Trends in total hip arthroplasty

Area of Science:

• Orthopedic surgery
• Biomaterials science

Background:

• Total hip arthroplasty (THA) is a common procedure for hip joint restoration.
• Advancements in bearing materials are crucial for improving THA longevity and patient outcomes.
• Concerns regarding metal ion release and adverse reactions have been raised with certain hip implant designs.

Purpose of the Study:

• To review the current developments in total hip arthroplasty focusing on highly cross-linked polyethylene (HXLPE) as a standard bearing material.
• To discuss the clinical implications and pathological considerations of metal-on-metal hip prostheses, particularly in asymptomatic individuals.

Main Methods:

• Literature review of recent advancements in hip arthroplasty materials and designs.
• Analysis of studies investigating the performance and complications of highly cross-linked polyethylene (HXLPE) liners.
• Examination of research on the long-term effects and pathology associated with metal-on-metal hip prostheses.

Main Results:

• Highly cross-linked polyethylene (HXLPE) has emerged as the preferred material for acetabular cup articulation surfaces in total hip arthroplasty due to its enhanced wear resistance.
• Metal-on-metal hip prostheses present potential risks, including adverse local tissue reactions and systemic metal ion exposure, even in asymptomatic patients.

Conclusions:

• The adoption of highly cross-linked polyethylene (HXLPE) represents a significant advancement in total hip arthroplasty, offering improved durability.
• Careful consideration and monitoring are warranted for patients with metal-on-metal hip prostheses due to potential long-term adverse effects.