High failure rate of a new pressfit cup in mid-term follow-up.

Background: Unacceptably high rates of loosening of a novel cementless cup system (Mathys, SeleXys TH+) have been reported. In this study, our mid-term-results with the SeleXys TH+ cup are compared with an established pressfit cup (Ceraver, Cerafit-R).

Methods: Between 2008 and 2011, a total of 407 implantations, 19 of them bilaterally, were conducted on 388 patients with the implants in question.

Prone position in balloon kyphoplasty leads to no secondary vertebral compression fractures in osteoporotic spine - a MRI study.

Purpose: Vertebral compression fractures are the most common fractures in the elderly. Long lasting pain and deformity is responsible for consecutive impairment with markedly reduced life quality, increased morbidity and mortality. The beneficial effects of balloon kyphoplasty are verified in many studies.