Modular Stems: Advantages and Current Role in Primary Total Hip Arthroplasty

Area of Science:

• Orthopedic surgery
• Biomedical engineering

Background:

• Modular femoral stems in total hip arthroplasty provide intraoperative flexibility and precise joint adjustments.
• The development of modularity has led to diverse implant designs, with modular proximal sleeves showing significant advancements.

Purpose of the Study:

• To evaluate the efficacy and application of modular femoral stems in total hip arthroplasty.
• To highlight the advantages of modular implants in complex orthopedic cases.

Main Methods:

• Review of published literature on modular femoral stems and their outcomes.
• Analysis of implant designs, focusing on modular proximal sleeves.
• Case study considerations for complex hip deformities.

Main Results:

• Modular femoral implants, particularly those with proximal sleeves, demonstrate excellent mid- to long-term clinical results.
• These implants offer significant advantages in managing complex cases involving hip developmental issues, post-infection deformities, or skeletal dysplasia.

Conclusions:

• Modular femoral stems are a valuable option for total hip arthroplasty, especially in cases with severe proximal femur deformation.
• While tapered stems are popular for primary surgeries, modularity provides crucial adaptability for challenging anatomical situations.