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This study evaluates the clinical and radiological outcomes of the "footing technique" in 37 revision total hip arthroplasties (rTHA) with Paprosky 3B acetabular defects, with or without pelvic discontinuity. At a mean follow-up of 3.1 years, the cup and augment construct survival rate was 94.6% with aseptic loosening as the endpoint, and improvements in functional outcomes and restoration of hip rotation center and limb length were observed. The use of a half cage in addition to the footing technique may provide supplemental fixation.
The "footing technique" in rTHA demonstrates promising short-term survival and functional outcomes for Paprosky 3B acetabular defects, suggesting a viable option for managing significant acetabular bone loss.
Introduction: The question of choosing a treatment strategy for acetabular bone loss remains relevant. The aim of this study was to evaluate the clinical and radiological results of the footing technique in patients who underwent revision total hip arthroplasty (rTHA). Materials and methods: The study included 36 patients (37 hips). The mean follow-up was 3.1 years. Acetabular defects as per the Paprosky classification type 3B were in 34 hips, type 3B and pelvic discontinuity were in 3 hips. Half cage was used in addition to footing technique in 9 hips. Results: Aseptic loosening was observed in 2 hips, and dislocations were observed in the other 2 hips. At a mean follow-up of 3.1 years, cup and augment construct survival was 94.6% with aseptic loosening as the endpoint. Improvement in postoperative functional results was established. Good ability to restore the hip rotation centre and to restore limb length according to radiographs were noted. Conclusions: The footing technique shows good clinical and radiographic results in patients who have 3B acetabular defects. The use of a half cage in addition to the footing technique may be a good option for supplemental fixation. Further follow-up is required to evaluate long-term results.
