Generic Portal

TY - JOUR

T1 - Dynamic trial fitting of the cup in press-fit total hip arthroplasty, a feasibility study

AU - Hoornenborg, Daniël

AU - van Loon, Justin

AU - de Waard, Sheryl

AU - Sierevelt, Inger N.

AU - Opdam, Kim T. M.

AU - Kerkhoffs, Gino M. M. J.

AU - Haverkamp, Daniël

N1 - Funding Information: This study was financially supported by Medi-chanical Engineering ApS. They were not involved in the determination of the study design ; in the collection, analysis and interpretation of the data ; in writing of the report or in the decision to submit the article for publication. Publisher Copyright: © 2021, Acta Orthopædica Belgica.

PY - 2021/6/1

Y1 - 2021/6/1

N2 - Trial fitting of the cup during total hip arthroplasty (THA) is done by trial cups, which do not resemble the real press-fit obtained by the definitive implant. Our goal is to judge feasibility of the X-pander® in clinical practice; a device developed to mimic the real press-fit obtained by the definitive cup, to ensure satisfactory press-fit. In this feasibility study 45 experienced orthopaedic surgeons from 7 European countries filled in a structured survey after 78 primary THA and 31 revision surgeries, using the X-pander instead of traditional trial cups. Primary outcomes were decision change concerning cup size or further reaming and increased confidence regarding cup insertion and size. Additionally, potential association between the primary outcomes and procedure (primary or revision), bone quality and experience of the surgeon were evaluated. In 33.3% of the primary and 32.2% of the revision cases the X-pander measurement changed the decision and further reaming or change of cup size was decided. In 61.5% and 58.1% of respectively the primary and revision THAs the X-pander was judged to give fairly to much more reliable information than traditional trial cups. The X-pander could lead to less additional screw fixation, as stated in 37.2% of the primary and 25.8% of the revision cases and to better cup insertion in respectively 50.0% and 51.6%. This study validates that the X-pander may be a suitable option for accurate sizing and assessment of the reamed acetabulum and could replace traditional trial cups in THA.

AB - Trial fitting of the cup during total hip arthroplasty (THA) is done by trial cups, which do not resemble the real press-fit obtained by the definitive implant. Our goal is to judge feasibility of the X-pander® in clinical practice; a device developed to mimic the real press-fit obtained by the definitive cup, to ensure satisfactory press-fit. In this feasibility study 45 experienced orthopaedic surgeons from 7 European countries filled in a structured survey after 78 primary THA and 31 revision surgeries, using the X-pander instead of traditional trial cups. Primary outcomes were decision change concerning cup size or further reaming and increased confidence regarding cup insertion and size. Additionally, potential association between the primary outcomes and procedure (primary or revision), bone quality and experience of the surgeon were evaluated. In 33.3% of the primary and 32.2% of the revision cases the X-pander measurement changed the decision and further reaming or change of cup size was decided. In 61.5% and 58.1% of respectively the primary and revision THAs the X-pander was judged to give fairly to much more reliable information than traditional trial cups. The X-pander could lead to less additional screw fixation, as stated in 37.2% of the primary and 25.8% of the revision cases and to better cup insertion in respectively 50.0% and 51.6%. This study validates that the X-pander may be a suitable option for accurate sizing and assessment of the reamed acetabulum and could replace traditional trial cups in THA.

KW - Acetabular component

KW - Press-fit

KW - Total hip arthroplasty

KW - Trial fitting

UR - http://www.scopus.com/inward/record.url?scp=85115976492&partnerID=8YFLogxK

U2 - 10.52628/87.2.18

DO - 10.52628/87.2.18

M3 - Article

C2 - 34529388

VL - 87

SP - 327

EP - 331

JO - Acta orthopaedica Belgica

JF - Acta orthopaedica Belgica

SN - 0001-6462

IS - 2

ER -