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Related Concept Videos

Bones of the Lower Limb: Femur and Patella01:16

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...
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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...
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Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach
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Acetabular fixation options: notes from the other side.

José A Rodriguez1

  • 1Ranawat Orthopaedic Center, New York, New York 10021, USA.

The Journal of Arthroplasty
|June 20, 2006
PubMed
Summary
This summary is machine-generated.

Durable cement fixation relies on bone interdigitation for 10-15 years. Cementless fixation with porous titanium implants also shows excellent long-term results and durability.

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Area of Science:

  • Orthopedic surgery
  • Biomaterials science
  • Bone biology

Background:

  • Cement fixation in hip arthroplasty relies on cement interdigitation into cancellous bone and cortical support, offering durability of 10-15 years.
  • Cementless fixation using porous titanium hemispherical sockets has demonstrated excellent clinical outcomes.
  • Long-term data for uncemented sockets show high survivorship, with titanium fibermesh cups and screw fixation achieving 99% survival.

Purpose of the Study:

  • To review the principles of bone fixation for acetabular components in hip arthroplasty.
  • To compare the long-term outcomes of cemented versus cementless fixation methods.
  • To highlight the critical role of three-dimensional interlocking for durable implant fixation.

Main Methods:

  • Review of clinical results and survivorship data for cemented and various cementless acetabular fixation techniques.
  • Analysis of implant surface characteristics, including porous titanium, fibermesh, sintered beads, and plasma spray coatings.
  • Evaluation of factors contributing to long-term fixation failure and success.

Main Results:

  • Cemented fixation provides durable socket fixation for 10-15 years when proper interdigitation is achieved.
  • Cementless fixation with porous titanium sockets, including fibermesh, sintered beads, and plasma spray surfaces, shows excellent clinical results and long-term durability.
  • Titanium fibermesh cups with supplemental screw fixation report the highest survivorship (99%) at the endpoint of fixation failure.

Conclusions:

  • Both cemented and cementless fixation techniques can achieve durable acetabular component fixation in hip arthroplasty.
  • The success of cementless fixation is attributed to the porous surface of titanium implants promoting bone ingrowth.
  • A critical factor for long-term fixation, irrespective of the technique, is achieving a stable, physical, three-dimensional interlocking between the implant and the host bone.