Chen DQ, et al. - Investigators examined approximately 2000 candidates identified in a national insurance database to evaluate the role of normal pressure hydrocephalus (NPH) as a risk factor for postoperative complications following primary total knee (TKA) and total hip arthroplasty (THA). An association of NPH was noticed with an increased risk of hospital readmission, ER visit, and infection following TKA. They also found a correlation between NPH and increased risk of hospital readmission, ER visit, and dislocation following THA. Significantly higher costs and hospital length of stay following both procedures were reported in relation to NPH. They overall concluded the relation of diagnosis of NPH with an elevated risk of postoperative complications and enhanced resource utilization after TKA and THA.