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Knee Surgery, Sports Traumatology, Arthroscopy

, Volume 27, Issue 10, pp 3110–3120 | Cite as

Danish Hip Arthroscopy Registry: predictors of outcome in patients with femoroacetabular impingement (FAI)

  • Bjarne Mygind-KlavsenEmail author
  • Bent Lund
  • Torsten Grønbech Nielsen
  • Niels Maagaard
  • Otto Kraemer
  • Per Hölmich
  • Søren Winge
  • Martin Lind
Hip

Abstract

Purpose

Predictors of outcome after femoroacetabular impingement (FAI) surgery are not well-documented. This study presents data from the Danish Hip Arthroscopy Registry (DHAR) for such analyses. The purpose of this study was to identify predictors of poor outcome after FAI surgery in a Danish FAI population. The primary hypothesis was that older patients, patients with severe cartilage damage and female patients might have inferior outcome results compared with younger patients, patients with minor cartilage damage and male patients.

Methods

Radiological and surgical data as well as patient-reported outcome measures (PROM) from FAI patients in DHAR between January 2012 and May 2015 were collected. PROMs consisting of Copenhagen Hip and Groin Outcome Score (HAGOS), quality of life (EQ-5D), Hip Sports Activity Scale (HSAS) and Numeric Rating Scale (NRS) pain scores were assessed. The patients were divided into three age groups (< 25, 25–39 and ≥ 40 years). Cartilage injuries were classified according to International Cartilage Repair Society (ICRS) (femoral side) and modified Becks (acetabular side) classifications. A non-parametric statistic method was used to analyze the differences between the preoperative and postoperative PROM values.

Results

Data from 2054 FAI procedures in DHAR was collected. 53% of the procedures were done in female patients. All HAGOS sub-scales, EQ-5D, HSAS and NRS pain (rest and walk) demonstrated significant improvements in all age groups at follow-up. Comparison between age groups demonstrated poorer outcomes in both older age groups when compared with the < 25 years age group at 1- and 2-year follow-ups. Higher degrees of femoral and acetabular cartilage injury did have a negative influence on outcome at follow-up. Comparison between genders demonstrated lower preoperative outcomes in females and lower outcome score (HSAS) 1 and 2 years after FAI surgery.

Conclusions

Age above 25 and major cartilage injury might negatively affect the outcome of surgery, however, gender could not be identified as a negative predictor of clinical outcome after FAI surgery, but might negatively affect sports participation in females.

Level of evidence

III, prospective cohort study.

Keywords

Hip arthroscopy Femoroacetabular impingement FAI Treatment Predictors Outcomes 

Notes

Author contributions

All authors made substantial contributions to conception and design, analysis and interpretation of data. TGN made substantial contributions to the acquisition of data, statistical analysis and interpretation of data. All authors have been involved in drafting the manuscript or revising it critically for important intellectual content. All authors have read and approved the final manuscript.

Funding

There was no funding.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no competing interests.

Ethical approval

Ethical approval was not sought for the present study. Handling of data from DHAR is approved by the Danish Data Protection Agency and DHAR is approved by the Danish Health Authority.

Informed consent

For this type of study formal consent is not required.

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Copyright information

© European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA) 2018

Authors and Affiliations

  1. 1.Department of Orthopedics, Division of Sports TraumatologyAarhus University HospitalAarhus CDenmark
  2. 2.Department of OrthopedicsHorsens Regional HospitalHorsensDenmark
  3. 3.Department of OrthopedicsOdense University HospitalOdenseDenmark
  4. 4.Department of Orthopedic Surgery, Sports Orthopedic Research Center-Copenhagen (SORC-C)Copenhagen University Hospital, Amager-HvidovreHvidovreDenmark
  5. 5.CFR Private HospitalHellerupDenmark

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