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PRECIOUS METAL, PRECIOUS STONES & JEWELLERY: ARTWORKS & DESIGN. They are one of the highlights of the world of jewellery. From the rectangular to the round and rounded: Cufflinks are timeless eye catchers. Those who adorn their shirt sleeves with such works of art can be sure to attract attention. This knowledgeable publication introduces readers to the world of cufflinks, tracing their story and showing rare designs. Cufflinks are among the few pieces of jewellery worn by men and, like wristwatches, are an essential part of mens fashion. The first cufflinks appeared as early as the seventeenth century, but they did not come into common usage until the late eighteenth century as their development was closely connected to that of mens shirts. Nowadays cufflinks are little artworks that allow men to express their own personality in an understated way. Their design and the materials from which they are made can speak volumes about the wearers preferences, hobbies and profession.

Occupation ratio and fatty infiltration are important parameters for evaluating patients with rotator cuff tears. We analyzed the occupation ratio using a deep-learning framework and studied the fatty infiltration of the supraspinatus muscle using an automated region-based Otsu thresholding technique. To calculate the amount of fatty infiltration of the supraspinatus muscle using an automated region-based Otsu thresholding technique. The mean Dice similarity coefficient, accuracy, sensitivity, specificity, and relative area difference for the segmented lesion, measuring the similarity of clinician assessment and that of a deep neural network, were 0.97, 99.84, 96.89, 99.92, and 0.07, respectively, for the supraspinatus fossa and 0.94, 99.89, 93.34, 99.95, and 2.03, respectively, for the supraspinatus muscle. The fatty infiltration measure using the Otsu thresholding method significantly differed among the Goutallier grades (Grade 0; 0.06, Grade 1; 4.68, Grade 2; 20.10, Grade 3; 42.86, Grade 4; 55.79, p  < 0.0001). The occupation ratio and fatty infiltration using Otsu thresholding demonstrated a moderate negative correlation ( ρ  = − 0.75, p  < 0.0001). This study included 240 randomly selected patients who underwent shoulder magnetic resonance imaging (MRI) from January 2015 to December 2016. We used a fully convolutional deep-learning algorithm to quantitatively detect the fossa and muscle regions by measuring the occupation ratio of the supraspinatus muscle. Fatty infiltration was objectively evaluated using the Otsu thresholding method. The proposed convolutional neural network exhibited fast and accurate segmentation of the supraspinatus muscle and fossa from shoulder MRI, allowing automatic calculation of the occupation ratio. Quantitative evaluation using a modified Otsu thresholding method can be used to calculate the proportion of fatty infiltration in the supraspinatus muscle. We expect that this will improve the efficiency and objectivity of diagnoses by quantifying the index used for shoulder MRI.

Background Massive degenerative rotator cuff tears (MRCTs) represent a persistent challenge in shoulder surgery. While arthroscopic rotator cuff repair (ARCR) remains a widely accepted treatment with good functional outcomes, it is associated with a risk of retear and progression to cuff tear arthropathy. Reverse shoulder arthroplasty (RSA) has emerged as a viable alternative, particularly in cases where the reparability of the cuff is uncertain, offering pain relief and functional improvement. However, the optimal treatment approach for repairable MRCT in patients aged 60 to 80 years remains debated. This trial aims to assess whether RSA provides non-inferior outcomes to ARCR in patients with degenerative MRCTs, with a particular focus on function, pain, and quality of life. Methods This is a prospective, randomized, controlled, non-inferiority trial. A total of 145 patients with symptomatic, repairable MRCT will be enrolled and randomized in a 1:1 ratio to undergo either ARCR or RSA. The primary outcome is the American Shoulder and Elbow Surgeons (ASES) score at 24 months postoperatively. Secondary outcomes include ASES at 6 weeks and 6 months; Visual Analog Scale (VAS) for pain; Single Assessment Numeric Evaluation (SANE); Constant score; range of motion (ROM) in flexion, extension, and internal/external rotation; repair integrity (ultrasound for ARCR, radiographs for RSA); and complication rates. PROMs will be assessed at baseline, 1.5, 6, and 24 months. All adverse events and complications will be systematically recorded. Discussion This trial will provide robust comparative data to assess whether RSA is non-inferior to ARCR at two years postoperatively in terms of shoulder function and patient-reported outcomes in patients with repairable MRCT. The results aim to support evidence-based decision-making in clinical practice. Trial registration The protocol was approved by the Ethics Committee Board (CCER 2023–00111) in March 2023 and by ClinicalTrial.gov (NCT05807854).

Background Rotator cuff tear is a common cause of shoulder disability and results in patients predominantly complaining of pain and loss of motion and strength. Traumatic rotator cuff tears are typically managed surgically followed by ~ 20 weeks of rehabilitation. However, the timing and intensity of the postoperative rehabilitation strategy required to reach an optimal clinical outcome is unknown. Early controlled and gradually increased tendon loading has been suggested to positively influence tendon healing and recovery. The aim of this trial is therefore to examine the effect of a progressive rehabilitation strategy on pain, physical function and quality of life compared to usual care (that limits tendon loading in the early postoperative phase) in patients who have a rotator cuff repair of a traumatic tear. Methods The current study is a randomized, controlled, outcome-assessor blinded, multicenter, superiority trial with a two-group paralleled design. A total of 100 patients with surgically repaired traumatic rotator cuff tears will be recruited from up to three orthopedic departments in Denmark, and randomized to either a progressive early passive and active movement program or a limited early passive movement program (usual care). The primary outcome measure will be the change from pre-surgery to 12 weeks post-surgery in the Western Ontario Rotator Cuff Index questionnaire. Secondary outcomes include the Disabilities Arm, Shoulder and Hand questionnaire (DASH), range of motion, strength and tendon healing characteristics from ultrasound measurements at 12 months follow up. Discussion We hypothesized that patients who receive the progressive rehabilitation strategy will benefit more with respect to pain reduction, physical function and quality of life than those who receive care as usual. If this is confirmed our study can be used clinically to enhance the recovery of patients with traumatic rotator cuff tear. Trial registration ClinicalTrials.gov, NCT02969135 . Registered on 15 November 2016.

The positive effect of platelet-rich plasma (PRP) on tendon metabolism has been extensively investigated and proven in vitro. Additionally, in vivo animal studies have correlated the application of PRP with the enhancement of tenocyte anabolic activity in the setting of tendon degeneration. However, less is known about its in vivo effect on human tendon biology. The purpose of the current prospective randomized comparative study was to evaluate the effect of PRP on torn human supraspinatus tendon. Twenty consecutive eligible patients with painful and magnetic resonance imaging (MRI)-confirmed degenerative supraspinatus tendon tears were randomized in a one-to-one ratio into two groups. The patients in the experimental group (n = 10) underwent an ultrasound-guided autologous PRP injection in the subacromial space 6 weeks before the scheduled operation. In the control group (n = 10), no injection was made prior to surgery. Supraspinatus tendon specimens were harvested from the lateral end of the torn tendon during shoulder arthroscopy and were evaluated under optical and electron microscopy. In the control group, a mixed cell population of oval and rounded tenocytes within disorganized collagen and sites of accumulated inflammatory cells was detected. In contrast, the experimental group yielded abundant oval-shaped cells with multiple cytoplasmic processes within mainly parallel collagen fibers and less marked inflammation, simulating the intact tendon structure. These findings indicate that PRP can induce microscopic changes in the ruptured tendon by stimulating the healing process and can facilitate a more effective recovery.

Introduction Pain management and prevention of muscle atrophy are key rehabilitation challenges following arthroscopic rotator cuff repair (ARCR). Despite the potential muscle atrophy-reducing and analgesic effects of neuromuscular electrical stimulation (NMES), evidence supporting its use in post-ARCR rehabilitation remains limited. This study aimed to evaluate the clinical efficacy of home-based NMES intervention for promoting early functional recovery after ARCR. Methods A total of 63 ARCR patients were randomized into the NMES group ( n  = 32) and MENS (Micro-current electrical nerve stimulation) group ( n  = 31), both receiving a 6-week home-based intervention (5 sessions weekly, 30 min per session) following surgery. The NMES group used neuromuscular electrical stimulation equipment, while the MENS group used identical devices without current output. The primary outcome was the Constant-Murley Shoulder (CMS) score, with secondary outcomes including resting and active visual analog scale (VAS) pain scores, deltoid muscle thicknes, shoulder range of motion (ROM), muscle strength, and Tampa Scale for Kinesiophobia scores. Assessments were conducted preoperatively, at 6 weeks, and 3 months postoperatively. Results At 6 weeks postoperatively, the NMES group exhibited a significantly higher CMS than the MENS group (76.10 ± 9.43 vs. 71.22 ± 9.2 p  = 0.032), along with superior active pain relief (active VAS: 4.1 ± 0.9 vs. 3.4 ± 0.7 p  = 0.003), greater forward flexion ROM (151.7 ± 11.3 vs. 141.8 ± 13.6 p  = 0.003), and thicker deltoid muscle thickness (1.02 ± 0.06 vs. 0.91 ± 0.06 p  < 0.001). The NMES group also demonstrated lower TSK scores (31.06 ± 6.69 vs. 35.42 ± 7.76 p  = 0.020) and greater adductor strength (40.9 ± 16.7 vs. 33.5 ± 12.2 p  = 0.048). By 3 months postoperatively, intergroup differences persisted only in abductor ROM, muscle strength, and deltoid thickness, with no significant disparities in other measured indices. Conclusions Home-based NMES effectively accelerates functional recovery, enhances pain management, and mitigates kinesiophobia within 6 weeks post-ARCR, with partial maintenance of these benefits at the 3-month follow-up. This intervention offers a safe adjunctive strategy for early rehabilitation, particularly suited to patients requiring rapid functional restoration; however, long-term efficacy remains to be confirmed.To evaluate the acceptability of MyCheck for asymptomatic sexually transmissible infections (STIs) testing. Trial registration (Chinese Clinical Trial Registry ( https://www.chictr.org.cn ), No. ChiCTR2400088194, 13/08/2024)

Purpose The purpose of the study was to compare the safety and efficacy of autologous mesenchymal stem cells (MSCs) embedded in a xenogenic scaffold for repairing the supraspinatus tendon. Methods This was a randomized, double-blind and placebo-controlled trial evaluating patients with full-thickness rotator cuff tears (Eudra-CT, 2007–007630-19). Effectiveness was evaluated using the Constant score and a visual analogue pain scale (VAS). Constant score has four domains including pain (15 possible points), activities of daily living (20 possible points), mobility (40 possible points), and strength (25 possible points). Scores range from 0 points (most disability) to 100 points (least disability). The structural integrity of the repaired tendon was assessed by magnetic resonance imaging (MRI) according to Patte and Thomazeau classification criteria. The primary study end point was an improvement in the Constant score by 20 points at one year compared to initial assessment. Results The trial was stopped due to adverse effects observed in both groups. Only thirteen patients were included and analyzed. The Constant questionnaire showed a significant improvement in the MSC treatment group compared with the preoperative data (p = 0.0073). Secondary outcome measures were similar in both groups. Conclusions Our study showed preliminary inconclusive clinical outcomes in the patients treated with MSCs. Adverse events revealed the need for further approaches using scaffolds of a different nature or perhaps no scaffolds, in the context of small joints. Trial registration Eudra-CT, 2007-007630-19 . Registered on 30 January 2008. Level of evidence A Level 1 of evidence treatment study.

Background Degenerative rotator cuff tears are common and are often treated with surgical repair. Randomised trials have not shown a clear advantage to surgery over non-surgical treatment, but there have been no published placebo-controlled trials investigating rotator cuff repair. This study aims to compare arthroscopic shoulder surgery with rotator cuff repair to surgery without rotator cuff repair (placebo) for improving shoulder pain and function in people with shoulder pain and full-thickness degenerative rotator cuff tears. Methods The study is a multicentre two-parallel arm, blinded, individually randomised controlled trial (RCT). Participants will be people aged 40–75 years (inclusive) with more than 6 months of shoulder pain, a degenerative (non-traumatic) full thickness rotator cuff tear 1 to 4 cm in length for whom surgery is recommended and repair of the tear is the main reason for surgery. The intervention is arthroscopic surgery (including—as indicated—bursectomy, debridement, acromioclavicular joint resection, acromioplasty and biceps tenodesis or tenotomy) with rotator cuff repair. The control is the same arthroscopic shoulder surgery without rotator cuff repair. Participants will be randomised to cuff repair or no cuff repair in a 1:1 ratio intra-operatively, after all other surgical procedures have been performed. Participants, follow-up surgeons, physiotherapists, study staff and statisticians will be blinded. Post-surgical rehabilitation will be usual care for rotator cuff repair in both groups. The primary outcome will be shoulder pain and function measured using the Western Ontario Rotator Cuff Index at 6 months post-surgery. Discussion The ARC trial will provide low bias evidence on a common surgical procedure: rotator cuff repair for degenerative tears. Trial registration The trial is registered with the Australian New Zealand Clinical Trials Registry (ACTRN12620000789965) on 5 August 2020 and the WHO International Clinical Trials Registry Platform (universal trial number U1111-1251-6599).

Background The aim of this study was to explore the feasibility of using a non-absorbable biocompatible polyester patch to augment open repair of massive rotator cuff tears (Patch group) and compare outcomes with other treatment options (Non-patch group). Methods Participants referred to orthopaedic clinics for rotator cuff surgery were recruited. Choice of intervention (Patch or Non-patch) was based on patient preference and intra-operative findings. Oxford Shoulder Score (OSS), Shoulder Pain and Disability Index (SPADI), and Constant score were completed at baseline and 6 months. Shoulder MRI was performed at baseline and 6 months to assess fat fraction and Goutallier classification pre- and post- treatment. Feasibility outcomes (including retention, consent and missing data) were assessed. Results Sixty-eight participants (29 in the Patch group, 39 in Non-patch group) were included (mean age 65.3 years). Conversion to consent (92.6%), missing data (0% at baseline), and attrition rate (16%) were deemed successful feasibility endpoints. There was significant improvement in the Patch group compared to Non-patch at 6 months in OSS (difference in medians 9.76 (95% CI 2.25, 17.29) and SPADI: 22.97 (95% CI 3.02, 42.92), with no substantive differences in Constant score. The patch group had a higher proportion of participants improving greater than MCID for OSS (78% vs 62%) and SPADI (63% vs 50%) respectively. Analysis of the 48 paired MRIs demonstrated a slight increase in the fat fraction for supraspinatus (53 to 55%), and infraspinatus (26 to 29%) at 6 months. These differences were similar and in the same direction when the participants were analysed by treatment group. The Goutallier score remained the same or worsened one grade in both groups equally. Conclusions This study indicates that a definitive clinical trial investigating the use of a non-absorbable patch to augment repair of massive rotator cuff tears is feasible. In such patients, the patch has the potential to improve shoulder symptoms at 6 months. Trial registration ISRCTN, ISRCTN79844053 , Registered 15th October 2014 (retrospectively registered).

Background Abnormal posture is known to affect the efficacy of exercise therapy for musculoskeletal diseases. However, no studies to date have examined the effect of exercise programs should take into account the posture of the upper body in patients with rotator cuff disease. This study aimed to assess how rotator cuff and corrective exercises impact shoulder function and muscle strength post-arthroscopic rotator cuff repair surgery, providing tailored rehabilitation programs for patients with forward posture. Methods Ninety male patients who underwent arthroscopic rotator cuff repair participated in this study. The patients were randomly divided into three groups corrective exercise group (CEG, n =  29), rotator cuff exercise group (REG, n =  27), and control group (CG, n =  28). Each group was instructed to apply different exercise programs to correct posture and enhance rotator cuff strength. All patients were checked by the American Shoulder and Elbow Surgeons (ASES) score, Constant score and muscle strength, and range of motion preoperatively and postoperatively at 6 months and 1 year. Results ASES shoulder function scores showed significant difference between the three groups ( p  = 0.002, F = 7.03), indicating that the corrective exercise program was more beneficial than rotator cuff exercises ( p  = 0.009, F = 3.78). A significant intergroup difference in mean Constant score was also noted ( p  = 0.025, F = 3.86), while a statistically significant interaction between time and group was observed ( p  = 0.032, F = 2.96). Conclusions These results suggested that a corrective exercise program can improve shoulder muscle strength and function after rotator cuff repair in male patients with a forward shoulder posture.