Comparison of 5-year cup and stem migration between ceramic-on-ceramic and ceramic-on-polyethylene bearing in press-fit total hip arthroplasty: a randomised controlled trial using radiostereometric analysis.

Introduction: The inelasticity of ceramic bearings might affect primary stability and migration of implants in press-fit total hip arthroplasty (THA). This randomised controlled trial compares migration patterns of the uncemented Delta-TT cup and H-MAX S stem between ceramic and polyethylene liners, up to 5 years follow-up.

Methods: Patients receiving primary press-fit THA were randomly allocated to a ceramic (  28) or polyethylene (  25) liner.

Comparison of early migration patterns between a ceramic and polyethylene liner in uncemented Trabecular Titanium cups: a 2-year randomized controlled trial of 52 hips using radiostereometric analysis.

Background And Purpose: Ceramic liners may reduce early stability of uncemented acetabular components due to higher stiffness. However, the bone ingrowth capacities of porous trabecular titanium might compensate for this effect. This prospective randomized trial quantifies migration patterns of the Delta-TT cup, and compares polyethylene and ceramic liners.

Ten percent re-dislocation rate 13 years after the arthroscopic Bankart procedure.

Purpose: The aim of the present study was to determine the long-term outcome after the arthroscopic Bankart procedure, in terms of recurrent instability, shoulder function, glenohumeral arthropathy and patient satisfaction.

Methods: Patients who underwent the arthroscopic Bankart procedure between January 1999 and the end of December 2005 were invited to complete a set of Patient Reported Outcome Measures (PROMs) and visit the hospital for clinical and radiological assessment. PROMs included the Western Ontario Shoulder Instability Index (WOSI), the Oxford Shoulder Instability Score (OSIS) and additional questions on shoulder instability and patient satisfaction.

The quantification of glenoid bone loss in anterior shoulder instability; MR-arthro compared to 3D-CT.

Objective: The purpose of this study is to investigate if magnetic resonance imaging with intra-articular contrast (MR-arthro) is as reliable as three-dimensionally reconstructed computed tomography imaging (3D-CT) in quantifying the glenoid bone loss in patients with anterior shoulder instability.

Materials And Methods: Thirty-five patients were included. Sagittal MR-arthro and 3D-CT images of the glenoid surface were obtained pre-operatively.

Ramus circumflexissimus--a rare coronary anomaly detected by coronary computed tomography angiography.

We present a case of L-1 type solitary (left) coronary artery that was detected with coronary computed tomography angiography and confirmed by invasive coronary angiography in a female patient with atypical chest pain. Solitary coronary artery anomalies are rare. The L-1 subtype is thought to be a benign type.

Is a single direct MR arthrography series in ABER position as accurate in detecting anteroinferior labroligamentous lesions as conventional MR arthography?

Purpose: The purpose of this study is to retrospectively compare accuracy of single magnetic resonance (MR) arthrography series in Abduction External Rotation (ABER) with conventional MR arthrography for detection and characterisation of anteroinferior labroligamentous lesions, with arthroscopy as reference standard. Inter-observer variability of both protocols was determined.

Methods And Materials: Institutional review board approval was obtained; informed consent was waived.

Detection of partial-thickness supraspinatus tendon tears: is a single direct MR arthrography series in ABER position as accurate as conventional MR arthrography?

Purpose: The purpose of this study was to retrospectively evaluate sensitivity and specificity of a single magnetic resonance (MR) arthrography series in abduction external rotation (ABER) position compared with conventional MR arthrography for detection of supraspinatus tendon tears, with arthroscopy as gold standard, and to assess interobserver variability.

Materials And Methods: Institutional review board approval was obtained; informed consent was waived. MR arthrograms of 250 patients (170 men and 80 women; mean age, 36 years) were retrospectively and independently evaluated by three observers.

Quantification of a glenoid defect with three-dimensional computed tomography and magnetic resonance imaging: a cadaveric study.

Bone loss of the glenoid is a common finding in anterior glenohumeral instability. Several methods to measure the size of a glenoid defect have been described but have not been validated. In this study, 14 cadaver glenoids with a randomly created anteroinferior glenoid defect were used for validation of the so-called circle method.

MR colonography with limited bowel preparation: patient acceptance compared with that of full-preparation colonoscopy.

Purpose: To prospectively evaluate participants' experience and preference of magnetic resonance (MR) colonography with limited bowel preparation compared with full-preparation colonoscopy in participants at increased risk for colorectal cancer.

Materials And Methods: This study had institutional review board approval; all participants gave written informed consent. In this multicenter study, consecutive participants undergoing conventional colonoscopy because of a personal or family history of colorectal cancer or adenomatous polyps underwent MR colonography 2 weeks prior to colonoscopy.

Feasibility study of computed tomography colonography using limited bowel preparation at normal and low-dose levels study.

The purpose was to evaluate low-dose CT colonography without cathartic cleansing in terms of image quality, polyp visualization and patient acceptance. Sixty-one patients scheduled for colonoscopy started a low-fiber diet, lactulose and amidotrizoic-acid for fecal tagging 2 days prior to the CT scan (standard dose, 5.8-8.

MR colonography with limited bowel preparation compared with optical colonoscopy in patients at increased risk for colorectal cancer.

Purpose: To prospectively evaluate the diagnostic performance of magnetic resonance (MR) colonography by using limited bowel preparation in patients with polyps of 10 mm or larger in diameter in a population at increased risk for colorectal cancer, with optical colonoscopy as the reference standard.

Materials And Methods: The institutional review boards of all three hospitals approved the study. All patients provided written informed consent.

MRI in evaluating atrophy of the external anal sphincter in patients with fecal incontinence.

Objective: External anal sphincter atrophy seen at endoanal MRI may predict poor outcome of surgical anal sphincter repair for an external anal sphincter defect. The purposes of this study were to compare external phased-array MRI to endoanal MRI for depicting external anal sphincter atrophy in patients with fecal incontinence and to evaluate observer reproducibility in detecting external anal sphincter atrophy with these techniques.

Subjects And Methods: Thirty patients with fecal incontinence (23 women, seven men; mean age, 58.

Anal sphincter defects in patients with fecal incontinence: endoanal versus external phased-array MR imaging.

Purpose: To prospectively compare external phased-array magnetic resonance (MR) imaging with endoanal MR imaging in depicting external and internal anal sphincter defects in patients with fecal incontinence and to prospectively evaluate observer reproducibility in the detection of external and internal anal sphincter defects with both MR imaging techniques.

Materials And Methods: The medical ethics committees of both participating hospitals approved the study, and informed consent was obtained. Thirty patients (23 women, seven men; mean age, 58.

How to exclude the dilated false lumen in patients after a type B aortic dissection? The cork in the bottleneck.

Purpose: To report techniques for excluding the dilated false lumen associated with chronic type B aortic dissection following placement of a stent-graft in the true lumen.

Case Reports: Two patients underwent stent-graft implantation for a dilated false lumen after chronic aortic dissection, but the false lumen was not excluded from the circulation by this procedure. The false lumen was obliterated in one case with Greenfield filters and detachable balloons placed above a renal artery orifice that was perfused via the false lumen.

Perinatal mortality: clinical value of postmortem magnetic resonance imaging compared with autopsy in routine obstetric practice.

Objective: To compare postmortem magnetic resonance imaging (MRI) with autopsy in perinatal deaths. To determine the acceptance and feasibility of postmortem perinatal MRI.

Design: Cohort study.

High-resolution endovaginal MR imaging in stress urinary incontinence.

The causes of stress urinary incontinence are not completely known. Recent papers have stressed the importance of more anatomical information, which may help to elucidate the mechanism of stress urinary incontinence. The purpose of this study was to evaluate the prevalence of lesions of the urethral support mechanism and lesions (defects and scars, thinning) of levator ani muscle with endovaginal MRI in a case-control study.