Long stem femoral components for total hip replacement.

Area of Science:

• Orthopedic surgery
• Biomedical engineering

Background:

• Complex hip reconstructions often necessitate specialized femoral components with long stems.
• Defects in the proximal femur's cortex, such as those from cement removal or fractured stems, require robust solutions.

Purpose of the Study:

• To describe the application and indications for various long stem femoral components in adult hip reconstruction.
• To introduce the calcar replacement long stem component for restoring leg length and managing specific pathologies.
• To discuss the use of proximal femoral replacement long stem components in oncological resections.

Main Methods:

• Review of clinical cases utilizing standard long stem femoral components for cortical defects.
• Application of the calcar replacement long stem component in cases of calcar resorption or heterotopic ossification.
• Utilization of proximal femoral replacement long stem components following extensive proximal femur excision for malignancy.

Main Results:

• Standard long stem components effectively manage cortical defects in the proximal femur.
• The calcar replacement long stem component successfully restores leg length and addresses resorption issues.
• Proximal femoral replacement long stem components provide a viable solution for extensive bone loss due to tumors.

Conclusions:

• Long stem femoral components are crucial for addressing diverse challenges in hip reconstruction.
• The calcar replacement and proximal femoral replacement variants offer targeted solutions for specific clinical scenarios.
• Understanding the indications, limitations, and potential pitfalls of these implants is vital for successful outcomes.