DOS 2017

DOS Kongressen 2017 ·

213

Early results of the Arcos Modular Femoral Revision

System by single center retrospective data collec-

tion

Karen Dyreborg, Michael Mørk Petersen, Anne Grete Kjersgaard, Søren Solgaard

Orthopaedic surgery, Rigshospitalet; Orthopaedic surgery, Rigshospitalet; Or-

thopaedic surgery, Gentofte Hospital; Orthopaedic surgery, Gentofte Hospital

Background:

The ArcosTM Modular Femoral Revision System is a comprehen-

sive, press-fit revision stem design including various possibilities for modular

proximal and distal reconstruction in femoral revision THA surgery.

Purpose / Aim of Study:

To evaluate the early results after femoral revision in

a consecutive series of patients operated in the period August 2011 to Decem-

ber 2014 at Gentofte Hospital.

Materials and Methods:

118 patients (mean age=67(39-95) years, F/

M=61/57) were included in the study with a clinical observation time of 2.5 to

5 years. The material included all femoral revisions (index operation cemented

or uncemented THA, causes of revision septic and aseptic loosening). Clinical

examination including present function of the hip assessed by HHS, OHS, EQ5D

and radiographic evaluation was performed. The primary endpoint was the rate

of re- revisions using data from the Danish Hip Arthroplasty Registry, the Pa-

tient Administrative System and the National Patient Registry. Secondary end-

points were the rate of complications (dislocations, periprosthetic fractures,

infection (re-infection) and the present function of the hip. Statistics: Kaplan

Meier survival analysis

Findings / Results:

Of the 118 patients, 15 patients died in the interim and

were consequently only included in the implant survivorship analysis. 68 pa-

tients attended the follow-up control. 11 (9%) hips were re-revised due to in-

fection (n=5), aseptic loosening (n=2), fracture (n=2) or other causes (n=2).

The 1, 3, and 5 year probability of implant survival (95% confidence interval)

was 99% (87%-97%), 91% (86%-96%) and 88% (81%-96%) respectively.

Conclusions:

The early results of the Arcos Femoral Revision System are prom-

ising. The early survival of the implant is acceptable, and the clinical results are

satisfying in spite of an often preoperatively severely damaged femoral bone.

No conflicts of interest reported

165.