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Developing a New Calculator To Assess The Risk For Conversion To Hip Arthroplasty In Subjects Undergoing Arthroscopy For Femoroacetabular Impingement: The Har-Index


Roberto Seijas-Vazquez, MD, PhD, Prof.
SPAIN

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Developing a New Calculator To Assess The Risk For Conversion To Hip Arthroplasty In Subjects Undergoing Arthroscopy For Femoroacetabular Impingement: The Har-Index

Roberto Seijas-Vazquez, MD, PhD, Prof., SPAIN Ramon Cugat Bertomeu, MD, PhD, SPAIN David Barastegui, MD, PhD, MSc, SPAIN Patricia Laiz Boada, BSc, SPAIN Alfred Ferré-Aniorte, PT, SPAIN Xavier Cuscó, MD, SPAIN Eduard Alentorn-Geli, MD, PhD, MSc, FEBOT, FACGME, SPAIN Luis Garcia Bordes, SPAIN

Instituto Cugat, Barcelona, Barcelona, SPAIN

2023 Congress   ePoster Presentation   2023 Congress   Not yet rated

 

Anatomic Location

Hip / Groin / Thigh

Anatomic Structure

Cartilage

Diagnosis / Condition

Impingement Osteoarthritis

Treatment / Technique

Arthroscopy Total Joint Replacement

Diagnosis Method

Physical Examination MRI

Sports Medicine

Practice Management

Summary: An easy tool is presented that will help practitioners to make more informed decisions regarding the performance or not of hip arthroscopy in patients with a high risk for conversion to THA

Hip arthroscopy in femoroacetabular impingement (FAI) cases is a growing technique that can carry some unsatisfactory results. The most important one is the early need for a total hip arthroplasty (THA). The objective of this study is to describe a new useful tool to assess the preoperative risk for THA conversion after hip arthroscopy in patients with FAI.
This study is a retrospective analysis of a prospective cohort. Preoperative variables of 584 FAI-patients from a single center who underwent hip arthroscopy with a minimum 2-years follow-up were analyzed. The risk of each variable for THA was calculated and, by selecting the variables with an area under the ROC curve greater than 0.7, a calculator was constructed providing a risk index for each patient.
Four variables (age, Body Mass Index, Tönnis and ALAD) were related to an increased risk of conversion. The optimal cut-off points for each one was calculated, and a risk index was generated. The Hip-Arthroplasty-Risk Index (HAR-Index), is a 0-4 points scale obtained from four binary scores (0-1) depending on whether the cut-off point of each variable is reached or not. The increased risk of THA for each of the HAR-Index values was 1,1%, 6,2%, 17,9%, 55,1% and 79,3% respectively. The HAR-Index showed an area under the ROC curve of 0.89, a predictive index categorized as very good.
This easy tool will help practitioners to make more informed decisions regarding the performance or not of hip arthroscopy in patients with a high risk for conversion to THA.

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