CHAPTER 48 Use of a Modular Acetabular Reconstruction System
INDICATIONS AND CONTRAINDICATIONS
Paprosky Classification
PREOPERATIVE PLANNING AND TECHNIQUE
Acetabular Augments
Advantages
Avoid structural allograft and the potential for graft resorption with resulting loss of mechanical support
Disadvantages
Potential exists for disassembly if loss of fixation occurs, with possible generation of particulate debris
Surgical Technique Recommendations
Surgical technique recommendations are as follows:
1. Defect extent, location and mechanical support for the cup on host bone after initial preparation determines if and where augments are used.
2. Try to reconstruct the hemispherical acetabular cavity first using augment (type II or III configuration as detailed later), then place the socket in optimal orientation within the reconstructed acetabulum.