Validation of a second-generation appropriateness classification system for total knee arthroplasty: a prospective cohort study.

Background: To test the validity of a second-generation appropriateness system in a cohort of patients undergoing total knee arthroplasty (TKA).

Methods: We applied the RAND/UCLA Appropriateness Method to derive our second-generation system and conducted a prospective study of patients diagnosed with knee osteoarthritis in eight public hospitals in Spain. Main outcome questionnaires were the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), Short-Form-12 (SF-12), and the Knee Society Score satisfaction scale (KSS), completed before and 6 months after TKA.

[Process indicators: tools for monitoring the management of severe trauma cases in Catalonia].

Objectives: Process indicators have been widely used to monitor the way trauma care is provided. We aimed to analyze whether data from a hospital's severe trauma register could facilitate the evaluation of aspects of the initial management of severe injuries.

Material And Methods: Observational, retrospective population-based study.

International comparative evaluation of knee replacement with fixed or mobile-bearing posterior-stabilized prostheses.

Background: Posterior-stabilized total knee prostheses were introduced to address instability secondary to loss of posterior cruciate ligament function, and they have either fixed or mobile bearings. Mobile bearings were developed to improve the function and longevity of total knee prostheses. In this study, the International Consortium of Orthopaedic Registries used a distributed health data network to study a large cohort of posterior-stabilized prostheses to determine if the outcome of a posterior-stabilized total knee prosthesis differs depending on whether it has a fixed or mobile-bearing design.