Castel-Oñate A, Marín-Peña O, Cuellar-Gutierrez R, et al. - A prospective multicenter study was designed to assess intra-abdominal pressure changes during hip arthroscopy and define its association with other patient-related variables. They assessed the intra-abdominal pressure (IAP) indirectly by a bladder catheter (AbViser Autovalve Intra-abdominal pressure monitor) and documented every 30 minutes during the entire procedure. They examined the following risk factors: traction time, duration surgery, previous abdominal surgery, capsule repair, psoas tenotomy, and surgical approach. They enrolled a total of 105 individuals with symptomatic femoroacetabular impingement that underwent hip arthroscopy. The IAP did not increase significantly after first 60 minutes of surgery. They found that IAP increases significantly during the first 60 minutes of hip arthroscopy; it then stabilizes for the duration of surgery before decreasing just after the completion of surgery. No relationship was found between highest recorded IAP and additional complications. No symptomatic intra-abdominal hypertension was documented. In IAP, individual- and procedure-specific risk factors did not predict changes.