The Horsens-Aarhus Femoro Acetabular Impingement (HAFAI) cohort: outcome of arthroscopic treatment for femoroacetabular impingement. Protocol for a prospective cohort study

Abstract

IntroductionDuring the past decade, it has become increasingly more common to offer hip arthroscopic surgery when treating people with femoroacetabular impingement (FAI). Nevertheless, the latest reviews conclude that it still remains to be properly investigated how surgery affects the patients. Specifically, detailed information on the functional, muscular and mechanical impact of surgery in larger groups is lacking. Furthermore, the long-term outcome of the surgery is still to be investigated.Methods and analysisIn this prospective cohort study, a total of 60 patients with FAI scheduled for arthroscopic surgery will be followed and tested preoperatively, and again after 3, 6, 9 and 12 months. Assessment includes isokinetic dynamometry evaluating hip flexion and extension; evaluation of functional capacity in a three-dimensional motion laboratory; pain assessment; self-reported function, quality of life, expectation and satisfaction with the surgery; recording of previous and present sporting activities and accelerometry. In addition, data on surgical procedure, rehabilitation progress, adverse events and failure will be recorded. Patients will be compared with an age-matched and gender-matched reference group of 30 persons with no hip, knee, ankle or back problems. Long-term follow-up of this cohort may evaluate possible reoperations and development of hip osteoarthritis. Furthermore, analysis on how subgroups respond to the treatment could be performed together with identification of possible “non-responders”.Ethics and disseminationThe study is approved by the Central Denmark Region Committee on Biomedical Research Ethics (Journal No 1-10-72-239-14). The results from this study will be presented at national and international congresses and published in peer-reviewed journals.Trial registration numberNCT02306525.

High relative reliability and responsiveness of the forgotten joint score-12 in patients with femoroacetabular impingement undergoing hip arthroscopic treatment. A prospective survey-based study

“…Patients were recruited consecutively from December 2014 to February 2017 from the HAFAI-cohort (patients in Horsens and Aarhus with Femoral Acetabular Impingement) consisting of patients scheduled for hip arthroscopic treatment for FAIS at Horsens Regional Hospital, Denmark [19]. This cohort is followed prospectively to evaluate the outcome of arthroscopic treatment for FAIS.…”

“…Following surgery, the patients followed a standardized, homebased rehabilitation programme instructed by experienced physiotherapists [19].…”

Patient-reported outcomes, hip muscle strength and physical activity in patients with femoroacetabular impingement syndrome before and after surgery (PhD Academy Award)

“…My PhD included studies on patients with femoroacetabular impingement syndrome (FAIS). We performed (1) a systematic review with meta-analysis1 investigating patient-reported outcomes before and after hip arthroscopic surgery in patients with FAIS; and (2) a cohort study in which I investigated patient-reported outcomes, hip muscle strength and physical activity level in 60 patients with FAIS before and after hip arthroscopic surgery 2–5…”

“…The cohort study was conducted at Horsens Regional Hospital and Aarhus University in Denmark, where I tested all patients in an isokinetic dynamometer (figure 1)3 4 and attached accelerometers to their thigh in order to monitor daily activity level for 5 days 5. Patient-reported outcomes were collected using the Copenhagen Hip and Groin Outcome Score (HAGOS) 2. Furthermore, age-matched and gender-matched persons reporting no hip problems were included for comparison.…”

“…Furthermore, age-matched and gender-matched persons reporting no hip problems were included for comparison. 2…”