Anxiety and Insomnia in Young and Middle-Aged Adult Hip Pain Patients With and Without Femoroacetabular Impingement and Developmental Hip Dysplasia

Background: In young and middle-aged adults with and without hip deformity, hip pain receives treatment focused primarily related to hip structure. Because this hip pain may be chronic, these patients develop other coexisting, modifiable disorders related to pain that may go undiagnosed in this young and active population, including insomnia and anxiety. Objective: The objective of this study was to compare assessments of insomnia and anxiety in young and middle-aged adults presenting with hip pain with no greater than minimal osteoarthritis (OA) compared to asymptomatic healthy controls. Comparisons between types of hip deformity and no hip deformity in hip pain patients were performed to assess whether patients with specific hip deformities were likely to have insomnia or anxiety as a cofounding disorder to their hip pain. Design: Prospective case series with control comparison. Setting: Two tertiary university physiatry outpatient clinics. Participants: A total of 50 hip pain patients aged 18-40 years and 50 gender- and age-matched healthy controls. Methods: Patients were enrolled if 2 provocative hip tests were found on physical examination and hip radiographs had no or minimal OA. Radiographic hip deformity measurements were completed by an independent examiner. Comparisons of insomnia and anxiety were completed between 50 hip pain patients and 50 controls and between patients with different types of hip deformity. Main Outcome Measures: Insomnia Severity Index (ISI) and Pain Anxiety Symptoms Scale (PASS). Results: A total of 50 hip pain patients (11 male and 39 female) with mean age of 31.2 ± 8.31 years enrolled. Hip pain patients slept significantly less (P =.001) per night than controls. Patients experienced significantly greater insomnia (P =.0001) and anxiety (P =.0001) compared to controls. No differences were found in insomnia and anxiety scores between hip pain patients with and without hip deformity or between different types of hip deformity. Conclusion: Hip pain patients with radiographs demonstrating minimal to no hip arthritis with and without hip deformity experience significant cofounding yet modifiable disorders of sleep and anxiety. If recognized early in presentation, treatment of insomnia and anxiety ultimately will improve outcomes for hip patients treated either conservatively or surgically for their hip disorder.