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Femoroacetabular Impingement (FAI)

Mismatch between the acetabulum and femoral head in the hip joint.

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Ortopedi ve Travmatoloji department. Book Appointment →

What is Femoroacetabular Impingement (FAI)?

Femoroacetabular impingement (FAI) is an important cause of hip pain and early osteoarthritis in young adults. It has three subtypes: cam type (femoral side), pincer type (acetabular side), and mixed type.

Cam type involves an aspherical femoral head-neck junction; pincer type involves over-coverage of the acetabulum (coxa profunda, retroversion). Repetitive mechanical contact damages the labrum and cartilage.

Diagnosis uses alpha angle (>55°) and CE angle. MR arthrography is the gold standard for evaluating the labrum and cartilage. Untreated, FAI progresses to hip osteoarthritis.

Symptoms

Deep pain in the groin
Pain that worsens with sitting
Pain in hip flexion and internal rotation
Stiffness after prolonged sitting
C-sign (patient grips the greater trochanter)
Activity restriction
Catching sensation in the hip

Risk Factors

Young, active adulthood
Sports such as soccer, ice hockey, ballet
Cam or pincer anatomical variants
High-impact activities during adolescence
Family history
Prior SCFE
Prior Legg-Calvé-Perthes disease

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Onset of groin pain at a young age
  • Restriction in sports activities
  • Pain worsened by sitting
  • Catching with hip movements
  • When conservative treatment fails

Treatment Methods

01
Activity modification and rest
02
Hip strengthening exercises
03
Core stabilization
04
NSAID therapy
05
Intra-articular injection
06
Arthroscopic cam resection or rim trim

Which Department to Visit?

You can visit our Ortopedi ve Travmatoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

Learn About Ortopedi ve Travmatoloji Department

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.