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Tendon tears

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https://www.readbyqxmd.com/read/29338908/relationship-between-neuropathy-proximal-to-the-suprascapular-nerve-and-rotator-cuff-tear-in-a-rodent-model
#1
Yasuhito Sasaki, Nobuyasu Ochiai, Eiko Hashimoto, Yu Sasaki, Takeshi Yamaguchi, Takehiro Kijima, Koji Akimoto, Seiji Ohtori, Kazuhisa Takahashi
BACKGROUND: Rotator cuff tears are believed to coexist with cervical spine lesions. In cases of preexisting neuropathy, such as cervical spine lesions, fatty degeneration has likely already occurred due to the neuropathy. In these cases, rotator cuff tear is thought to occur easily because of preexisting extensive fatty degeneration and degeneration of the tendons due to neuropathy. This study aimed to evaluate the effects of paralysis due to neuropathy proximal to the suprascapular nerve on the supraspinatus and infraspinatus tendons using a rat model of brachial plexus paralysis...
January 12, 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29337716/management-of-biceps-tendon-pathology-from-the-glenoid-to-the-radial-tuberosity
#2
Rachel M Frank, Eric J Cotter, Eric J Strauss, Laith M Jazrawi, Anthony A Romeo
Management of proximal and distal biceps tendon pathology is evolving. The long head of the biceps tendon, if inflamed, may be a pain-producing structure. In appropriately indicated patients, a symptomatic long head of the biceps tendon can be surgically managed via tenotomy, tenodesis, and/or superior labrum anterior to posterior repair. In some patients, primary superior labrum anterior to posterior pathology can be managed via biceps tenodesis. Determining which procedure is most appropriate and which technique and implant are preferred for a given patient with biceps tendon pathology is controversial...
January 15, 2018: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/29337028/bipolar-pedicled-teres-major-transfer-for-irreparable-subscapularis-tendon-tears-an-anatomic-feasibility-study
#3
Thibault Lafosse, Malo Le Hanneur, Julia Lee, Bassem Elhassan
BACKGROUND: Subscapularis (SSC) tendon tears are a challenging problem because they can significantly alter shoulder mechanics and function. Tendon retraction and advanced fatty degeneration associated with a chronic tear may make it irreparable. Tendon transfers options for such tears are viable, but results in the setting of associated glenohumeral instability are inconsistent. With the potential to recreate the SSC line of pull, the teres major (TM) may be a viable option for transfer...
January 12, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29335832/lateral-trochanteric-pain-following-total-hip-arthroplasty-radiographic-assessment-of-altered-biomechanics-as-a-potential-aetiology
#4
Ali Abdulkarim, Cathy Keegan, Raazi Bajwa, Eoin Sheehan
INTRODUCTION: Lateral trochanteric pain (LTP) complicates up to 17% of cases of total hip arthroplasty (THA). Studies have refuted underlying trochanteric bursitis. Restoration of the femoral offset and reproduction of the natural femoral centre of rotation are important in successful arthroplasty. LTP is believed to be associated with their alteration. AIM: The aim of our study was to evaluate the effect of femoral offset and centre of rotation on the incidence of LTP post-THA...
January 15, 2018: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/29330711/boosting-tendon-repair-interplay-of-cells-growth-factors-and-scaffold-free-and-gel-based-carriers
#5
REVIEW
Zexing Yan, Heyong Yin, Michael Nerlich, Christian G Pfeifer, Denitsa Docheva
BACKGROUND: Tendons are dense connective tissues and critical components for the integrity and function of the musculoskeletal system. Tendons connect bone to muscle and transmit forces on which locomotion entirely depends. Due to trauma, overuse and age-related degeneration, many people suffer from acute or chronic tendon injuries. Owing to their hypovascularity and hypocellularity, tendinopathies remain a substantial challenge for both clinicians and researchers. Surgical treatment includes suture or transplantation of autograft, allograft or xenograft, and these serve as the most common technique for rescuing tendon injuries...
January 5, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29330670/treatment-of-partial-thickness-rotator-cuff-tears-in-overhead-athletes
#6
REVIEW
Joseph N Liu, Grant H Garcia, Anirudh K Gowd, Brandon C Cabarcas, Michael D Charles, Anthony A Romeo, Nikhil N Verma
PURPOSE OF REVIEW: To review the etiology, classification, presentation, evaluation, treatment strategy, and outcomes in overhead athletes with partial thickness rotator cuff tears. RECENT FINDINGS: Despite advances in surgical repair techniques, return to play following surgical repair of partial rotator cuff tears remains modest at best. Overhead athletes may be particularly prone to rotator cuff pathology due to the supraphysiological strains within the tendon during the throwing motion, as well as mechanical stress with contact between the undersurface of the rotator cuff and the glenoid...
January 13, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29328887/macroscopic-rotator-cuff-tendinopathy-and-histopathology-do-not-predict-repair-outcomes-of-rotator-cuff-tears
#7
Paul M Sethi, Chirag D Sheth, Leo Pauzenberger, Mary Beth R McCarthy, Mark P Cote, Emma Soneson, Seth Miller, Augustus D Mazzocca
BACKGROUND: Numerous studies have identified factors that may affect the chances of rotator cuff healing after surgery. Intraoperative tendon quality may be used to predict healing and to determine type of repair and/or consideration of augmentation. There are no data that correlate how gross tendon morphology and degree of tendinopathy affect patient outcome or postoperative tendon healing. Purpose/Hypothesis: The purposes of this study were to (1) compare the gross appearance of the tendon edge during arthroscopic rotator cuff repair with its histological degree of tendinopathy and (2) determine if gross appearance correlated with postoperative repair integrity...
January 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29327070/-open-repair-of-gluteus-medius-and-minimus-tendons-tears-with-double-row-technique-clinical-and-radiological-results
#8
J H Schröder, M Geßlein, M Schütz, C Perka, D Krüger
BACKGROUND: Operative refixation is a new therapeutic option in cases of failed conservative treatment for trochanteric pain syndrome (TPS) and lesions of the hip abductors in magnetic resonance imaging (MRI). OBJECTIVE: Evaluation of the clinical and radiological results after open gluteus medius and minimus tendon reconstruction with a double-row technique was carried out. MATERIAL AND METHODS: Patients with failed conservative treatment for TPS and confirmed lesions of the hip abductors in MRI were treated by open hip abductor tendon reconstruction with a double-row technique...
January 11, 2018: Der Orthopäde
https://www.readbyqxmd.com/read/29319733/biomechanic-and-histologic-analysis-of-fibroblastic-effects-of-tendon-to-bone-healing-by-transforming-growth-factor-%C3%AE-1-tgf-%C3%AE-1-in-rotator-cuff-tears
#9
Chong Zhang, Yu-Jie Liu
PURPOSE: To evaluate the effect of transforming growth factor β1 (TGF-β1) on tendon-to-bone reconstruction of rotator cuff tears. METHODS: Seventy-two rat supraspinatus tendons were transected and reconstructed in situ. At 8 and 16 weeks, specimens of three groups; that is control, L-dose (low dose), and H-dose (high dose) were harvested and underwent a biomechanical test to evaluate the maximum load and stiffness values. Histology sections of the tendon-to-bone interface were identified by hematoxylin-eosin or Masson trichrome stain...
December 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/29318178/outcomes-after-dermal-allograft-reconstruction-of-chronic-or-subacute-pectoralis-major-tendon-ruptures
#10
Julie A Neumann, Christopher M Klein, Carola F van Eck, Hithem Rahmi, John M Itamura
Background: Avoiding delay in the surgical management of pectoralis major (PM) ruptures optimizes outcomes. However, this is not always possible, and when a tear becomes chronic or when a subacute tear has poor tissue quality, a graft can facilitate reconstruction. Purpose: The primary aim was to evaluate the clinical outcomes of PM reconstruction with dermal allograft augmentation for chronic tears or for subacute tears with poor tissue quality. A second aim was to determine patient and surgical factors affecting outcome...
January 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29317260/growth-factor-delivery-strategies-for-rotator-cuff-repair-and-regeneration
#11
Anupama Prabhath, Varadraj N Vernekar, Enid Sanchez, Cato T Laurencin
The high incidence of degenerative tears and prevalence of retears (20-95%) after surgical repair makes rotator cuff injuries a significant health problem. This high retear rate is attributed to the failure of the repaired tissue to regenerate the native tendon-to-bone insertion (enthesis). Biological augmentation of surgical repair such as autografts, allografts, and xenografts are confounded by donor site morbidity, immunogenicity, and disease transmission, respectively. In contrast, these risks may be alleviated via growth factor therapy, which can actively influence the healing environment to promote functional repair...
January 6, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29314867/location-of-rotator-cuff-tear-initiation-a-magnetic-resonance-imaging-study-of-191-shoulders
#12
Jeung Yeol Jeong, Seul Ki Min, Keun Min Park, Yong Bok Park, Kwang Joon Han, Jae Chul Yoo
BACKGROUND: Degenerative rotator cuff tears (RCTs) are generally thought to originate at the anterior margin of the supraspinatus tendon. However, a recent ultrasonography study suggested that they might originate more posteriorly than originally thought, perhaps even from the isolated infraspinatus (ISP) tendon, and propagate toward the anterior supraspinatus. Hypothesis/Purpose: It was hypothesized that this finding could be reproduced with magnetic resonance imaging (MRI). The purpose was to determine the most common location of degenerative RCTs by using 3-dimensional multiplanar MRI reconstruction...
January 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29306551/effects-of-tear-size-and-location-on-predictions-of-supraspinatus-tear-propagation
#13
R Matthew Miller, James Thunes, Volker Musahl, Spandan Maiti, Richard E Debski
Rotator cuff tears remain a significant clinical problem with a high incidence rate and severe clinical burden. Previous computational models developed to study rotator cuff tears have not modeled tissue damage and tear propagation. The objective of this study was to predict tear propagation for various combinations of tear size and location using an experimentally validated finite element model of supraspinatus tendon. It was hypothesized that larger rotator cuff tears propagate at lower loads than smaller tears, and that posterior tears require higher loads to propagate than anterior tears...
December 15, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29305621/-modern-treatment-strategies-for-the-long-head-of-the-biceps-tendon
#14
REVIEW
S Braun, A B Imhoff
The long head of the biceps and the biceps pulley sling are prone to acute or degenerative injury. As they both were identified as major pain generators, adequate diagnosis and treatment is vital for successful treatment of shoulder pain. Although the basic principles to address either pathology have not changed over the last decades, new trends have evolved to simplify surgical options. SLAP (superior labral tear from anterior to posterior) repair is seen more restrictive and is mostly performed in young individuals, whereas tenotomy or tenodesis are more often used in patients over 30...
January 5, 2018: Der Orthopäde
https://www.readbyqxmd.com/read/29305287/endoscopic-repair-of-partial-thickness-undersurface-tears-of-the-abductor-tendon-clinical-outcomes-with-minimum-2-year-follow-up
#15
David E Hartigan, Itay Perets, Sherwin W Ho, John P Walsh, Leslie C Yuen, Benjamin G Domb
PURPOSE: To report the minimum 2-year outcomes of transtendinous repair of partial-thickness undersurface tears of the abductor tendon using patient-reported outcomes (PROs), visual analog scale (VAS) scores, and patient satisfaction scores. METHODS: All patients who underwent endoscopic transtendinous gluteus medius repair between October 2009 and May 2013 at 1 institution were prospectively evaluated. The exclusion criteria consisted of less than 2 years' follow-up, previous hip surgery, inflammatory arthritis, open surgery, full-thickness abductor tear, and Workers' Compensation patients...
January 2, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29304985/editorial-commentary-the-partial-thickness-rotator-cuff-tear-is-acromioplasty-without-repair-ever-indicated
#16
EDITORIAL
Frank A Cordasco
I believe that arthroscopic repair is the treatment of choice for patients with partial thickness rotator cuff tears when nonoperative methods have been exhausted. Excluding overhead athletes and patients in whom long head biceps tendon pathology is the primary concern, I do not believe that a significant role exists for debridement with or without acromioplasty in the majority of patients with partial thickness tears. Regarding the repair technique, I prefer in situ repair for bursal-sided tears because the superior capsule is intact and completion of the tear with repair for articular-sided tears...
January 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29304958/editorial-commentary-proximal-hamstring-syndrome-another-pain-in-the-buttock
#17
EDITORIAL
Dean K Matsuda
Proximal hamstring injuries cause buttock pain and may result in significant weakness and sciatic neuralgia. Avulsion ruptures involving 2 or more tendons with >2-cm retraction may benefit from early open surgical repair. More chronic equivalents may benefit from Achilles allograft reconstruction. Chronic proximal hamstring syndrome causing posterior thigh and sit pain may occur from less severe, often repetitive injury to the proximal hamstring origin with secondary sciatic neuralgia from local adhesions or scar entrapment...
January 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29304955/editorial-commentary-superior-capsule-reconstruction-graft-healing-for-success
#18
EDITORIAL
Teruhisa Mihata
In my experience, after superior capsule reconstruction for irreparable rotator cuff tears, if the graft heals, we can expect a successful outcome, such as an American Shoulder and Elbow Surgeons score of more than 90 points and a visual analog scale score of less than 1.0. To decrease the graft tear rate after surgery, I have found that a thicker, stiffer graft than can be achieved with a dermal allograft alone is required to restore superior stability in the glenohumeral joint. Furthermore, the graft size should be determined precisely from the size of the defect in the rotator cuff tendons...
January 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29303366/current-clinical-radiological-and-treatment-perspectives-of-patellofemoral-pain-syndrome
#19
Aishwarya Gulati, Christopher McElrath, Vibhor Wadhwa, Jay P Shah, Avneesh Chhabra
Anterior knee pain in active young adults is commonly related to patellofemoral (PF) pain syndrome (PFPS), which can be broadly classified into patellar malalignment and patellar maltracking. PFPS can be caused by a host of miserable malalignments, such as excessive femoral antetorsion, tibial varus / external rotation, knee valgus and pes planus. Radiographic, CT and MRI evaluations are commonly obtained to further elucidate the malalignment and maltracking abnormalities and exclude other related differentials, such as lateral meniscus tear, extensor tendon tear, anterior tenosynovial giant cell tumor and plica syndrome...
January 5, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29298726/effects-of-bone-marrow-aspirate-concentrate-and-platelet-rich-plasma-on-patients-with-partial-tear-of-the-rotator-cuff-tendon
#20
Sang Jun Kim, Eun Kyung Kim, Sun Jeong Kim, Da Hyun Song
BACKGROUND: We compared the clinical course of rotator cuff tears between rotator cuff exercise and bone marrow aspirate concentration (BMAC)-platelet rich plasma (PRP) injection to identify the therapeutic effects of BMAC-PRP on partial tear of the rotator cuff tendon. METHODS: Twenty-four patients with partial tear of the rotator cuff tendon participated in this study. Twelve patients underwent extraction of BMACs and PRP and received the injection of BMAC-PRP at the tear site under ultrasound guidance...
January 3, 2018: Journal of Orthopaedic Surgery and Research
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