Publications by authors named "Nils Nivbrant"
Introduction: Micromotion analysis predicts component fixation survival in Total Knee Arthroplasty (TKA) but a paucity of literature exists for medial pivot designs. This clinical study examined the tibial component micromotion in a second-generation medial pivot TKA.
Methods: This prospective single-center clinical cohort trial involved 35 patients with a mean patient age of 71 years.
Background: Total hip arthroplasty (THA) is common though the investigation of new prostheses requires a practical, step-wise introduction. This study reports the 2-year clinical results and periprosthetic bone mineral density (BMD) changes, along with a subset undergoing Radiostereometric analysis (RSA), in patients undergoing primary cemented THA using a new highly polished, double tapered, collarless femoral stem (Absolut).
Methods: Between August 2013 and December 2016, 47 patients with a mean age of 74.
Background: Evidence supports the use of cementless tibial component fixation in total knee replacement but there is a paucity of literature on posterior stabilized designs. This randomized study of posterior stabilized total knee replacements compared cemented and cementless tibial fixation with regard to component migration, bone remodeling, and clinical outcomes.
Methods: This prospective single-center, blinded, randomized clinical trial included 100 patients with a mean age of 68 years (range, 45 to 87 years).
Background: Many exchangeable neck hip systems have been withdrawn because of fretting corrosion at the neck/stem coupling.
Method: Our prospective randomized study evaluating stem stability (Roentgen stereophotogrammetric analysis, dual-energy x-ray absorptiometry) and clinical outcomes between the K2/Apex hip systems was ceased early because of a withdrawal of the stems which had an unfavorably high early revision rate reported in the Australian Orthopaedic Association National Joint Registry (9.3% at 3 years).