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https://www.readbyqxmd.com/read/28227917/evaluation-of-shoulder-joint-kinematics-and-muscle-activity-during-geared-and-standard-manual-wheelchair-mobility
#1
Omid Jahanian, Alyssa J Schnorenberg, Brooke A Slavens, Omid Jahanian, Alyssa J Schnorenberg, Brooke A Slavens, Brooke A Slavens, Alyssa J Schnorenberg, Omid Jahanian
Manual wheelchairs often lead to reduced independent function and an increase in shoulder pain and injuries. Geared manual wheelchairs may be a promising alternative that reduces the biomechanical demands of the shoulder needed for tasks such as propulsion on ramps and carpeted floors, while maximizing function and participation. To investigate the effects of geared manual wheelchair mobility during demanding tasks such as ramp ascent, six able-bodied subjects were evaluated in this study. Subjects were asked to propel both standard and geared manual wheelchairs on a tiled level floor and on a wheelchair ADA ramp...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227890/in-vitro-identification-of-shoulder-joint-and-muscle-dynamics-based-on-motion-capture-and-musculoskeletal-computation
#2
Akihiko Murai, Yusuke Kawano, Ko Ayusawa, Mitsunori Tada, Noboru Matsumura, Takeo Nagura, Akihiko Murai, Yusuke Kawano, Ko Ayusawa, Mitsunori Tada, Noboru Matsumura, Takeo Nagura
Dynamics properties of shoulder joint and muscle are experimentally identified under different musculoskeletal conditions for a digital human model with accurate dynamics. Passive swing motions of scapula and upper limb bones in cadaveric specimen with and without muscles are measured by an optical motion capture system. External forces that are applied to the scapula bone are simultaneously measured by a force plate. The dynamics identification process consists of 3 steps: 1) identify the inertial parameters of the cadaveric specimen with and without muscles respectively, 2) identify the viscosity of the glenohumeral joint from the specimen without muscles, and 3) identify the viscosity of the shoulder muscles from the specimen with muscles and the identified joint viscosity...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28224066/the-use-of-accessory-portals-in-bankart-repair-with-posterior-extension-in-the-lateral-decubitus-position
#3
Gregory L Cvetanovich, Jason T Hamamoto, Kevin J Campbell, Mark McCarthy, John D Higgins, Nikhil N Verma
The Bankart lesion, in which the anteroinferior labrum is detached from the glenoid, is the critical anatomic lesion in the majority of patients with anterior glenohumeral instability. Some patients with anterior glenohumeral instability will have Bankart lesions with posterior extension beyond the 6-o'clock position, and achieving anatomic labral repair in these cases can present a technical challenge. In our experience, the lateral decubitus position and use of accessory portals allow superior visualization of the inferior half of the glenohumeral joint for glenoid and labral preparation, anchor placement, and suture management...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28217660/reverse-total-shoulder-arthroplasty-research-models
#4
Stefano Petrillo, Umile Giuseppe Longo, Lawrence V Gulotta, Alessandra Berton, Andreas Kontaxis, Timothy Wright, Vincenzo Denaro
PURPOSE: the past decade has seen a considerable increase in the use of research models to study reverse total shoulder arthroplasty (RTSA). Nevertheless, none of these models has been shown to completely reflect real in vivo conditions. METHODS: we performed a systematic review of the literature matching the following key words: "reverse total shoulder arthroplasty" or "reverse total shoulder replacement" or "reverse total shoulder prosthesis" and "research models" or "biomechanical models" or "physical simulators" or "virtual simulators"...
October 2016: Joints
https://www.readbyqxmd.com/read/28217426/treatment-of-anterior-shoulder-subluxation-using-the-mulligan-concept-and-reflex-neuromuscular-stabilization-a-case-report
#5
Robinetta A Hudson, Russell T Baker, Alan Nasypany, Don Reordan
BACKGROUND AND PURPOSE: Shoulder instability, a common issue among athletes who engage in contact sports, may lead to recurrent subluxations, or partial dislocations of the shoulder. Young athletic patients generally respond poorly to the nonsurgical treatments for shoulder instability that are commonly utilized. The purpose of this case report is to describe the effects of the treatment guided by the Mulligan Concept (MC) coupled with reflex neuromuscular stabilization (RNS) also known as reactive neuromuscular training (RNT), on an adolescent football player with glenohumeral joint (GHJ) instability who sustained a traumatic anterior subluxation...
February 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28215115/correlation-between-anatomy-of-the-scapula-and-the-incidence-of-rotator-cuff-tear-and-glenohumeral-osteoarthritis-via-radiological-study
#6
Mohd Fairudz Bin Mohd Miswan, Mohd Shahril Bin Ahmad Saman, Teo Seow Hui, Mohamed Zubair Mohamed Al-Fayyadh, Mohamed Razif Bin Mohamed Ali, Ng Wuey Min
INTRODUCTION: We conducted a study to elucidate the correlation between the anatomy of the shoulder joint with the development of rotator cuff tear (RCT) and glenohumeral osteoarthritis (GHOA) by using acromioglenoid angle (AGA). MATERIALS AND METHODS: The AGA is a new measured angle formed between the line from midglenoid to lateral end of the acromion with the line parallel to the glenoid surface. The AGA was measured in a group of 85 shoulders with RCT, 49 with GHOA and 103 non-RCT/GHOA control shoulders...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28214173/pyrocarbon-interposition-shoulder-arthroplasty-preliminary-results-from-a-prospective-multicenter-study-at-2-years-of-follow-up
#7
Jérôme Garret, Arnaud Godeneche, Pascal Boileau, Daniel Molé, Mikael Etzner, Luc Favard, Christophe Levigne, François Sirveaux, Marc-Olivier Gauci, Charles Dezaly, Gilles Walch
BACKGROUND: The concept of free interposition arthroplasty proved successful for small joints of the hand, wrist, and foot, particularly after the use of implants coated with pyrocarbon, which enhanced their tribologic and elastic properties. The present study reports preliminary outcomes of a pyrocarbon-coated interposition shoulder arthroplasty (PISA) implant. METHODS: This was a prospective study of 67 consecutive patients who underwent shoulder PISA at 9 centers...
February 14, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28212263/shoulder-synovial-fluid-lipoprotein-levels-and-their-relationship-to-the-rotator-cuff
#8
Daniel E Davis, Alexa Narzikul, Daniel Sholder, Mark Lazarus, Surena Namdari, Joseph Abboud
INTRODUCTION: Rotator cuff pathology has been proposed to occur through intrinsic and extrinsic mechanisms. Hyperlipidemia has been proposed as a mechanism of intrinsic rotator cuff pathology. This prospective observational study evaluates serum and synovial lipid profiles in patients with and without rotator cuff tears to further define the relationship of cholesterol and rotator cuff pathology. METHODS: Patients were prospectively enrolled with intact rotator cuff (37 patients) and rotator cuff tear requiring a repair (40 patients) groups...
March 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28198605/the-effect-of-gymnastic-training-on-muscle-strength-and-co-activation-during-isometric-elbow-and-glenohumeral-flexion-extension
#9
Andrzej Kochanowicz, Bartłomiej Niespodziński, Jan Mieszkowski, Kazimierz Kochanowicz, Stanisław Sawczyn
BACKGROUND: The purpose of the study was to demonstrate the differences between non- athletes and gymnasts at the pre- and post-pubertal age in the development of peak torque and ensuing flexion/extension ratios at the elbow and the glenohumeral joints, as well as to assess the relevance of the above activities for the co-activation of selected muscles. METHODS: The study involved 20 gymnasts and 20 non-athletes aged 8-9 years, in addition to 12 gymnasts and 16 non-athletes aged 18-25 years...
February 14, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28190569/analyzing-on-the-location-of-the-bicipital-groove-for-alignment-in-shoulder-arthroplasty-of-chinese
#10
Jian Zhou, Linlin Zhang, Ling Shen, Ming Zhu, Feng Zheng
BACKGROUND: Many anthropometric studies of the normal glenohumeral relationship have been performed for the implant design and to identify reference points for the correct placement of the prosthesis in glenohumeral joint replacement. However, whether those implantation marks, which adopted from European or American, can achieve the same precision to Eastern Asian, specifically Chinese is still unknown. MATERIALS AND METHODS: One hundred eighty healthy were scanned using CT...
February 9, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28174438/flexibility-of-internal-and-external-glenohumeral-rotation-of-junior-female-tennis-players-and-its-correlation-with-performance-ranking
#11
Ching-Cheng Chiang, Chih-Chia Hsu, Jinn-Yen Chiang, Weng-Cheng Chang, Jong-Chang Tsai
[Purpose] The purpose of this study was to compare the internal and external rotation of the dominant and nondominant shoulders of adolescent female tennis players. The correlation between the shoulder rotation range of motion and the player's ranking was also analyzed. [Subjects and Methods] Twenty-one female junior tennis players who were 13 to 18 years old participated in this study. A standard goniometer was used to measure the internal and external rotation of both glenohumeral joints. The difference in internal and external rotation was calculated as the glenohumeral rotation deficit...
December 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28164062/case-report-of-mimicry-between-synovial-hemangioma-and-synovial-chondromatosis-of-the-shoulder
#12
Justin Colanese, Akin Cil, Nkem Egekeze, Kamani Lankachandra, Suhel Kotwal
INTRODUCTION: Synovial hemangioma is a developmental hamartoma of vascular tissue within the synovium; no cases involving the shoulder girdle have been described in the literature. Synovial chondromatosis is a benign condition in which synovial cells undergo metaplasia into hyaline cartilage and is also thought to infrequently affect the shoulder region. CASE REPORT: A 44-year-old female presented with left shoulder pain of 7-year duration. Magnetic resonance image displayed a 2...
September 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28161491/shoulder-and-elbow-kinematics-during-the-mallet-score-in-obstetrical-brachial-plexus-palsy
#13
Olivier Herisson, Nathalie Maurel, Amadou Diop, Morgane Le Chatelier, Adeline Cambon-Binder, Franck Fitoussi
BACKGROUND: The physical signs of obstetrical brachial plexus palsy range from temporary upper-limb dysfunction to a lifelong impairment and deformity in one arm. The aim of this study was to analyze the kinematics of the upper limb and to evaluate the contribution of glenohumeral and scapulothoracic joints of obstetrical brachial plexus palsy children. METHODS: Six children participated in this study: 2 males and 4 females with a mean age of 11.7years. Three patients had a C5, C6 lesion and 3 had a C5, C6, C7 lesion...
January 15, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28145740/adaptive-alterations-in-shoulder-range-of-motion-and-strength-in-young-tennis-players
#14
Benoit Gillet, Mickaël Begon, Violaine Sevrez, Christian Berger-Vachon, Isabelle Rogowski
CONTEXT:  Playing tennis requires unilateral and intensive movement of the upper limb, which may lead to functional adaptations of the shoulder and an increased injury risk. Identifying which athletes will be future elite tennis players starts at 5 to 6 years of age. Therefore, highly skilled players practice intensively in their childhood. However, whether these functional changes occur during the prepubertal years has not been established. OBJECTIVES:  To assess changes in glenohumeral-joint-rotation range of motion and strength of the shoulder-complex muscles in prepubertal elite tennis players...
February 1, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28142344/thawing-frozen-shoulder-by-steroid-injection
#15
Narendran Pushpasekaran, Narender Kumar, R K Chopra, Diganta Borah, Sumit Arora
BACKGROUND: Frozen shoulder is not an uncommon disorder, and steroid injection into the glenohumeral (GH) joint is one of the most well-known approaches for the frozen shoulder. However, their results have been varied with beneficial effects or no additional advantage. With the understanding about the pathological changes taking place in frozen shoulder and the biomechanics involved, we wanted to evaluate the short- and long-term efficacy of steroid injection by a novel three-site (NTS) injection technique and compare it with the single-site injection (SSI)...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28140349/reliability-of-3d-upper-limb-motion-analysis-in-children-with-obstetric-brachial-plexus-palsy
#16
Judy Mahon, Ailish Malone, Damien Kiernan, Dara Meldrum
: Kinematics, measured by 3D upper limb motion analysis (3D-ULMA), can potentially increase understanding of movement patterns by quantifying individual joint contributions. Reliability in children with obstetric brachial plexus palsy (OBPP) has not been established. OBJECTIVE: This study aimed to determine between session reliability and measurement errors of 3D-ULMA using the acromion method (AM) in children with OBPP. APPROACH: Ten participants (mean 10 years, range 7-15 years, Narakas classification I-III) completed 3D-ULMA on two occasions, mean interval of 8...
January 31, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28135371/sleep-disturbance-and-anatomic-shoulder-arthroplasty
#17
Brent J Morris, Aaron D Sciascia, Cale A Jacobs, T Bradley Edwards
Sleep disturbance is commonly encountered in patients with glenohumeral joint arthritis and can be a factor that drives patients to consider surgery. The prevalence of sleep disturbance before or after anatomic total shoulder arthroplasty has not been reported. The authors identified 232 eligible patients in a prospective shoulder arthroplasty registry following total shoulder arthroplasty for primary glenohumeral joint arthritis with 2- to 5-year follow-up. Sleep disturbance secondary to the affected shoulder was characterized preoperatively and postoperatively as no sleep disturbance, frequent sleep disturbance, or nightly sleep disturbance...
January 30, 2017: Orthopedics
https://www.readbyqxmd.com/read/28132742/hill-sachs-lesion-classification-under-arthroscopic-findings
#18
Kazuhiro Shibayama, Hiroshi Iwaso
BACKGROUND: The Hill-Sachs lesion (HSL) plays a role in recurrent glenohumeral joint instability. Currently, there are no studies based on the form characteristics of HSL. The purposes of this study were to report the HSL form characteristics and to determine whether they are correlated with number of prior subluxations and dislocations. METHODS: The study enrolled 134 consecutive patients diagnosed with anterior shoulder instability during an arthroscopic procedure...
January 26, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28131687/clinical-and-structural-outcome-22-years-after-acromioplasty-without-tendon-repair-in-patients-with-subacromial-pain-and-cuff-tears
#19
Mats C Ranebo, Hanna C Björnsson Hallgren, Rolf Norlin, Lars E Adolfsson
BACKGROUND: Long-term results regarding tear progression, arthropathy, and clinical scores of unrepaired rotator cuff tears are largely unknown. This study investigated whether the condition of the glenohumeral joint and rotator cuff had deteriorated at a minimum of 20 years after an acromioplasty without cuff repair and assessed the clinical results. METHODS: A retrospective analysis was conducted of a consecutive series of patients treated between 1989 and 1993 with acromioplasty without cuff repair due to subacromial pain and cuff tear...
January 25, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28131679/effects-of-asymptomatic-rotator-cuff-pathology-on-in-vivo-shoulder-motion-and-clinical-outcomes
#20
Timothy G Baumer, Jack Dischler, Veronica Mende, Roger Zauel, Marnix van Holsbeeck, Daniel S Siegal, George Divine, Vasilios Moutzouros, Michael J Bey
BACKGROUND: The incidence of asymptomatic rotator cuff tears has been reported to range from 15% to 39%, but the influence of asymptomatic rotator cuff pathology on shoulder function is not well understood. This study assessed the effects of asymptomatic rotator cuff pathology on shoulder kinematics, strength, and patient-reported outcomes. METHODS: A clinical ultrasound examination was performed in 46 asymptomatic volunteers (age: 60.3 ± 7.5 years) with normal shoulder function to document the condition of their rotator cuff...
January 25, 2017: Journal of Shoulder and Elbow Surgery
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