During Total hip replacement arthroplasty (THA), the hip joint first must be luxated in order
to have access to the joints. A lot of force and torque must be carried out on the joint to
perform this manipulation. This is both difficult for the surgeon and may cause additional
tissue damage and postoperative pain. After placement of the prosthesis and reduction of the
joint, the tension of the hip joint must be evaluated by the surgeon to ascertain the
adequacy of the prosthesis. During luxation, minimal muscle tension would be ideal, while
after reduction of the joint, normal muscle tension is desired to permit assessment of the
mechanics of the hip joint.
The aim of the study is to investigate whether deep neuromuscular block, combined with a
reversal before mechanics assessment improves surgical conditions, surgical time, and
postoperative patient comfort.