4,504 results match your criteria Deltoid Fibrosis


Brown Adipose Tissue and Skeletal Muscle F-FDG Activity After a Personalized Cold Exposure Is Not Associated With Cold-Induced Thermogenesis and Nutrient Oxidation Rates in Young Healthy Adults.

Front Physiol 2018 16;9:1577. Epub 2018 Nov 16.

PROFITH (PROmoting FITness and Health through Physical Activity) Research Group, Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain.

Cold induced thermogenesis (CIT) in humans results mainly from the combination of both brown adipose tissue (BAT) and skeletal muscle thermogenic activity. The relative contribution of both tissues to CIT and to cold induced nutrient oxidation rates (CI-NUTox) remains, however, to be elucidated. We investigated the association of BAT and skeletal muscle activity after a personalized cold exposure with CIT and CI-NUTox in 57 healthy adults (23. Read More

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November 2018

The Role of the Axillary Arch Variant in Neurovascular Syndrome of Brachial Plexus Compression.

Cureus 2018 Jun 25;10(6):e2875. Epub 2018 Jun 25.

Neurosurgery, Seattle Science Foundation, Seattle, USA.

Axillary arch muscles are often found. In their course through this area, they might interfere with regional neurovascular structures. This case report will examine the presence of the axillary arch muscle and its implication in brachial plexus compression. Read More

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June 2018
1 Read

Design and ergonomic assessment of an infusion set connector tool used in nursing work.

Appl Ergon 2019 Feb 21;75:91-98. Epub 2018 Sep 21.

Department of Biomedical Systems & Medical Physics, Tehran University of Medical Sciences, Iran.

Nursing is a physically demanding job characterized by a high prevalence of fatigue and musculoskeletal disorders. One of the high-exertion and repetitive nursing tasks is the manual connection of an infusion set to a medical fluid bottle. Such physical work can be eased by the design of new hand tools. Read More

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February 2019

Occupational cranking operations: The scapula perspective.

Authors:
Jia-Hua Lin Xu Xu

Appl Ergon 2019 Feb 3;75:129-133. Epub 2018 Oct 3.

Edward P. Fitts Department of Industrial and Systems Engineering, North Carolina State University, Raleigh, NC, USA.

Cranking the landing gear is a common task performed by truck drivers to raise or lower trailers. This task poses a risk to the shoulder joint due to the required forceful exertion and the posture constrained to the hand-handle interface. As a potential occupational risk, there has been no definitive guideline for best practices among truck drivers. Read More

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February 2019

The lever arm ratio of the rotator cuff to deltoid muscle explains and predicts pseudoparalysis of the shoulder.

Bone Joint J 2018 Dec;100-B(12):1600-1608

Department of Orthopaedics, University of Zurich, Balgrist University Hospital, Zurich, Switzerland; Laboratory for Orthopaedic Biomechanics, ETH Zurich, Zurich, Switzerland.

Aims: In patients with a rotator cuff tear, tear pattern and tendon involvement are known risk factors for the development of pseudoparalysis of the shoulder. It remains unclear, however, why similar tears often have very different functional consequences. The present study hypothesizes that individual shoulder anatomy, specifically the moment arms (MAs) of the rotator cuff (RC) and the deltoid muscle, as well as their relative recruitment during shoulder abduction, plays a central role in pseudoparalysis. Read More

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December 2018
1 Read

Post-operative nerve injuries after cervical spine surgery.

Int Orthop 2018 Nov 29. Epub 2018 Nov 29.

Department of Orthopaedic Surgery, Columbia University, New York, NY, USA.

Although relatively rare, post-operative nerve injuries may occur after cervical spine procedures. The most common post-operative neural disorder is C5 nerve palsy. The risk factors for C5 nerve palsy are male gender, OPLL, and posterior cervical approaches. Read More

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November 2018
3 Reads

Adding deltoid ligament repair in ankle fracture treatment: Is it necessary? A systematic review.

Foot Ankle Surg 2018 Nov 15. Epub 2018 Nov 15.

Department of Orthopaedic Surgery & Rehabilitation, Texas Tech University Health Sciences Center - El Paso, 4801 Alberta Avenue, El Paso, TX, 79905 United States.

Background: Deltoid ligament injuries are typically caused by supination-external rotation or pronation injury. Numerous ligament reconstruction techniques have been proposed; however, clear indications for operative repair have not yet been well established in the literature.

Methods: We reviewed primary research articles comparing ORIF treatment for ankle fracture with versus without deltoid ligament repair. Read More

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November 2018
1 Read

10-Year Epidemiology of Ankle Injuries in Men's and Women's Collegiate Basketball.

Orthop J Sports Med 2018 Nov 5;6(11):2325967118805400. Epub 2018 Nov 5.

Department of Orthopedic Surgery, Mayo Clinic, Phoenix, Arizona, USA.

Background: Ankle injury is the most common injury in men's and women's basketball, regardless of the level of competition.

Purpose: To use the National Collegiate Athletic Association (NCAA) Injury Surveillance Program/System (ISP/ISS) to review the 10-year epidemiology of ankle injuries in men's and women's collegiate basketball players.

Study Design: Descriptive epidemiology study. Read More

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November 2018
2 Reads

Chronic deltoid ligament insufficiency repair with Internal Brace™ augmentation.

Foot Ankle Surg 2018 Nov 5. Epub 2018 Nov 5.

Department of Orthopaedic Surgery, Hospital Clinico Universidad de Chile, Clinica Universidad de Los Andes, Santos Dumont 999, Independencia, Santiago, 7640275, Chile. Electronic address:

Background: Patients with chronic deltoid ligament insufficiency (CDLI) present a challenging situation. Although numerous procedures have been described, optimal treatment is still a matter of debate. While the treatment armamentarium ranges from simple ligament repair to complex reconstructions with or without realignment osteotomies, direct repair augmented with an Internal Brace™ device appears to be an attractive intermediate option. Read More

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November 2018
1 Read

Locked Plate Fixation of Proximal Humeral Fractures Through an Extended Deltoid Split Approach with Use of a Shoulder Strap Incision.

JBJS Essent Surg Tech 2015 Sep 9;5(3):e17. Epub 2015 Sep 9.

Department of Orthopaedic Traumatology, Parvathy Hospital, 63A/44, Gandhi Road, Choolaimedu, Chennai 600094, India. E-mail address for A.S. Gavaskar:

Introduction: The shoulder strap approach involves an anterolateral deltoid split with use of an inverted U incision, providing excellent lateral exposure for locked plate fixation of complex proximal humeral fractures.

Step 1 Positioning Of The Patient And The Image Intensifier: Proper positioning of the image intensifier is important for uninterrupted fluoroscopy.

Step 2 Skin Incision: The tip of the acromion is a useful landmark and serves as the proximal extent of the incision. Read More

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September 2015

Deltoid Ligament Rupture in Ankle Fracture: Diagnosis and Management.

J Am Acad Orthop Surg 2018 Nov 20. Epub 2018 Nov 20.

From the Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL.

The last stage of a supination-external rotation ankle fracture involves either transverse fracture of the medial malleolus or rupture of the deltoid ligament. When the deltoid ligament ruptures, a "bimalleolar equivalent" ankle fracture occurs, and the surgeon is presented with several diagnostic and therapeutic challenges. In the native ankle, the deltoid ligament provides restraint to eversion and external rotation of the talus on the tibia. Read More

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November 2018
1 Read

A technique to identify the axillary nerve and its cutaneous branch for triceps nerve-to-deltoid nerve transfer. A case report.

Int J Surg Case Rep 2018 Nov 17;53:351-353. Epub 2018 Nov 17.

Department of Anesthesia, King Saud University Riyadh, Saudi Arabia. Electronic address:

Introduction: Triceps nerve-to-deltoid nerve transfer requires the identification of the axillary nerve in the quadrilateral space. This may be difficult especially for residents-in-training. The senior author is a Professor of Hand Surgery at a teaching institution and has devised a new technique of identification of the axillary nerve and its cutaneous branch using surface land-marks and on-table ultrasonography. Read More

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November 2018

Poorly differentiated plasmacytoid squamous cell carcinoma: Case report of a rare malignancy.

Am J Otolaryngol 2019 Jan - Feb;40(1):124-128. Epub 2018 Oct 23.

Case Western Reserve University School of Medicine, 10900 Euclid Avenue, Cleveland, OH 44106, USA; Department of Otolaryngology - Head & Neck Surgery, MetroHealth Medical Center, 2500 MetroHealth Drive, Cleveland, OH 44109, USA. Electronic address:

Plasmacytoid squamous cell carcinoma is an especially aggressive variant of squamous cell carcinoma that has previously been described in the literature as a variant of oral cancers and most extensively, in vulvular [3], transitional cell, and urothelial carcinomas [2,13,15-20]. In this case report, we present a 36-year-old man with 6 to 8 weeks of a progressively enlarging mass over the lateral third of his clavicle, acromion process, and deltoid. The mass was resected, and the supraclavicular defect was reconstructed using an anterolateral thigh free flap. Read More

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October 2018

Simultaneous acquisition of magnetic resonance elastography of the supraspinatus and the trapezius muscles.

Magn Reson Imaging 2018 Nov 19;57:95-102. Epub 2018 Nov 19.

System Emotional Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Sugitani 2630, Toyama 930-0194, Japan.

We developed a Magnetic Resonance elastography (MRE) technique using a conventional magnetic resonance imaging (MRI), which allows a simultaneous elastography of the supraspinatus and trapezius muscles, by designing a new wave transducer (vibration pad) and optimizing the mechanical vibration frequency. Five healthy volunteers underwent an MRE. In order to transmit the mechanical vibration (pneumatic vibration) to the supraspinatus and trapezius muscles, a new vibration pad was designed using a three-dimensional (3D) printer. Read More

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November 2018

Effects of using a document holder when typing on head excursion and neck muscle activity among computer users with and without neck pain.

Int J Occup Saf Ergon 2018 Nov 22:1-22. Epub 2018 Nov 22.

b Physiotherapy Program, Centre for Rehabilitation and Special Needs, Faculty of Health Sciences , Universiti Kebangsaan Malaysia , Malaysia.

Purpose: The aim of this study was to examine the effects of document holder while typing on head excursion and neck muscle activity among computer users with and without neck pain.

Method: An experimental study with a total of 52 individuals with (n = 26) and without (n = 26) neck pain were conducted. Head excursion and neck muscle activity were measured using accelerometer and surface electromyography (EMG) respectively. Read More

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November 2018
5 Reads

Decremental Responses to Repetitive Nerve Stimulation in Amyotrophic Lateral Sclerosis.

Eur Neurol 2018 Nov 21;80(3-4):151-156. Epub 2018 Nov 21.

Department of Neurology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an,

Introduction: To illuminate the mechanism of neuromuscular junction involvement by analyzing the features of a slow-rate repetitive nerve simulation (RNS) and EMG in amyotrophic lateral sclerosis (ALS) patients.

Methods: We retrospectively analyzed relationship between clinical features and the decremental response in RNS in 184 sporadic ALS patients.

Results: (1) 44. Read More

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November 2018
1 Read

Muscular activity patterns of female and male athletes during the flat bench press.

Biol Sport 2018 Jun 30;35(2):175-179. Epub 2018 Jan 30.

The Jerzy Kukuczka Academy of Physical Education in Katowice, Dept. of Sports Training, Poland.

The bench press (BP) is a complex upper body exercise in which substantial external loads can be used, demanding high neuromuscular activity. The aim of this study was to compare electromyographic (EMG) activity between female and male athletes during the flat bench press. Five male and five female athletes participated in this study. Read More

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June 2018
1 Read

Whole exome sequencing identified a novel DAG1 mutation in a patient with rare, mild and late age of onset muscular dystrophy-dystroglycanopathy.

J Cell Mol Med 2018 Nov 18. Epub 2018 Nov 18.

Department of Cell Biology and Medical Genetics, School of Medicine, Zhejiang University, Hangzhou, China.

Muscular dystrophy-dystroglycanopathy (limb-girdle), type C, 9 (MDDGC9) is the rarest type of autosomal recessive muscular dystrophies. MDDGC9 is manifested with an early onset in childhood. Patients with MDDGC9 usually identified with defective glycosylation of DAG1, hence it is known as "dystroglycanopathies". Read More

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November 2018
2 Reads

The Honest Palm Sign: Detecting Incomplete Effort on Physical Exam.

World Neurosurg 2018 Nov 15. Epub 2018 Nov 15.

Department of Neurosurgery; Penn State Milton S Hershey Medical Center; 500 University Drive; Hershey, Pennsylvania 17033. Electronic address:

Objective: We investigated a simple, novel diagnostic test for detecting incomplete effort during the motor portion of the neurologic examination.

Methods: The Honest Palm Sign (HPS) was evaluated in 162 consecutive neuro-oncology patients undergoing upper extremity strength testing. Deltoid, bicep, and wrist extensor strength were assessed in all patients. Read More

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November 2018
2 Reads

Ankle Fracture Fixation: Medial or Lateral First?

J Foot Ankle Surg 2018 Nov 15. Epub 2018 Nov 15.

Medical Student, Department of Orthopedic Surgery, Doctors Hospital, Columbus, OH.

In unstable ankle fractures, the importance of reducing the lateral malleolus first to obtain an anatomic reduction of the talus is well established. Although this is a time-tested and common surgical approach, current surgical practice does not always follow the established dogma. Medial-first fixation may be a worthwhile alternative to lateral-first fixation in select instances. Read More

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November 2018
5 Reads

C5 pure motor spinal cord injury: A case with a rare manifestation of cervical spinal cord injury.

J Clin Neurosci 2018 Nov 15. Epub 2018 Nov 15.

University of Tsukuba, Japan. Electronic address:

We report an extremely rare case showing a fifth cervical spine (C5) level pure motor cervical spinal cord injury (SCI). A 55-year-old-man lost consciousness and fell into a bathtub. Immediately after regaining consciousness, the patient had right arm drop alone. Read More

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November 2018

Effect Of Arm Deweighting Using End-Effector Based Robotic Devices On Muscle Activity.

Conf Proc IEEE Eng Med Biol Soc 2018 Jul;2018:2470-2474

Deweighting of the limb is commonly performed for patients with a neurological injury, such as stroke, as it allows these patients with limited muscle activity to perform movements. Deweighting has been implemented in exoskeletons and other multi-contact devices, but not on an end-effector based device with single contact point between the assisting robot and the human limb being assisted. This study inves-tigates the effects of deweighting using an end-effector based device on healthy subjects. Read More

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July 2018
1 Read

Cadaveric Dissection of the Axillary Nerve: An Investigation of Extra-Muscular and Intra-Muscular Branching Patterns.

J Hand Surg Asian Pac Vol 2018 Dec;23(4):533-538

1 Department of Hand Surgery and Peripheral Nerve Surgery, Royal North Shore Hospital (Northern Sydney Local Health District), University of Sydney, Sydney, Australia.

Background: Variations in the axillary nerve branching patterns have been reported. The aim of the study is to investigate the extra- and intra-muscular course of the axillary nerve and quantify the regional innervation of the deltoid.

Methods: In fresh frozen specimens, the origin of the axillary nerve from the posterior cord of the brachial plexus and its extra- and intra-muscular course were identified. Read More

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December 2018
6 Reads

For how long do denervated muscles in children retain the ability to regenerate?: Restoration of elbow flexion and shoulder function by partial nerve transfer in a child with long-standing poliomyelitis-like paralysis.

J Orthop Sci 2018 Nov 10. Epub 2018 Nov 10.

Department of Orthopedic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba-shi, Ibaraki Prefecture 305-8575, Japan.

Background: In infant poliomyelitis or poliomyelitis-like paresis, there has been no means of treating residual paralysis and the policy has been to wait until an affected infant has grown sufficiently to enable tendon transfer or arthrodesis. However, recent reports have described relatively good results for early surgical intervention in the form of nerve transfer.

Methods: In a 4-year and 6-month-old child we transferred a partial ulnar nerve for elbow flexor reconstruction even 3 years and 10 months after the onset of poliomyelitis-like palsy and also transferred partial accessory and radial nerves for shoulder function restoration 6 months after the first operation. Read More

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November 2018
1 Read

Long-term follow-up after MIPO Philos plating for proximal humerus fractures.

Arch Orthop Trauma Surg 2018 Nov 12. Epub 2018 Nov 12.

Department of Trauma Surgery, Kantonsspital Graubünden, Loëstrasse 170, 7000, Chur, Switzerland.

Introduction: Minimally invasive plate osteosynthesis (MIPO) has been described as a suitable technique for the treatment of proximal humerus fractures, but long-term functional results have never been reported. The aim of this study was to describe the long-term functional outcome and implant-related irritation after MIPO for proximal humerus fractures.

Methods: A long-term prospective cohort analysis was performed on all patients treated for a proximal humerus fracture using MIPO with a Philos plate (Synthes, Switzerland) between December 2007 and October 2010. Read More

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November 2018
2 Reads

Effects of mixed reality head-mounted glasses during 90 minutes of mental and manual tasks on cognitive and physiological functions.

PeerJ 2018 6;6:e5847. Epub 2018 Nov 6.

Centre d'Expertise de la Performance, U1093 INSERM, Université de Bourgogne, Dijon, France.

Background: We evaluated the effects of a mixed reality (MR) head-mounted deviceon some cognitiveand physiological functions during 90 min tasks in an attempt to determine their safety for workers.

Methods: A total of 12 volunteers performed 90-min intellectual and manual tasks with and without MR glasses. Balance, Stroop, and memory tests were conducted before, during and after these tasks. Read More

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November 2018
1 Read

Spring Ligament Instability.

Foot Ankle Clin 2018 Dec 22;23(4):659-678. Epub 2018 Sep 22.

Department of Orthopedic Surgery, Universidad de Chile, 1027 Independencia, Santiago 8380453, Chile; Department of Orthopedic Surgery, Hospital Clinico Universidad de Chile, Santos Dumont 999, Independencia, Santiago 8380456, Chile; Clinica Universidad de los Andes, Plaza 2501, Santiago 7620157, Chile.

The crucial role of the spring ligament complex within the pathologic process that leads to flatfoot deformity has evolved recently. There has been improvement in the anatomic knowledge of the spring ligament and understanding of its complex relationship to the deltoid complex and outstanding advances in biomechanics concepts related to the spring ligament. Optimization of flatfoot treatment strategies are focused on a renewed interest in the spring ligament and medial soft tissue reconstruction in concert with bony correction to obtain an adequate reduction of the talonavicular deformity and restoration of the medial longitudinal arch. Read More

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December 2018

Medial Ankle Instability: The Deltoid Dilemma.

Foot Ankle Clin 2018 Dec 25;23(4):639-657. Epub 2018 Sep 25.

Orthopaedic Department, Swiss Ortho Center, Swiss Medical Network, Schmerzklinik Basel, Hirschgässlein 15, Basel 4010, Switzerland. Electronic address:

Diagnosis and treatment of medial ankle instability (MAI) are still controversial and poorly discussed in literature. The purpose of this review is to highlight different clinical presentations of MAI and develop a guide for its management. The deltoid ligament complex is injured more commonly than expected, because deltoid ligament injuries may either be isolated or occur in combination with other lesions, such as lateral ankle ligament injury, posterior tibial tendon insufficiency, osteochondral lesion, and others. Read More

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December 2018
3 Reads

Imaging in Foot and Ankle Instability.

Foot Ankle Clin 2018 Dec;23(4):499-522.e28

Department of Radiology, St Paul's Hospital, University of British Columbia, 1081 Burrard Street, Vancouver, British Columbia V6Z 1Y6, Canada.

This article reviews the imaging aspects relevant to ligamentous instabilities of the foot and ankle with a focus on MRI and ultrasound imaging. A pictorial review of the anatomy of the medial and lateral ankle ligaments, syndesmosis, spring ligament, Lisfranc complex, hallux sesamoid complex, and lesser toe plantar plate as seen on MRI is presented. Selected cases of ligamentous pathology relevant to foot and ankle instability are presented. Read More

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December 2018

Effects of kinesiology taping on shoulder girdle muscle activity and sports performance during badminton forehand overhead strokes in amateur badminton players with shoulder impingement syndrome.

J Sports Med Phys Fitness 2018 Oct 31. Epub 2018 Oct 31.

Department of Health and Physical Education, The Education University of Hong Kong, Hong Kong, China.

Background: This study aimed to examine the influence of kinesiology taping (KT), various overhead stroke techniques, and their interactions on shoulder girdle muscle activity and on sports performance in badminton players with shoulder impingement syndrome.

Methods: Twenty-five amateur badminton players with shoulder impingement syndrome participated in the study. Each was exposed to two KT conditions (no taping and taping) while performing four badminton strokes (defensive clear, attacking clear, smash, and drop shot) in a random order. Read More

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October 2018
7 Reads

The moment arms of the muscles spanning the glenohumeral joint: a systematic review.

J Anat 2018 Nov 8. Epub 2018 Nov 8.

Department of Biomedical Engineering, University of Melbourne, Parkville, VIC, Australia.

The moment arm of a muscle represents its leverage or torque-producing capacity, and is indicative of the role of the muscle in joint actuation. The objective of this study was to undertake a systematic review of the moment arms of the major muscles spanning the glenohumeral joint during abduction, flexion and axial rotation. Moment arm data for the deltoid, pectoralis major, latissimus dorsi, teres major, supraspinatus, infraspinatus, subscapularis and teres minor were reported when measured using the geometric and tendon excursion methods. Read More

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November 2018
5 Reads

Surgical and Functional Outcome after Endoprosthetic Reconstruction in Patients with Osteosarcoma of the Humerus.

Sci Rep 2018 Nov 8;8(1):16148. Epub 2018 Nov 8.

Department of Orthopaedic Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria.

Endoprosthetic reconstruction (EPR) is the most widely used reconstruction technique after humeral osteosarcoma (OSA). Complications are common and function is often compromised due to the premise of wide resection. In the current study we evaluated (1) the risk of complications after resection and EPR; (2) the functional outcome and how it is influenced by the preservation/resection of deltoid muscle (DM), rotator cuff (RC), axillary nerve or the type of resection (intra-/extraarticular) and (3) if the preservation/resection of DM, RC, axillary nerve or the type of resection has a negative influence on the oncological outcome. Read More

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November 2018
4 Reads

FAM92A Underlies Nonsyndromic Postaxial Polydactyly in Humans and an Abnormal Limb and Digit Skeletal Phenotype in Mice.

J Bone Miner Res 2018 Nov 5. Epub 2018 Nov 5.

Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.

Polydactyly is a common congenital anomaly of the hand and foot. Postaxial polydactyly (PAP) is characterized by one or more posterior or postaxial digits. In a Pakistani family with autosomal recessive nonsyndromic postaxial polydactyly type A (PAPA), we performed genomewide genotyping, linkage analysis, and exome and Sanger sequencing. Read More

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November 2018
11 Reads

[Deltoid ligament augmentation and repairing in ankle fracture associated with deltoid ligament injury and syndesmosis diastasis].

Zhonghua Yi Xue Za Zhi 2018 Oct;98(39):3192-3196

To evaluate the outcome of the deep component augmentation and superficial component repairing and syndesmosis screw fixation in treating ankle fracture associated with deltoid ligament injury and syndesmosis diastasis. From January 2014 to December 2017, 16 patients with ankle fracture combined with deltoid ligament injury and syndesmosis diastasis were treated with the deep component augmentation and superficial component repairing in Beijing Jishuitan Hospital.Of the patients, 13 were males and 3 were females, with an average age of (38±10) years (21-57 years). Read More

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October 2018
7 Reads

Coordinated activities of trunk and upper extremity muscles during walker-assisted paraplegic gait: A synergy study.

Hum Mov Sci 2018 Dec 30;62:184-193. Epub 2018 Oct 30.

Mechanical Engineering Department, Sharif University of Technology, Tehran, Iran. Electronic address:

Individuals with spinal cord injury (SCI) at lower thoracic levels might walk independently with the aid of mechanical orthoses and walker by using their unimpaired trunk and upper extremity muscles (TUEM). The required motor skills and the associated subtasks of the paraplegic locomotion, however, have not been well understood yet. The purpose of this study was to investigate the coordination of the TUEM activities throughout the paraplegic gait cycle using synergy analysis. Read More

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December 2018
6 Reads

The presence of a rotator cuff tear interferes with age-dependent muscle atrophy of intact shoulder muscles. An MRI study with 3 years' follow-up.

Hum Mov Sci 2018 Dec 26;62:161-168. Epub 2018 Oct 26.

Department of Orthopaedics, Leiden University Medical Center, the Netherlands. Electronic address:

Rotator cuff muscle atrophy is frequently studied, but it is unknown whether redistribution of mechanical load in the presence of a rotator cuff tear influence muscle atrophy that is observed in patients. We hypothesized that in the presence of a supraspinatus tear, redistribution of mechanical load towards teres minor and deltoid slows down atrophy of these muscles over time. In this retrospective observational study of 129 patients, we measured the cross-sectional surface-areas on MRI of shoulder muscles in an intact rotator cuff (n = 92) and in a supraspinatus-tear group (n = 37) with a mean follow-up of 3 ± 1. Read More

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December 2018

Generation and characterization of pathogenic Mab21l2(R51C) mouse model.

Genesis 2018 Oct 30:e23261. Epub 2018 Oct 30.

Division of Life Science, The Hong Kong University of Science and Technology, Kowloon, Hong Kong.

MAB21L2(R51C) is one of the five documented MAB21L2 mutations in human patients with bilateral eye malformations identified via whole exome sequencing. In addition to the eye abnormality, patients with MAB21L2 mutation also have skeletal dysplasia and intellectual disability. To evaluate the pathology of this mutant allele systematically in understanding the functional role of MAB21L2 in human development, we introduce the R51C mutation into the mouse genome by CRISPR/Cas9 system to generate a mouse model for detailed characterization. Read More

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October 2018
4 Reads

The arthroscopic syndesmotic assessment tool can differentiate between stable and unstable ankle syndesmoses.

Knee Surg Sports Traumatol Arthrosc 2018 Oct 26. Epub 2018 Oct 26.

Division of Foot & Ankle Surgery, Department of Orthopaedic Surgery, Massachusetts General Hospital, Newton-Wellesley Hospital, Harvard Medical School, Boston, USA.

Purpose: Patients with stable isolated injuries of the ankle syndesmosis can be treated conservatively, while unstable injuries require surgical stabilisation. Although evaluating syndesmotic injuries using ankle arthroscopy is becoming more popular, differentiating between stable and unstable syndesmoses remains a topic of on-going debate in the current literature. The purpose of this study was to quantify the degree of displacement of the ankle syndesmosis using arthroscopic measurements. Read More

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October 2018
3 Reads

Comparison of three plain radiography methods for evaluating proximal humerus bone strength in women.

J Orthop Sci 2018 Oct 23. Epub 2018 Oct 23.

Department of Orthopedic Surgery, Surgical Science, Tokai University School of Medicine, Kanagawa, Japan.

Background: We assessed the correlation between three methods for measuring cortical thickness of the humerus on a plain radiograph and bone mineral density measured by dual-energy X-ray absorptiometry in order to establish a simple bone strength evaluation method in patients at risk of proximal humerus fragility fracture.

Methods: In this retrospective study, 1732 patients underwent screening of the distal third radius, proximal femur, and lumbar spine by dual-energy X-ray absorptiometry. We identified 224 patients who also underwent anteroposterior shoulder radiography. Read More

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October 2018
8 Reads

Ergonomic analysis of laparoscopic and robotic surgical task performance at various experience levels.

Surg Endosc 2018 Oct 22. Epub 2018 Oct 22.

Washington University in Saint Louis, St. Louis, MO, USA.

Introduction: Traditional laparoscopic surgery (TLS) has increasingly been associated with physical muscle strain for the operating surgeon. Robot-assisted laparoscopic surgery (RALS) may offer improved ergonomics. Ergonomics for the surgeon on these two platforms can be compared using surface electromyography (sEMG) to measure muscle activation, and the National Aeronautics and Space Administration Task Load Index (NTLX) survey to assess workload subjectively. Read More

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October 2018
4 Reads
3.260 Impact Factor

Median nerve stimulation induces analgesia via orexin-initiated endocannabinoid disinhibition in the periaqueductal gray.

Proc Natl Acad Sci U S A 2018 Nov 22;115(45):E10720-E10729. Epub 2018 Oct 22.

Graduate Institute of Acupuncture Science, China Medical University, Taichung, Taiwan 40402;

Adequate pain management remains an unmet medical need. We previously revealed an opioid-independent analgesic mechanism mediated by orexin 1 receptor (OX1R)-initiated 2-arachidonoylglycerol (2-AG) signaling in the ventrolateral periaqueductal gray (vlPAG). Here, we found that low-frequency median nerve stimulation (MNS) through acupuncture needles at the PC6 (Neiguan) acupoint (MNS-PC6) induced an antinociceptive effect that engaged this mechanism. Read More

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November 2018
14 Reads

Rhabdomyolysis of Unknown Etiology - Initial Suspicion and Detection on 99mTc-MDP Skeletal Scintigraphy.

J Assoc Physicians India 2018 Jan;66(1):84

Department of Medicine, Vijaya Diagnostic Centre, Visakhapatnam, Andhra Pradesh.

The classical bone scan findings of Rhabdomyolysis is presented in this illustration. A 60 year old female patient with complaints of low backache and bilateral lower limbs weakness over 1 year was referred for whole body skeletal status evaluation. Whole body skeletal scintigraphy undertaken 3 hrs after I. Read More

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January 2018
4 Reads

Transcranial direct current stimulation (tDCS) over right temporoparietal junction (rTPJ) for social cognition and social skills in adults with autism spectrum disorder (ASD).

J Neural Transm (Vienna) 2018 Dec 19;125(12):1857-1866. Epub 2018 Oct 19.

Department of Psychology, University of New Mexico, MSC03 2220 1 University of New Mexico, Albuquerque, NM, 87131, USA.

Social deficits are core to autism spectrum disorder (ASD). Current treatments are extremely time- and labor-intensive. Transcranial direct current stimulation (tDCS) may be a promising treatment modality to safely enhance treatments targeting social cognition and social skills. Read More

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December 2018
5 Reads

Ergonomics of minimally invasive surgery: an analysis of muscle effort and fatigue in the operating room between laparoscopic and robotic surgery.

Surg Endosc 2018 Oct 19. Epub 2018 Oct 19.

Center for Advanced Surgical Technology, University of Nebraska Medical Center, 986246 Nebraska Medical Center, Omaha, NE, 68198-6246, USA.

Background: Our aim was to determine how objectively-measured and self-reported muscle effort and fatigue of the upper-limb differ between surgeons performing laparoscopic (LAP) and robotic-assisted (ROBOT) surgeries.

Methods: Surgeons performing LAP or ROBOT procedures at a single-institution were enrolled. Objective muscle activation and self-reported fatigue were evaluated, and comparisons were made between approaches. Read More

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October 2018
1 Read

The influence of rotator cuff tears on muscle and joint-contact loading after reverse total shoulder arthroplasty.

J Orthop Res 2018 Oct 16. Epub 2018 Oct 16.

Department of Biomedical Engineering, University of Melbourne, Victoria, Australia.

Rotator cuff tears are known to affect clinical outcome of reverse total shoulder arthroplasty (RSA). This study aimed to use computational modelling to quantify the effect of rotator cuff tear severity on muscle and joint forces after RSA, as well as stresses at the glenosphere, base-plate, fixation screws, scapula, and humeral components. A multi-body musculoskeletal model of the glenohumeral joint was developed comprising the scapula, humerus and nine major upper limb muscles. Read More

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October 2018
3 Reads

Inferior shoulder dislocation after shortening osteotomy of the humerus. A case report.

Trauma Case Rep 2018 Oct 26;17:9-13. Epub 2018 Sep 26.

Departament of Orthopedic Surgery, Medical University of Gdańsk, Poland.

We present a case of a post-surgical complete dislocation after excessive proximal humeral shortening osteotomy performed in a patient operated on for atrophic non-union of a proximal humeral fracture. This complication has not been previously reported. The dislocation occurred due to extensive laxity of the soft tissue envelope, predominantly the deltoid muscle, as well as rotator cuff tear. Read More

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October 2018
2 Reads

Nerve Transfers for Enterovirus D68-Associated Acute Flaccid Myelitis: A Case Series.

Pediatr Neurol 2018 Nov 20;88:25-30. Epub 2018 Aug 20.

Center for Brachial Plexus and Traumatic Nerve Injury, Hospital for Special Surgery, New York, New York; Weill Medical College of Cornell University, New York, New York; New York-Presbyterian Hospital, New York, New York. Electronic address:

Background: Acute flaccid myelitis is associated with enterovirus D68 -induced inflammation and destruction of cervical anterior horn cells. To date, no medical intervention has altered the disease course.

Methods: We report two pediatric patients who were treated with nerve transfer in three limbs with sustained upper extremity neuropathy. Read More

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November 2018
4 Reads

Pimping inhibition: Anodal tDCS enhances stop-signal reaction time.

J Exp Psychol Hum Percept Perform 2018 Dec 8;44(12):1933-1945. Epub 2018 Oct 8.

Department of Cognitive Psychology.

The stop-signal task (SST) is assumed to reliably measure response inhibition; specifically, in this task participants sometimes have to withhold a response according to the onset of a sudden cue. The response-stopping process is estimated by a stochastic model that delivers the stop-signal reaction time (SSRT; Verbruggen & Logan, 2009), that is, the latency to inhibit prepotent responses. The right dorsolateral prefrontal cortex (rDLPFC) plays a key role in goal directed cognitive control in general and particularly an increased activation has been associated with better SST performance (that is with shorter SSRT). Read More

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December 2018
1 Read