Identification of Predictors for Clinical Outcomes in Femoroacetabular Impingement Surgery


About this study

The purpose of this study is to improve the surgical treatment outcomes of femoroacetabular impingement (FAI), which is affecting an increasing number of military personnel and young active individuals in the general population. The proposed study will investigate critical patient, disease, and surgical treatment predictors of femoroacetabular impingement (FAI) surgery outcomes.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria:

  • Age 14 - 40 years.
  • Skeletally Mature.
  • Failure of 6 weeks of conservative treatment.
  • Primary surgery (Hip Arthroscopic Treatment) a. Surgical treatment of FAI with hip arthroscopy.
  • Tonnis 0 -1 OA, with greater than 2 mm of joint space.
  • Clinical diagnosis of femoroacetabular impingement (FAI) (cam or combined; alpha > 50 degrees).

Exclusion Criteria:

  • Not a surgical candidate.
  • Skeletally Immature.
  • Acetabular Dysplasia (LCEA < 20).
  • Tonnis 2+ OA.
  • Previous ipsilateral hip surgery.
  • Previous major hip trauma (hip fractures, hip dislocations).
  • Additional disease processes (e.g., Avascular Necrosis (AVN), synovial disease, Ehlers-Danlos Syndrome (EDS), neuromuscular disorders).
  • Unable to consent due to mental faculty.
  • Pregnant women.
  • Non-English speaking patients.
  • Prisoners or other vulnerable populations.

Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status Contact

Rochester, Minn.

Mayo Clinic principal investigator

Rafael Sierra, M.D.

Open for enrollment

Contact information:

Riley Voll

(507) 284-5445

More information


Publications are currently not available

Study Results Summary

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Supplemental Study Information

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