Beyond Type III Paprosky Acetabular Defects: Are Partial Pelvic Replacements with Iliosacral Fixation Successful?

Overview

Journal Int Orthop

Specialty Orthopedics

Date 2023 May 5

PMID 37145143

Authors

Yannik Hanusrichter

Carsten Gebert

Sven Frieler

Marcel Dudda

Jendrik Hardes

Arne Streitbuerger

Lee Jeys

Martin Wessling

Affiliations

Soon will be listed here.

Abstract

Purpose: Supra-acetabular bone loss close beyond the sciatic notch is one of the most challenging defect types for stable anatomical reconstruction in revision arthroplasty. Using reconstruction strategies from tumour orthopaedic surgery, we adapted tricortical trans-iliosacral fixation options for custom-made implants in revision arthroplasty. The aim of the present study was to present the clinical and radiological results of this extraordinary pelvic defect reconstruction.

Methods: Between 2016 and 2021, 10 patients with a custom-made pelvic construct using tricortical iliosacral fixation (see Fig. 1) were included in the study. Follow-up was 34 (SD 10; range 15-49) months. Postoperatively CT scans evaluating the implant position were performed. Functional outcome and the clinical results were recorded.

Results: Implantation was possible as planned in all cases in 236 (SD 64: range 170-378) min. Correct centre of rotation (COR) reconstruction was possible in nine cases. One sacrum screw crossed a neuroforamen in one case without clinical symptoms. During the follow-up period, four further operations were required in two patients. There were no individual implant revisions or aseptic loosening recorded. The Harris Hip Score increased significantly from 27 Pts. to 67 Pts. with a mean improvement of 37 (p < 0.005). EQ-5D developed from 0.562 to 0.725 (p = 0.038) as a clear improvement in quality of life.

Conclusion: Custom-made partial pelvis replacement with iliosacral fixation offers a safe solution in "beyond Paprosky type III defects" for hip revision arthroplasty. Due to meticulous planning, precise implantation with good clinical outcome can be achieved. Furthermore, the functional outcome and patient satisfaction increased significantly showing promising early results with a relatively low complication rate.

Citing Articles

Monoflange custom-made partial pelvis replacements offer a viable solution in extensive Paprosky III defects.

Hanusrichter Y, Gebert C, Steinbeck M, Dudda M, Hardes J, Frieler S Bone Jt Open. 2024; 5(8):688-696.

PMID: 39168473 PMC: 11338660. DOI: 10.1302/2633-1462.58.BJO-2024-0029.R1.

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