[Legal claims to obtain hip replacement surgery in the State of Rio de Janeiro, Brazil, 2016-2018]

This study analyzed the court proceedings, health characteristics of the patients, and plaintiffs' characteristics in lawsuits for hip replacement surgery from public health services in the state of Rio de Janeiro, Brazil. The data employed was from the Technical Support Center for the Judiciary of the Rio de Janeiro Court of Justice (NAT-JUS) database, from January 2016 to December 2018. Data were analyzed according to tiers in the court system. There were 89 lawsuits filed for hip replacement surgery and most of them were tried in the Court of Justice of the State of Rio de Janeiro (TJRJ), with joint plaintiffs, represented by the Public Defender's Office. They had advance relief granted, and were ruled in favor of the plaintiffs, with no appeals filed. More than half of the cases were referred to NAT-JUS. The osteoarthritis group waited approximately seven months, while the emergency conditions group waited nearly two months from the date of filing to obtain the procedure. The lawsuits for hip replacement surgery showed similarities and differences in relation to other claims, object of others studies, which means that the strategies for their qualification. The study found that access to hip replacement surgery related to lawsuits in the Brazilian Unified National Health System (SUS) in the State of Rio de Janeiro is jeopardized, with the claims considered as an indicator of unmet needs.