shoulder

BACKGROUND: The occurrence of subacromial pain syndrome (SPS) is associated with the frequent handling and lifting of heavy loads and excessive repetitive work. Thus, assembly workers have a high prevalence of SPS. OBJECTIVE: The purpose of this study was to investigate differences in shoulder ROM, muscle strength, asymmetry ratio, function, productivity, and depression between workers with and without SPS. METHODS: Sixty-seven male workers (35 workers with SPS and 32 workers without SPS) participated in this study...

BACKGROUND Nasopharyngeal carcinoma (NPC) is a rare malignant tumor that arises from the mucosal lining epithelium of the nasopharynx, most commonly at the lateral nasopharyngeal recess or fossa of Rosenmüller. According to global age-standardized incidence rates (ASIRs), in 2018 the incidence rate of nasopharyngeal carcinoma varied from 2.1 to 0.4 per 100 000 in Asia and Europe, respectively. The number of deaths exceeded 50 000. It is one of the few head and neck tumors prone to distant metastasis, most commonly to bones, lung, and liver...

IMPORTANCE: Cervical spinal cord injury (SCI) causes devastating loss of upper extremity function and independence. Nerve transfers are a promising approach to reanimate upper limbs; however, there remains a paucity of high-quality evidence supporting a clinical benefit for patients with tetraplegia. OBJECTIVE: To evaluate the clinical utility of nerve transfers for reanimation of upper limb function in tetraplegia. DESIGN, SETTING, AND PARTICIPANTS: In this prospective case series, adults with cervical SCI and upper extremity paralysis whose recovery plateaued were enrolled between September 1, 2015, and January 31, 2019...

OBJECTIVE: This study assesses the effects of seat deflection in severe oblique rear impacts with laterally out-of-position ATDs where the head is not supported by the head restraint. METHOD: Six high-speed rear sled tests were conducted at 48 km/h with a 195 degree PDOF. A lap-shoulder belted 50th percentile Hybrid III ATD was leaned inboard and seated in six different front passenger seats (A-F); five of the seats were selected from mid-sized sedans and one was a non-production rigidified Seat Integrated Restraint (SIR) seat...

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OBJECTIVE: The analysis of evaluation of the efficacy and safety of Relatox in patients with cervical dystonia (CD). MATERIAL AND METHODS: Russian multicenter simple comparative randomized clinical trial. The study involved 180 patients of both sexes aged 18-65 years from 3 research centers of the Russian Federation. All patients had previously established diagnosis of CD and were randomized to one of two groups at 1 visit after the inclusion procedure and signing of informed consent...

BACKGROUND: Device-related shoulder impairment is a common complication in cardiac implantable electronic device (CIED) recipients. This study examined the relationship between the extent of device displacement toward the shoulder while in the supine position and ipsilateral shoulder impairment. METHODS: This cross-sectional study included 142 consecutive patients with CIEDs. The effects of the extent of device displacement on functional limitations, muscle strength, pain-disability, and quality of life were evaluated...

Shoulder elevation, defined here as arm raising, being essential for activities of daily living, dysfunctions represent a substantial burden in patients' lives. Owing to the complexity of the shoulder joint, the tightly coordinated muscular activity is a fundamental component, and neuromuscular impairments have devastating effects. A single-joint shoulder type version of the Hybrid Assistive Limb (HAL) allowing motion assistance based on the intention of the user via myoelectric activation has recently been developed, and its safety was demonstrated for shoulder rehabilitation...

This study employs first-principles calculations to elucidate the properties of sliding bilayer germanene (BLGe). The buckled structure of germanene can afford a greater number of metastable stacking configurations than planar graphene and enrich the electronic properties. Herein, a detailed analysis of the structural variety, shift-dependent energy bands, and spatial charge densities of BLGe is presented. The projected density of states (PDOS) reveals diverse structures such as plateaus, dips, symmetric/asymmetric peaks, and shoulders...

Handball is an Olympic contact sport with high physical, tactical, and technical demands by the players. Out of the different techniques, throwing is the most important one to be able to score. The objective of the study was to investigate the relationships between core muscle strength endurance (Bourban test: ventral, dorsal and lateral chain) and shoulder mobility/stability (Upper Quarter Y Balance test [YBT-UQ]) as well as throwing velocity in adolescent male sub-elite handball players ( N = 32, age: 17...

BACKGROUND: Dislocation of the shoulder joint is the most common type of joint dislocation. It is rare to be in a persistent dislocation that has not been reset. Successful arthroscopic treatment of the obsolete shoulder is relatively uncommon. CASE REPORT: We report a rare case of persistent anterior dislocation of the old shoulder joint in a 30-year-old female patient. The patient underwent an emergency shoulder dislocation at a local hospital after a traumatic injury and re-dislocated persistently after surgery...

UNLABELLED: Disasters share a common potential for significant ecological and psychosocial disruption at the individual, community, and societal levels, and are especially harmful to members of social groups in vulnerable situations, including youth in foster care and those recently emancipated from care. These young people are susceptible to mental health challenges and understanding their resiliency is key to mitigating pandemic-related harms. This qualitative study aims to (1) understand how the COVID-19 pandemic affected the mental health of older youth between the ages of 18 and 23 ( M  = 20...

BACKGROUND: Paddy cultivation of rice requires substantial physical strength, perseverance and manual labor. During the manual harvesting of paddy rice in Iran, laborers are exposed to several work-related physical risks. Paddy cultivation has been reported as one of the most important causes of nonfatal occupational injuries and accidents among farmers. With the aim of identifying which parts of the musculoskeletal structure are mostly affected as a result of working on paddy rice fields, the present study aimed to investigate the potential risk factors for musculoskeletal problems in paddy field workers in Mazandaran Province, Iran...

STUDY OBJECTIVE: To quantitatively assess and compare the efficacy and adverse effects of six different peripheral nerve block techniques after arthroscopic shoulder surgery (ASS). DESIGN: Bayesian network meta-analysis. METHODS: The PubMed, Embase, Web of Science, the Cochrane Central Register of Controlled Trials, China National Knowledge Infrastructure database, Chinese Scientific Journal database, Wan Fang databases were searched to retrieve randomized clinical trials comparing interscalene brachial plexus block, continuous interscalene brachial plexus block, supraclavicular brachial plexus block, suprascapular nerve block, combined suprascapular and axillary nerve block and local infiltration analgesia on postoperative pain, opioid consumption, and adverse effects (defined as Horner's syndrome, dyspnea, hoarseness, vomiting, and nausea) after ASS under general anesthesia (GA)...

BACKGROUND: The main function of the omohyoid muscle is to depress and withdraw the hyoid bone. This is an integral part of the swallowing process facilitating hyoid stabilization for tongue movement. Although the muscle is inferiorly attached to the scapula bone, its function during shoulder or scapula muscles contraction has yet not been studied. AIM: To investigate whether changes occur in omohyoid muscle morphology during shoulder muscles contraction. METHODS: The study included 40 healthy subjects (20 males and 20 females, Mean age: 25...

BACKGROUND: Although Grammont-style reverse total shoulder arthroplasty (RSA) showed excellent clinical results in Europe, its utility for Asian populations remains unclear. This study aimed to compare the French and Japanese populations in terms of range of motion (ROM), functional outcomes, and scapular notching rates in patients who underwent standard Grammont-style RSA. We hypothesized that RSA for the Japanese population may not provide as good ROM and functional results at the final follow-up as that for the French population...

PURPOSE: Software algorithms are increasingly available as clinical decision support tools (CDSTs) to support shared decision-making. We sought to understand if patient-specific predictions from a CDST would impact orthopedic surgeons' preoperative planning decisions and corresponding confidence. METHODS: We performed a survey study of orthopedic surgeons with at minimum of 2 years of independent shoulder arthroplasty experience. We generated patient profiles for 18 faux cases presenting with glenohumeral osteoarthritis and emailed 93 surgeons requesting their recommendation for anatomic or reverse total shoulder arthroplasty for each case and their certainty in their recommendation on a 4-point Likert scale...

INTRODUCTION: In patients with arthroscopic rotator cuff repair, tenotomy and tenodesis are the most performed surgical procedures for the biceps long head (BLH) pathologies. Controversy continues as to which surgical procedure provides better results. This study aimed to compare the clinical outcomes of tenotomy and tenodesis applied to the biceps long head in patients who underwent arthroscopic rotator cuff repair. MATERIALS AND METHODS: In our study, the clinical results of 706 patients who underwent arthroscopic rotator cuff repair with tenotomy or tenodesis on the long biceps head were evaluated retrospectively...

BACKGROUND: Reverse total shoulder arthroplasty (RTSA) can decrease shoulder pain and improve function. However, results reportedly deteriorate as patients approach mid-term follow-up and little is known about how this impacts physical health-related quality of life (PHRQOL) and mental health-related quality of life (MHRQOL). The study hypothesis was that shoulder function, pain, and medication use for pain would influence PHRQOL and MHRQOL. METHODS: This prospective cohort study involving subjects from 6 orthopedic clinics and 12 fellowship-trained surgeons evaluated the influence of RTSA on PHRQOL, MHRQOL, shoulder function, pain, instability, and medication use over the initial 7 years of a 10-year study, and device survivorship and revision rates...

PURPOSE: Current literature suggests a significant epidemiological association between traumatic brain injury (TBI) and proximal upper limb fractures in addition to major clinical consequences. A systematic review was conducted to assess how TBI is taken into consideration in interventional studies on shoulder fractures. METHODS: The following data sources were used: MEDLINE, EMBASE, EBM Reviews, CINAHL, and OpenGrey databases. Study selection included interventional randomized clinical trials and prospective cohort studies on shoulder fractures published in English or French between 2008 and 2020...