Actueel SNN

  Spatial mapping of humeral head bone density


Short-stem humeral replacements achieve fixation by anchoring to the metaphyseal trabecular bone. Fixing the implant in high-density bone can provide strong fixation and reduce the risk of loosening. However, there is a lack of data mapping the bone density distribution in the proximal humerus. The aim of the study was to investigate the bone density in proximal humerus.

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Geplaatst door: Paul van der Tas op: 20 mei 2017

  Enhancement of rotator cuff tendon–bone healing with fibroblast growth factor 2 impregnated in gelatin hydrogel sheets in a rabbit model


Background

Application of fibroblast growth factor 2 (FGF-2) may improve the healing response after rotator cuff (RC) surgical repair. This study aimed to determine whether FGF-2–impregnated gelatin hydrogel sheet (GHS) incorporation into the bony trough on the greater tuberosity facilitates healing after RC surgical repair in rabbits.

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Geplaatst door: Paul van der Tas op: 20 mei 2017

  Does acromioplasty result in favorable clinical and radiologic outcomes in the management of chronic subacromial pain syndrome? A double-blinded randomized clinical trial with 9 to 14 years' follow-up


Background

The treatment effect of acromioplasty for chronic subacromial pain syndrome (SAPS) on long-term shoulder function and rotator cuff deterioration has still to be determined. This study aimed to determine the long-term clinical and radiologic treatment effect of arthroscopic acromioplasty in patients with chronic SAPS.

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Geplaatst door: Paul van der Tas op: 20 mei 2017

  The relationship between the incidence of adhesive capsulitis and hemoglobin A1c


Justin H. Chan et al | JSES mei 2017

Background

Previous studies have shown no correlation between adhesive capsulitis and hemoglobin A1c (HbA1c). However, HbA1c is only a measure of short-term blood sugar control. We created a previously nonvalidated variable, cumulative HbA1c, that uses HbA1c values over time to estimate the total disease burden a single individual experiences over a period. In this study, we aimed to evaluate whether a correlation exists between cumulative HbA1c levels in diabetic patients and the prevalence of frozen shoulder. We hypothesized that poor long-term glucose control would be correlated with increased incidence of adhesive capsulitis.

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Geplaatst door: Paul van der Tas op: 20 mei 2017

  Quantitative assessment of fatty infiltration and muscle volume of the rotator cuff muscles using 3-dimensional 2-point Dixon magnetic resonance imaging


Background

In patients with rotator cuff tears, muscle degeneration is known to be a predictor of irreparable tears and poor outcomes after surgical repair. Fatty infiltration and volume of the whole muscles constituting the rotator cuff were quantitatively assessed using 3-dimensional 2-point Dixon magnetic resonance imaging.

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Geplaatst door: Paul van der Tas op: 20 mei 2017

  What is the hardware removal rate after anteroinferior plating of the clavicle? A retrospective cohort study


Background

Plate position in the operative treatment of displaced midshaft clavicle fractures or nonunions is most often on the superior side. However, superior clavicular plating often results in complaints of plate prominence and local soft tissue irritation, necessitating hardware removal. We have used anteroinferior placement of the plate in the hope of increasing biomechanical stability and fixation and also of lowering complaints of plate prominence and soft tissue irritation. In this report, we set out to study the percentage of hardware removal in our group of patients treated with anteroinferior plating of the clavicle after long-term follow-up.

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Geplaatst door: Paul van der Tas op: 9 mei 2017

  Effects of short malunion of the clavicle on in vivo scapular kinematics


DooSup Kim et al | JSES mei 2017

Background

Short malunion of the clavicle after fracture can change scapular kinematics and alter clinical outcome. However, the effects of malunion on kinematics and outcomes remains poorly understood because there have been no in vivo studies measuring changes during active motion with malunion. This study aimed to measure and to compare in vivo 3-dimensional (3D) scapular kinematics between normal shoulders and shoulders with short malunion using 3D–2-dimensional model image registration techniques.

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Geplaatst door: Paul van der Tas op: 9 mei 2017

  One-stage surgical treatment for concomitant rotator cuff tears with shoulder stiffness has comparable results with isolated rotator cuff tears: a systematic review


Background

Addressing preoperative shoulder stiffness before rotator cuff repair (RCR) is advocated, but the effectiveness of this approach is debatable. We hypothesized that 1-stage treatment of concomitant rotator cuff tear (RCT) with shoulder stiffness has comparable results with isolated RCT.

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Geplaatst door: Paul van der Tas op: 9 mei 2017

  Triceps-sparing extra-articular step-cut olecranon osteotomy for distal humeral fractures: an anatomic study


Background

This anatomic study investigated the distal humeral articular surface exposure achievable through a triceps-sparing oblique extra-articular osteotomy of the olecranon with a step-cut modification compared with the anconeus flap transolecranon apex distal chevron osteotomy. In addition, the bone contact surface areas of the osteotomized surfaces after transolecranon and extra-articular osteotomies were compared.

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Geplaatst door: Paul van der Tas op: 9 mei 2017

  Volumetric evaluation of the rotator cuff musculature in massive rotator cuff tears with pseudoparalysis


Background:

If the balance of the rotator cuff force couple is disrupted, pseudoparalysis may occur, but the exact mechanism remains unknown. This study investigated the effect of rotator cuff force couple disruption on active range of motion in massive rotator cuff tear (mRCT) by rotator cuff muscle volume analysis.

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Geplaatst door: Paul van der Tas op: 9 mei 2017

  Posterior glenoid bone grafting in total shoulder arthroplasty for osteoarthritis with severe posterior glenoid wear


Background

Total shoulder arthroplasty (TSA) in cases with posterior wear can be addressed by eccentric reaming of the anterior glenoid or by augmenting the posterior glenoid with bone grafting or augmented glenoid implants. We report the results of TSA with posterior glenoid bone grafting (PGBG) with humeral head autograft in patients with shoulder osteoarthritis and severe posterior glenoid wear.

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Geplaatst door: Paul van der Tas op: 9 mei 2017

  Can glenoid wear be accurately assessed using x-ray imaging? Evaluating agreement of x-ray and magnetic resonance imaging Walch classification


Background

The Walch classification is the most recognized means of assessing glenoid wear in preoperative planning for shoulder arthroplasty. This classification relies on advanced imaging, which is more expensive and less practical than plain radiographs. The purpose of this study was to determine whether the Walch classification could be accurately applied to x-ray images compared with magnetic resonance imaging (MRI) as the gold standard. We hypothesized that x-ray images cannot adequately replace advanced imaging in the evaluation of glenoid wear.

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Geplaatst door: Paul van der Tas op: 9 mei 2017

  The effect of the beach-chair position angle on cerebral oxygenation during shoulder surgery


Background

Although the safety of the beach-chair position (BCP) is widely accepted, rare devastating neurologic complications have been reported and attributed to cerebral hypoperfusion. Cerebral oxygenation (regional oxygen saturation [rSO2]) can be monitored noninvasively using near-infrared spectroscopy. The purpose of this study was to determine the effect of BCP angle on cerebral oxygenation in patients undergoing shoulder surgery in the BCP.

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Geplaatst door: Paul van der Tas op: 9 mei 2017

  A practical, evidence-based, comprehensive (PEC) physical examination for diagnosing pathology of the long head of the biceps


Background

Clinical examination of the shoulder joint has gained attention as clinicians aim to use an evidence-based examination of the biceps tendon, with the desire for a proper diagnosis while minimizing costly imaging procedures. The purpose of this study is to create a decision tree analysis that enables the development of a clinical algorithm for diagnosing long head of biceps (LHB) pathology.

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Geplaatst door: Paul van der Tas op: 9 mei 2017

  Reverse shoulder arthroplasty in patients with os acromiale


Background

Os acromiale has been reported in up to 15% of the general population. Reverse total shoulder arthroplasty (RTSA) increases deltoid tension, which could potentially lead to excessive stress on a pre-existent os acromiale. The purpose of this study was to determine the outcome and complications of primary RTSA in patients with radiographic evidence of an os acromiale.

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Geplaatst door: Paul van der Tas op: 9 mei 2017

  Computer-assisted planning and patient-specific guides for the treatment of midshaft clavicle malunions


Background

The surgical treatment of malunions after midshaft clavicle fractures is associated with a number of potential complications and the surgical procedure is challenging. However, with appropriate and meticulous preoperative surgical planning, the surgical correction yields satisfactory results. The purpose of this study was to provide a guideline and detailed overview for the computer-assisted planning and 3-dimensional (3D) correction of malunions of the clavicle.

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Geplaatst door: Paul van der Tas op: 13 april 2017

  Radiographic changes and clinical outcomes associated with an adjustable diaphyseal press-fit humeral stem in primary reverse shoulder arthroplasty


Background

Press-fit humeral fixation in reverse shoulder arthroplasty (RSA) has become increasingly popular; however, radiographic analysis of these stems is limited. We aimed to evaluate the radiographic and clinical outcomes of an adjustable diaphyseal press-fit humeral stem in primary RSA.

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Geplaatst door: Paul van der Tas op: 13 april 2017

  Radiographs and computed tomography scans show similar observer agreement when classifying glenoid morphology in glenohumeral arthritis


Background

Glenohumeral subluxation and glenoid morphology are commonly evaluated in primary osteoarthritis by use of the Walch classification. The reliability of this classification system has been analyzed only by computed tomography (CT). The purpose of this study was to determine the reliability of plain axillary radiographs compared with CT scans.

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Geplaatst door: Paul van der Tas op: 13 april 2017

  A comparison of onlay versus inlay glenoid component loosening in total shoulder arthroplasty


Background

Glenoid component loosening is common in total shoulder arthroplasty (TSA), often resulting from the mechanical interaction of glenohumeral components. This cadaveric study was performed to evaluate and to compare commercially available onlay and inlay glenoid prosthetic designs with respect to loading characteristics and loosening.

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Geplaatst door: Paul van der Tas op: 6 april 2017

  Refuting the lipstick sign


Background

Arthroscopic examination of the tendon has been described as the “gold standard” for diagnosis of tendinitis of the long head of the biceps (LHB). An arthroscopic finding of an inflamed and hyperemic LHB within the bicipital groove has been described as the “lipstick sign.” Studies evaluating direct visualization in diagnosis of LHB tendinitis are lacking.

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Geplaatst door: Paul van der Tas op: 6 april 2017

  Low-grade infections in nonarthroplasty shoulder surgery


Umair Khan et al | JSES april 2017

Background

Recent studies have identified the diagnostic challenge of low-grade infections after shoulder arthroplasty surgery. Infections after nonarthroplasty procedures have not been reported. This study assessed patient-related risk factors, outcomes, and clinical presentation of low-grade infection after open and arthroscopic nonarthroplasty shoulder surgery.

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Geplaatst door: Paul van der Tas op: 6 april 2017

  Partial-thickness tears involving the rotator cable lead to abnormal glenohumeral kinematics


Gregory J. Pinkowsky et al | JSES april 2017

Hypothesis

The objective of this study was to determine the biomechanical function of the rotator cable when a partial-thickness (>50%) tear is present. We compared intact specimens with partial tears of the anterior cable followed by partial anterior and posterior tears in regard to glenohumeral kinematics and translation. The hypothesis was that partial-thickness tears will lead to abnormal glenohumeral biomechanics, including glenohumeral translation and path of glenohumeral articulation.

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Geplaatst door: Paul van der Tas op: 6 april 2017

  17e regionaal SchouderNetwerk een feit


Op 29 september 2016 heeft de vergadering van SchouderNetwerken Nederland besloten als 17e Regionaal SchouderNetwerk NoordHolland Noord toe telaten omdat zij voldoen aan alle toelatingseisen.

Geplaatst door: Paul van der Tas op: 30 september 2016