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Cam Type FAI is a Cause of Hip Pain in the Young Adult and a Precursor to OA

Osteoarthritis | Femoroacetabular Impingement | Hip Dysplasia

An abnormally formed hip joint (cam deformity) is a major cause of osteoarthritis (OA). Individuals may not experience any symptoms until OA is severe due to extensive cartilage loss and changes in underlying bone. A series of studies showed that the cam deformity can lead to the development of OA if left untreated, thus strongly suggesting a causal relationship. Currently, the cam deformity that causes pain is surgically removed to relieve the pain and treat the associated cartilage damage. Recent studies have demonstrated that surgical treatment leads to bone and cartilage changes that were related to improved function and reduced pain.

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Participation Requirements

  • Sex:

    ALL

  • Eligible Ages:

    18 and up

Participation Criteria

Inclusion Criteria:

* Skeletally mature patient undergoing cam resection by hip arthroscopy with hip pain longer than 6 months
* Absence of arthritis (Tonnis Grade 0 or 1)
* Absence of dysplasia (LCEA \> 25°) or overcoverage (LCEA \> 39°)
* Alpha angle greater than 55° on multiplanar imaging
* Subject is over the age of 18 years old at time of enrollment
* Subject is willing and able to complete required study visits and assessments
* Subject is willing to sign the approved Informed Consent Form

Group 2 Inclusion Criteria:

* Normal femoral head neck contour and no evidence of dysplasia
* Subject is over the age of 18 years old at time of enrollment
* Subject is willing and able to complete required study visits and assessments
* Subject is willing to sign the approved Informed Consent Form

Exclusion Criteria:

* Prior joint replacement surgery in any lower-limb joint due to OA
* History of lower-limb joint or back injury in the last year that impairs mobility
* Metallic prosthesis
* Worked with metal, metal fragments in the eye
* Blood transmittable disease(s)
* In vivo devices (Aneurysm clip(s), Pacemaker, ICD, Implanted hearing device)
* Extreme claustrophobia
* Overweight or obese (BMI \> 30) and/or waist circumference \>102cm in men and \>88cm in women
* Diagnosis of Parkinson's or uncontrollable tremors
* Known history of early OA in the immediate family
* Pregnant, Breastfeeding, or planning to get pregnant
* Cognitive impairment that prevents accurate completion of patient-reported outcome questionnaires
* Patient unable/unwilling to complete all required follow-up visits
* Participants who have been exposed to other sources of radiation within the last year (Bringing radiation exposure above annual maximum)

Study Location

The Ottawa Hospital
The Ottawa Hospital
Ottawa, Ontario
Canada

Contact Study Team

Study Sponsored By
Ottawa Hospital Research Institute
Participants Required
More Information
Study ID: NCT04080466