Maximizing function and outcomes in acetabular reconstruction: segmental bony defects and pelvic discontinuity

Area of Science:

• Orthopedic Surgery
• Biomaterials Science

Background:

• Acetabular bone loss presents significant challenges in revision total hip arthroplasty.
• Severe deficiency, including segmental defects and pelvic discontinuity, complicates achieving stable acetabular component fixation.

Purpose of the Study:

• To review current and emerging strategies for acetabular reconstruction in revision hip arthroplasty with severe bone loss.
• To evaluate the efficacy and indications for various reconstructive options.

Main Methods:

• Review of literature on acetabular reconstruction techniques for severe bone deficiency.
• Analysis of alternatives to traditional antiprotrusio cages and structural allografts.
• Discussion of porous-coated acetabular augments, plating, custom components, and reconstructive cages.

Main Results:

• Porous-coated acetabular augments are increasingly favored over structural allografts for segmental bone loss.
• Traditional antiprotrusio cages have limitations due to higher failure rates.
• A range of options including plating, allografts, custom implants, and cages are available for complex cases.

Conclusions:

• Severe acetabular bone loss requires tailored reconstructive strategies.
• Porous-coated augments represent a significant advancement for managing segmental defects.
• A combination of techniques may be necessary for optimal outcomes in pelvic discontinuity and extensive bone loss.