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"Rotator cuff 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/29337026/effect-of-recombinant-human-growth-hormone-on-rotator-cuff-healing-after-arthroscopic-repair-preliminary-result-of-a-multicenter-prospective-randomized-open-label-blinded-end-point-clinical-exploratory-trial
#2
Joo Han Oh, Seok Won Chung, Kyung-Soo Oh, Jae Chul Yoo, Wonhee Jee, Jung-Ah Choi, Yang-Soo Kim, Jin-Young Park
BACKGROUND: This study evaluated the effect of systemic injection of recombinant human growth hormone (rhGH) on outcomes after arthroscopic rotator cuff repair. METHODS: This multicenter, prospective, randomized, comparative trial, randomized patients who underwent arthroscopic repair of large-sized rotator cuff tears into 3 groups: rhGH 4 mg group (n = 26), rhGH 8 mg group (n = 24) , and control group (n = 26). Sustained release rhGH was injected subcutaneously once weekly for 3 months postoperatively...
January 11, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29330670/treatment-of-partial-thickness-rotator-cuff-tears-in-overhead-athletes
#3
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
#4
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/29327176/how-to-use-a-graft-in-irreparable-rotator-cuff-tears-a-literature-review-update-of-interposition-and-superior-capsule-reconstruction-techniques
#5
REVIEW
Kevin C Wall, Alison P Toth, Grant E Garrigues
PURPOSE OF REVIEW: To introduce the challenges in addressing irreparable rotator cuff tears and examine the surgical options, specifically interposition grafting and superior capsule reconstruction. RECENT FINDINGS: Interposition grafting of rotator cuff tears shows promising results in reducing pain and improving function postoperatively and one study demonstrated that it performs significantly better than partial repair alone. Superior capsule reconstruction has become popular rapidly, but given the novelty of the procedure, there is currently a paucity of outcomes data to review...
January 11, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29325703/the-prevalence-and-morphometric-analysis-of-ossified-superior-transverse-scapular-ligaments-in-patients-with-rotator-cuff-tears
#6
Jung Youn Kim, Yong Girl Rhee
BACKGROUND: The prevalence of ossified superior transverse scapular ligaments (OSTSLs) in rotator cuff tears (RCTs) has not yet been determined. The purposes of this study were to evaluate the prevalence of OSTSLs in RCTs and to investigate the correlation between OSTSL morphology and supraspinatus muscle atrophy. METHODS: We analyzed a total of 213 patients with RCTs for whom 3-dimensional (3D) computed tomography (CT) and magnetic resonance imaging were performed prior to arthroscopic procedures...
January 8, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29325577/dynamic-kinematics-of-the-glenohumeral-joint-in-shoulders-with-rotator-cuff-tears
#7
Naoya Kozono, Takamitsu Okada, Naohide Takeuchi, Satoshi Hamai, Hidehiko Higaki, Takeshi Shimoto, Satoru Ikebe, Hirotaka Gondo, Yoshitaka Nakanishi, Takahiro Senju, Yasuharu Nakashima
BACKGROUND: No clear trend has emerged from the literature regarding three-dimensional (3D) translations of the humerus relative to the scapula in shoulders with rotator cuff tears (RCTs). The purpose of this study was to evaluate the kinematics of RCT shoulders using 3D-to-two-dimensional (2D) model-to-image registration techniques. METHODS: Dynamic glenohumeral kinematics during scapular plane abduction and axial rotation were analyzed in 11 RCT patients and 10 healthy control subjects...
January 11, 2018: Journal of Orthopaedic Surgery and Research
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
#8
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/29319655/superior-capsular-reconstruction-with-a-partial-rotator-cuff-repair-a-case-report
#9
John M Tokish, Amit Momaya, Troy Roberson
CASE: Chronic massive irreparable rotator cuff tears remain challenging to treat. We present the case of a 70-year-old active and healthy woman who presented with 6 months of worsening shoulder pain and function; she had experienced considerable deterioration over the past 2 months. Nonoperative management of the massive rotator cuff tear was not successful. Superior capsule reconstruction (SCR) was performed with a partial rotator cuff repair. CONCLUSION: SCR is an exciting advancement for the chronic massive irreparable rotator cuff tear, one of the more challenging problems encountered by shoulder surgeons...
January 10, 2018: JBJS Case Connector
https://www.readbyqxmd.com/read/29317260/growth-factor-delivery-strategies-for-rotator-cuff-repair-and-regeneration
#10
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
#11
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/29311489/retained-myogenic-potency-of-human-satellite-cells-from-torn-rotator-cuff-muscles-despite-fatty-infiltration
#12
Masashi Koide, Yoshihiro Hagiwara, Masahiro Tsuchiya, Makoto Kanzaki, Hiroyasu Hatakeyama, Yukinori Tanaka, Takashi Minowa, Taro Takemura, Akira Ando, Takuya Sekiguchi, Yutaka Yabe, Eiji Itoi
Rotator cuff tears (RCTs) are a common shoulder problem in the elderly that can lead to both muscle atrophy and fatty infiltration due to less physical load. Satellite cells, quiescent cells under the basal lamina of skeletal muscle fibers, play a major role in muscle regeneration. However, the myogenic potency of human satellite cells in muscles with fatty infiltration is unclear due to the difficulty in isolating from small samples, and the mechanism of the progression of fatty infiltration has not been elucidated...
2018: Tohoku Journal of Experimental 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/29305099/the-posterior-ridge-of-the-greater-tuberosity-of-the-humerus-a-suitable-landmark-for-the-posterior-approach-to-the-shoulder-joint
#14
Karl Grob, Rebecca Helen Monahan, Mirjana Manestar, Luis Filgueira, Vilijam Zdravkovic
BACKGROUND: The purpose of this study was to evaluate the posterior ridge of the greater tuberosity, a palpable prominence during surgery, as a landmark for the posterior approach to the glenohumeral joint. METHODS: Twenty-five human cadaveric shoulders were dissected. In 5 cases, a full-thickness rotator cuff tear was present. The posterior surgical anatomy was defined, and the distance from the ridge to the interval between the infraspinatus (IS) and teres minor (TM) muscle, the distance from the ridge to the inferior border of the glenoid (IBG), and the distance between the IS-TM interval and the IBG were determined...
January 3, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29304985/editorial-commentary-the-partial-thickness-rotator-cuff-tear-is-acromioplasty-without-repair-ever-indicated
#15
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/29304956/editorial-commentary-superior-capsule-reconstruction-with-dermal-allograft-effective-marketing-or-the-real-deal
#16
EDITORIAL
Timothy S Leroux
The young patient with a massive, irreparable rotator cuff tear is a challenging problem. Not only is this patient population demanding, but of the few surgical options that exist to manage this problem, each have their own unique limitations; as such, the orthopaedic community continues to search for a treatment that maximizes outcome and durability, while minimizing risk and preserving the native shoulder. Over the past few years, there has been considerable interest in a new surgical technique: the superior capsule reconstruction (SCR)...
January 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29304955/editorial-commentary-superior-capsule-reconstruction-graft-healing-for-success
#17
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/29299503/massive-emphysema-and-pneumothorax-following-shoulder-arthroscopy-under-general-anaesthesia-a-case-report
#18
Mohammad J Shariyate, Amir R Kachooei, Mohammad H Ebrahimzadeh
The patient was a 61-year-old female with massive rotator cuff tear who had no history of smoking, COPD, asthma, or other pulmonary diseases. Four hours following shoulder arthroscopy, the patient developed progressive dyspnea, which was diagnosed as pneumothorax with subcutaneous emphysema extending to the neck and face. Chest tube was inserted promptly. The patient was discharged with a good condition after 7 days. Follow up of the patient for the next 3 months was uneventful.
November 2017: Archives of Bone and Joint Surgery
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
#19
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
https://www.readbyqxmd.com/read/29290609/factors-affecting-rotator-cuff-integrity-after-arthroscopic-repair-for-medium-sized-or-larger-cuff-tears-a-retrospective-cohort-study
#20
Young-Kyu Kim, Kyu-Hak Jung, Jin-Woo Kim, Ui-Seok Kim, Do-Hyun Hwang
BACKGROUND: We wished to identify the preoperative prognostic factors associated with structural integrity after repair of medium-sized and larger rotator cuff tears and to determine the cutoff values using receiver operating characteristic curve analysis. METHODS: The study included 180 patients with medium-sized and larger rotator cuff tears. Each had a minimum 2-year postoperative follow-up by magnetic resonance imaging. We assessed several patient-related and disease-related preoperative factors using univariate and multivariate logistic regression analysis...
December 29, 2017: Journal of Shoulder and Elbow Surgery
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