Shoulder impingement syndrome: a systematic review of clinical trial participant selection criteria.

Background: Shoulder impingement syndrome (SIS) is a common diagnosis for patients with pain and dysfunction of the shoulder. Variations in the signs and symptoms might lead to uncertainty regarding the definition of SIS. The aim of this review is to explore the participant selection criteria used in the literature when investigating SIS and to assess differences in criteria among treating professions.

Inter-observer and intra-observer reliability of mechanical axis alignment before and after total knee arthroplasty using long leg radiographs.

Background: Long leg radiographs (LLRs) are commonly performed for assessment of mechanical alignment and operative planning in patients undergoing total knee arthroplasty (TKA). The aim of this study was to determine the inter- and intra-observer reliability of alignment measured by observers of different levels of experience.

Methods: Forty patients on the waiting list for a TKA had pre- and post-operative standardised LLRs.