Editorial Commentary: Obesity Is Associated With Lower Hip Function Pre- and Postoperatively and Increased Time to Patient Acceptable Symptom State After Hip Arthroscopy.

In 2015, worldwide, there were more than 1.9 billion adults classified as having overweight (body mass index [BMI] >25), with 600 million of these individuals meeting the definition of obesity (BMI >30). Hip arthroscopy in patients with obesity can lead to improve outcomes, albeit with lower absolute levels of patient-reported outcome scores and with increased risk of complications and conversion rates to total hip arthroplasty when compared with their counterparts without obesity. Importantly, a significantly longer time to patient acceptable symptoms state achievement is seen for patients with class I obese than patients with normal BMI. Unfortunately, the hip is quite susceptible to the effects of obesity, with greater acetabular depth/deformity, reduced femoral head cartilage, greater forces experienced with ambulation, and a predisposition to femoroacetabular impingement syndrome. Thus, almost 42% of patients operated on in North America for femoroacetabular impingement syndrome are classified as having overweight or obesity. This does not need to deter from the consideration of arthroscopic hip surgery in the population with obesity; rather, it supports a discussion between surgeon and patient on expectations and timeline for improvement.