulates with the condyles of the femur to form the knee joint. Between the articulating surfaces is the irregular elevated area known as the intercondylar eminence that serves as the inferior attachment point for...

Structural Joints: Synovial Joints

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Synovial joints are the most common type of joint in the body. A key structural characteristic for a synovial joint is the presence of a joint cavity. This fluid-filled space is where the articulating surfaces of the bones contact each other. Also, unlike fibrous or cartilaginous joints, the articulating bone surfaces at a synovial joint are not directly connected to each other with fibrous connective tissue or cartilage. This gives the bones of a synovial joint the ability to move smoothly...

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Related Experiment Video

Updated: Jun 20, 2026

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve

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Acetabular options: notes from the other side.

Kristoff Corten¹, Keegan Au, Robert B Bourne

¹London Health Sciences Centre, London, Ontario, Canada.

|September 16, 2009

Summary

This summary is machine-generated.

The hip arthroplasty socket is the weakest link, often requiring revision due to loosening or wear. Cementless sockets show comparable long-term survival to cemented options and offer advantages in versatility and surgical ease.

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Area of Science:

Orthopedic surgery
Biomaterials science
Medical device engineering

Background:

The acetabular component (socket) is a critical factor in total hip arthroplasty (THA) success.
Revision rates for THA sockets exceed those for stems, primarily due to aseptic loosening and polyethylene wear.
Both cemented and cementless socket designs have evolved, with cementless fixation now dominating primary THA (>90% globally).

Purpose of the Study:

To evaluate the current status and future directions of acetabular components in primary total hip arthroplasty.
To compare the long-term survivorship and performance of cemented versus cementless THA sockets.
To identify key factors influencing the success of acetabular components in THA.

Main Methods:

Review of long-term prospective data from high-volume centers on cementless THA sockets.
Analysis of national registry data to identify trends and revision indications for THA sockets.
Examination of evolving design features in cementless sockets, including porosity, bearing options, and locking mechanisms.

Main Results:

Cementless sockets demonstrate excellent and equivalent long-term survivorship compared to cemented implants.
Cementless sockets offer advantages in surgical technique ease and speed.
Acetabular component survivorship is significantly influenced by patient factors (sex, age, diagnosis) and bearing couple selection.

Conclusions:

The THA socket remains the weakest link, necessitating continued research and development.
Cementless fixation is a reliable and versatile option for primary THA acetabular components.
Further randomized controlled trials are needed to assess novel cementless socket designs and their long-term outcomes.