Resultados clínicos y funcionales de los sistemas de metal trabecular en la cirugía de revisión acetabular con defectos severos. Resultados a 5 años

Introduction

Total hip arthroplasty revision surgery it's a big challenge due to the increase of severe acetabular bone defects and the poor quality of the remaining bone.

Objective

Assess clinical and radiological outcomes, complications and survival of the trabecular metal system implants in the treatment of severe acetabular bone defects (AAOS II, III y IV) with a mean follow up of 56 months.

Material y method

We retrospectively reviewed the data of 58 patients who underwent acetabular revision surgery with a trabecular metal system implant between January of 2008 and December of 2014. Demographics, clinical outcomes through Harris Hip Score, satisfaction, radiographic characteristic, percentage and type of complication and survival after 56 months of follow up were registered.

Results

All patients improved their score on the Harris Hip Score scale after surgery (P = 0.0001). Thirteen patients showed intraoperative complications (8 periprosthetic fractures and 5 nerve injuries), another 13 patients showed postoperative complications (6 dislocations y 7 wound infections). A second revision surgery was needed in 5 patients. The 7,5 years survivorship was 91,2%.

Conclusion

Trabecular metal system implants have shown good functional and survival outcomes after 56 months follow up, probably higher than other acetabular reconstruction systems.