Radiographic findings in patients suspected of subacromial impingement syndrome: prevalence and reliability.

Objective: Aims were to (i) report prevalence and (ii) evaluate reliability of the radiographic findings in examinations of patients suspected of subacromial impingement syndrome (SIS), performed before a patient's first consultation at orthopaedic department.

Materials And Methods: This cross-sectional study examined radiographs from 850 patients, age 18 to 63 years, referred to orthopaedic clinic on suspicion of SIS. Prevalence (%) of radiographic findings were registered.

Superior bone fixation of conical compared with hemispherical trapezial cup design: an experimental radiostereometry study.

Purpose: The most used cup designs for trapeziometacarpal (TMC) arthroplasty are of hemispherical and conical geometrical shape. Using a validated pig bone model, we compared the bone fixation using radiostereometry (RSA).

Methods: Twenty saddle-shaped pig forefoot bones were prepared with insertion of bone markers and reaming.

No effect of hydroxyapatite-coated sliding hip screw threads on screw migration in the femoral head/neck of pertrochanteric fractures: a randomized controlled trial using radiostereometric analysis.

Introduction: Cut-out is the most frequently reported mechanical failure of internal fixation of pertrochanteric fractures. The purpose of this study was to examine if hydroxyapatite-coated screw thread on a sliding hip screw (SHS) could reduce screw migration within the femoral head in patients with stable pertrochanteric fractures.

Materials And Methods: In a double-blinded randomized controlled study, 37 patients at mean age 78 (range 56-96), with pertrochanteric fracture (Evans I, II, IV) received surgery with a SHS with a hydroxyapatite-coated or a non-coated lag screw thread.

Study protocol for discharge on day of surgery after hip and knee arthroplasty from the Center for Fast-track Hip and Knee Replacement.

Background And Purpose: Limited data exists on the implementation process and safety of discharge on the day of surgery after primary hip and knee arthroplasty in a multicenter setting. We report our study protocol on the investigation of the feasibility, safety, and socioeconomic aspects following discharge on day of surgery after hip and knee arthroplasty across 8 fast-track centers.

Patients And Methods: This is a study protocol for a prospective cohort study on discharge on day of surgery from the Center for Fast-track Hip and Knee Replacement.

Return to Work After Surgery For Trapeziometacarpal Joint Osteoarthritis in Relation to Occupational Hand Force Requirements.

Purpose: This study evaluated the hypothesis that higher occupational hand force requirements are related to slower return to work (RTW) after surgery for trapeziometacarpal joint osteoarthritis.

Methods: Patients treated surgically for trapeziometacarpal joint osteoarthritis from 2001 to 2017 were identified in the Danish National Patient Register. Sustainable RTW (sRTW) was defined as the first period of 4 consecutive weeks without health-related public transfer payments, according to the Danish National Register on Public Transfer Payments.

Cemented and cementless dual mobility cups show similar fixation, low polyethylene wear, and low serum cobalt-chromium in elderly patients: a randomized radiostereometry study with 6 years' follow-up.

Background And Purpose: Dual mobility (DM) articulation total hip arthroplasty (THA) is used increasingly to reduce dislocation risk. We investigated cup fixation, polyethylene (PE) wear, serum chromium and cobalt ions, and their correlation to physical activity in patients with DM cups at 6-year follow-up.

Patients And Methods: In a patient-blinded RCT, 60 patients with hip osteoarthritis at a median age of 74 years (70-82) were randomly allocated to cemented (n = 30) or cementless hydroxyapatite-coated (n = 30) fixation of Avantage DM THA with a highly-crosslinked vitamin-E PE liner.

Normal Values of Distal Radioulnar Joint Kinematics during a Dynamic Press Test.

 Measurement of in vivo distal radioulnar joint (DRUJ) pathomechanics during simple activities can represent the disability experienced by patients and may be useful in diagnostics of DRUJ instability. A first step is to describe the physiological normal limits for DRUJ kinematics in a reproducible and precise test setup, which was the aim of this study.  DRUJ kinematics were evaluated in 33 participants with dynamic radiostereometry (RSA) while performing a standardized press test examination.

The relationship between muscle power, functional performance, accelerometer-based measurement of physical activity and patient-reported outcomes in patients with hip osteoarthritis: A cross-sectional study.

Background: Patients with unilateral hip osteoarthritis appear to have between-leg differences in leg extension power (LEP). The Nottingham Leg Extensor Power Rig provides reliable and valid results but requires sensitive equipment. It would be relevant to identify measures closely associated with this test.

Active clinical issues at discharge predict readmission within 30 days and one year following hip fracture surgery.

Aim: To investigate the impact of delay in surgery for medical causes and active clinical issues (ACIs) on 30-day readmission for medical causes after hip fracture surgery.

Findings: ACIs were associated with readmissions following hip fracture surgery; however, no association between readmissions and reasons for delaying surgery was found.

Message: Further studies into ACIs and reasons for delaying surgery are warranted to make more tailor-made treatment plans for patients with hip fracture.

Osteoporosis does not affect bone mineral density change in the proximal humerus or the functional outcome after open reduction and internal fixation of unilateral displaced 3- or 4-part fractures at 12-month follow-up.

Background: The aim of this prospective study was to investigate bone mineral density (BMD) changes in the proximal humerus of the shoulder during a healing period of 12 months after displaced 3- or 4-part proximal humerus fractures treated with open reduction and internal fixation (ORIF) with an anatomic angular stable locking plate and the influence on fracture healing and functional outcomes.

Methods: In a prospective multicenter study, 36 patients (29F and 7M, age range: 38-83) with unilateral displaced 3- or 4-part proximal humerus fractures were included for ORIF. Dual-energy x-ray absorptiometry for osteoporosis status was employed.

Medial congruent polyethylene design show different tibiofemoral kinematics and enhanced congruency compared to a standard symmetrical cruciate retaining design for total knee arthroplasty-an in vivo randomized controlled study of gait using dynamic radiostereometry.

Purpose: New total knee arthroplasty implant designs attempt to normalize kinematics patterns that may improve functional performance and patient satisfaction. It was hypothesized that a more medial congruent (MC) anatomic bearing design (1) influences the tibiofemoral kinematics and (2) enhances articular congruency compared to a standard symmetrical cruciate retaining (CR) bearing design.

Methods: In this double-blinded randomized study, 66 patients with knee osteoarthritis were randomly included in two groups: MC (n = 31) and CR (n = 33).

The majority of community-dwelling hip fracture patients return to independent living with minor increase in care needs: a prospective cohort study.

Introduction: Hip fracture patients are fragile, and the majority fail to fully recover to their pre-fracture functional level, resulting in an increase in institutionalization. We aimed to investigate risk factors for being dependent at discharge and for failure to return to independent living 12 months after a hip fracture.

Materials And Methods: From 2011 to 2017, all surgically treated hip fracture patients admitted from their own homes were included in this prospective cohort study.

Effectiveness of a bandage to prevent re-dislocation after total hip arthroplasty in patients with a previous hip dislocation. A randomized controlled trial with 12-week follow-up.

Objective: To investigate if using a hip bandage is more effective than standard care in the prevention of total hip arthroplasty re-dislocation in patients with a previous total hip arthroplasty dislocation.

Design: randomized controlled trial.

Setting: Holstebro Regional Hospital and Viborg Regional Hospital.

Malnutrition, poor function and comorbidities predict mortality up to one year after hip fracture: a cohort study of 2800 patients.

Purpose: Despite extensive research, a complete understanding of factors influencing mortality risk after hip fractures is lacking. Previous research has focused on static risk factors; however, to improve outcomes, attention should be directed towards risk factors that may be optimised. The present study aimed to investigate the association of 19 risk factors with mortality among patients with hip fracture treated according to a well-defined guideline.

Measurement properties of the Danish version of the Boston Carpal Tunnel Questionnaire.

Background And Aims: Patient reported outcome measures are often used in medical research to evaluate symptoms and functional status in patients. The Boston Carpal Tunnel Questionnaire is specifically designed to evaluate functional status and symptom severity in patients with Carpal Tunnel Syndrome. The aim of this study was to validate and examine the measurement properties of the Functional Status Scale and Symptom Severity Scale from the Danish translated Boston Carpal Tunnel Questionnaire.

Influence of Occupational Hand Force Requirements on Return to Work, Pain, and Disability After Trapeziometacarpal Total Joint Arthroplasty: A 12-Month Follow-Up Study.

Purpose: We aimed to determine the prognosis after trapeziometacarpal total joint arthroplasty for basal thumb osteoarthritis with respect to sustainable return to work (RTW), pain, and disability. Our main hypothesis was that high occupational hand force requirements are related to slower RTW.

Methods: We conducted a 12-month follow-up study of patients who were treated with a trapeziometacarpal total joint arthroplasty in 2003 to 2015 and were active in the labor market at the time of surgery.

Distal radioulnar joint stabilization with open foveal reinsertion versus tendon graft reconstruction: an experimental study using radiostereometry.

Purpose: Symptomatic instability of the distal radioulnar joint (DRUJ) caused by lesion of the Triangular Fibrocartilage Complex (TFCC) can be treated with a number of surgical techniques. Clinical examination of DRUJ translation is subjective and limited by inter-observer variability. The aim of this study was to compare the stabilizing effect on DRUJ translation with two different surgical methods using the Piano-key test and a new precise low-dose, non-invasive radiostereometric imaging method (AutoRSA).

Interprofessional versus uniprofessional dyad learning for medical students in a clinical setting.

Objectives: The aim of the present study was to explore and compare medical students' perceived learning outcomes when treating patients under supervision in two different learning settings: a uniprofessional or an interprofessional dyad.

Methods: The design of the study is a qualitative interview study. Data were collected from October 2016 to June 2017 via semi-structured group interviews performed at the end of the clinical placement in an orthopaedic outpatient clinic for medical students in the last semester of the curriculum.

Surgery for trapeziometacarpal osteoarthritis in relation to cumulative occupational hand force requirements: a Danish nationwide cohort study.

Objectives: To evaluate if higher cumulative occupational hand force requirements are associated with higher risks of surgery for trapeziometacarpal osteoarthritis and with surgery earlier in life.

Methods: The study was based on Danish national registers. Among all persons born in Denmark 1931 to 1990, we included those who had been employed for at least 5 years since 1991 by the end of 2000, or later when this employment criterion was reached, up until the end of 2016.

Distal radioulnar joint stability measured with radiostereometry during the piano key test.

Distal radioulnar joint instability is difficult to grade by clinical examination and interobserver reliability is low. This study used a new and precise radiostereometry method for measurement of distal radioulnar joint translation. Eight human donor arms were positioned in a custom-made fixture and a standardized piano key test was done with pressure on the ulnar head.

Patients' experiences of being treated by an interprofessional student team compared with uniprofessional treatment by residents supported by nurses: a case study.

Clinical experience, preferably interprofessional, is an important part of health professionals' undergraduate training. In recent years, more and more patient treatment has been moving to outpatient clinics with research suggesting hat this shift is not compromising students' learning outcomes. The purpose of this study was to explore orthopedic outpatients' perceived experiences of being treated by an interprofessional student team consisting of one medical and one nursing student versus being treated by a resident doctor supported by nurses in a uniprofessional setup.

Two-year results of the Moovis trapeziometacarpal joint arthroplasty with focus on early complications.

In this prospective study, we aimed to analyse the early results of 200 consecutive total trapeziometacarpal joint arthroplasties using the Moovis cup, a new generation, dual-mobility, uncemented conical cup, with special focus on early complications. At the 24-month follow-up, we found clinically relevant improvement of function and comfort. Among intraoperative complications were nine intraoperative trapezial fractures, which were treated by screw osteosynthesis; prolonged immobilization; and conversion to cemented cup fixation or primary or secondary trapeziectomy.