Clinical research is compared to basic research, often dependent on imprecise methods. The number of patients needed to demonstrate a difference between two treatment methods is therefore large. In musculoskeletal research common methods like plain radiographs are imprecise for detecting healing of bone, loss of bone (osteoporosis), body-composition and movement of implants or positions of joints. During the last decades more precise methods have been developed1. We have established a centre for radio-stereometric analysis (RSA) and dual energy x-ray absorptiometry (DXA). With RSA small movements of implants or joints can be measured with a precision of less than 0.1 mm for translation and 0.3° for angular movements. With DXA bone remodelling and body composition can be measured precisely within a few percent.
60% Reduction of reoperations and complications for elderly patients with hip fracture through the implementation of a six-item improvement programme
BMJ Open Qual, 11 (3)
A cost-effectiveness analysis of reverse total shoulder arthroplasty compared to locking plates in the management of displaced proximal humerus fractures in the elderly. The DelPhi trial
J Shoulder Elbow Surg (in press)
Risk factors for revision surgery due to dislocation within 1 year after 111,711 primary total hip arthroplasties from 2005 to 2019: a study from the Norwegian Arthroplasty Register
Acta Orthop, 93, 593-601