Search Our Scientific Publications & Authors

Reg Anesth Pain Med 2019 Feb 15. Epub 2019 Feb 15.

Departments of Orthopaedic Surgery, University of California San Diego, San Diego, California, USA.

Background And Objectives: Percutaneous peripheral nerve stimulation (PNS) is an analgesic modality involving the insertion of a lead through an introducing needle followed by the delivery of electric current. This modality has been reported to treat chronic pain as well as postoperative pain following knee and foot surgery. However, it remains unknown if this analgesic technique may be used in ambulatory patients following upper extremity surgery. Read More

Wideochir Inne Tech Maloinwazyjne 2019 Jan 11;14(1):114-125. Epub 2019 Jan 11.

Center of Sports Rehabilitation, Warsaw, Poland.

Introduction: Shoulder pain and alterations in the range of motion are common disorders in tennis players. However, the relation between shoulder structures and these conditions is unknown.

Aim: To evaluate whether, using ultrasonography, one can identify tennis players with shoulder pain and those having specific changes of the range of rotation of the glenohumeral joint. Read More

J Orthop Res 2019 Feb 12. Epub 2019 Feb 12.

.Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University Medical Center, 770 Welch Rd., Suite 400, Palo Alto, CA 94304.

Rotator cuff (RTC) repair outcomes are unsatisfactory due to the poor healing capacity of the tendon bone interface (TBI). In our preceding study, tendon hydrogel (tHG), which is a type I collagen rich gel derived from human tendons, improved biomechanical properties of the TBI in a rat chronic RTC injury model. Here we investigated whether adipose-derived stem cell (ASC)-seeded tHG injection at the repair site would further improve RTC healing. Read More

Injury 2019 Feb 2. Epub 2019 Feb 2.

Università degli Studi di Modena e Reggio Emilia, Modena, Italy.

Purpose: Massive rotator cuff tears are common in the aging population. The incidence of failed rotator cuff repairs is still quite high, especially in the treatment of full-thickness tears or revision repairs. In this context, natural and synthetic meshes can be used as augmentation scaffolds or as devices to close the gap between a retracted tendon and the bone. Read More

Disabil Rehabil 2019 Feb 8:1-8. Epub 2019 Feb 8.

a Department of Physical Therapy , University of Alberta , Edmonton , Canada.

Purpose: Shoulder pain causes significant disability, with rotator cuff disease as a common diagnosis. Differentially diagnosing partial tears of the rotator cuff tendons is difficult despite use of imaging and clinical examination. Our objective was to determine if a clinical assessment framework could discriminate between patients with partial and full thickness tears. Read More

Cochrane Database Syst Rev 2019 01 17;1:CD005619. Epub 2019 Jan 17.

Monash Department of Clinical Epidemiology, Cabrini Institute and Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia, 3144.

Background: Surgery for rotator cuff disease is usually used after non-operative interventions have failed, although our Cochrane Review, first published in 2007, found that there was uncertain clinical benefit following subacromial decompression surgery.

Objectives: To synthesise the available evidence of the benefits and harms of subacromial decompression surgery compared with placebo, no intervention or non-surgical interventions in people with rotator cuff disease (excluding full thickness rotator cuff tears).

Search Methods: We searched CENTRAL, MEDLINE, Embase, Clinicaltrials. Read More

Knee Surg Sports Traumatol Arthrosc 2019 Jan 31. Epub 2019 Jan 31.

Department of Orthopaedic Surgery, University of Minnesota, 2450 Riverside Avenue South, Suite R200, Minneapolis, MN, 55454, USA.

Purpose: The purpose of this study was to provide arthroscopic measurements and orientations of the axillary and musculocutaneous nerves medial to the coracoid.

Methods: A retrospective chart review of 29 patients undergoing arthroscopic subscapularis repair and arthroscopic cadaveric dissection of 23 shoulders was used to analyze neuroanatomical distances to arthroscopic landmarks and to document the orientations of the axillary and musculocutaneous nerves using a clock face analogy. The clock face data was analyzed by separating the clock face into four quadrants and the frequency of any crossing nerve within each of the four quadrants was then determined. Read More

Medicine (Baltimore) 2019 Feb;98(5):e14352

Department of Anesthesiology and Pain Medicine, Soonchunhyang University, Seoul Hospital, Seoul, Republic of Korea.

Rationale: Variant angina is characterized by coronary artery spasm irrespective of the presence of fixed stenotic coronary lesions. Perioperative coronary artery spasm may be induced by the supersensitivity of vascular smooth muscle cells caused by various stimuli, including stimulation of the parasympathetic nervous system.

Patient Concerns: A 57-year-old male patient was undergoing arthroscopic rotator cuff repair under combined interscalene brachial plexus block and general anesthesia in the lateral decubitus position. Read More

Medicine (Baltimore) 2019 Feb;98(5):e14264

Department of Orthopaedic Surgery, Soonchunhyang University Hospital Cheonan, Cheonan, Korea.

Rationale: Adequate stability of traumatic anterior shoulder dislocation without any obvious damage to the anterior capsulolabral structure in elderly patients can be achieved by treating the associated rotator cuff injuries. However, in case of recurrent shoulder dislocation despite rotator cuff repair, the repaired rotator cuff may be weakened or reruptured and is often impossible to repair again. Therefore, the role of the rotator cuff as a shoulder stabilizer cannot be expected. Read More

ACS Biomater Sci Eng 2018 Dec 19;4(12):4367-4377. Epub 2018 Oct 19.

Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States.

Tendon injuries often require surgical intervention and even then result in poor outcomes due to scar formation and repeated failure. Biomaterial implants offer the potential to address multiple underlying concerns preventing improved tendon repair. Here, we describe modifications to the composition of an anisotropic collagen-glycosaminoglycan (CG) scaffold biomaterial, incorporating amniotic membrane (AM)-derived matrix to alter the inflammatory response and establish conditions for improved regenerative repair. Read More

J Hand Surg Am 2019 Jan 23. Epub 2019 Jan 23.

Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University Medical Center; Division of Plastic and Reconstructive Surgery, Veterans Affairs Palo Alto Health Care System. Electronic address:

Purpose: Poor healing of the tendon-bone interface (TBI) after rotator cuff (RTC) tears leads to high rates of recurrent tear following repair. Previously, we demonstrated that an injectable, thermoresponsive, type I collagen-rich, decellularized human tendon-derived hydrogel (tHG) improved healing in an acute rat Achilles tendon injury model. The purpose of this study was to investigate whether tHG enhances the biomechanical properties of the regenerated TBI in a rat model of chronic RTC injury and repair. Read More

Pain Manag 2019 Jan 25. Epub 2019 Jan 25.

Department of Allied Health Professions, University of the West of England, Bristol, England, UK.

Physiother Theory Pract 2019 Jan 24:1-9. Epub 2019 Jan 24.

a Brooks Rehabilitation , Jacksonville , FL , USA.

Background: Rotator cuff (RTC) dysfunction incidence ranges from 7% to 25% in the general population with a high recurrence rate. RTC musculature plays a significant role in dynamic stability of the glenohumeral joint with damage to these structures associated with proprioceptive impairments. Impaired proprioception has been linked to increased injury risk in other body regions; however, similar relationships with the upper extremity have not been extensively evaluated. Read More

Cell Tissue Bank 2019 Jan 23. Epub 2019 Jan 23.

IRCCS Istituto Ortopedico Galeazzi, U.O. C.A.S.C.O, 20161, Milan, Italy.

The goal of repairing rotator cuff injuries is an anatomical procedure without tension repair. Considering the high percentage of re-rupture after large and massive lesions repair, numerous surgical solutions have been proposed. The purpose of this systematic review was to present retears and complication rates following arthroscopic treatment of rotator cuff pathology with scaffolds. Read More

Biomed Res Int 2018 23;2018:5859013. Epub 2018 Dec 23.

Department of Orthopedic Surgery, Konkuk University School of Medicine, Seoul, Republic of Korea.

Rotator cuff tear is a muscle-tendinous injury representative of various musculoskeletal disorders. In general, rotator cuff tear occurs in the tendon, but it causes unloading of the muscle resulting in muscle degeneration including fatty infiltration. These muscle degenerations lead to muscle weakness, pain, and loss of shoulder function and are well known as important factors for poor functional outcome after rotator cuff repair. Read More

Am J Transl Res 2018 15;10(11):3291-3309. Epub 2018 Nov 15.

Department of Clinical and Translational Science and Orthopedic Surgery, School of Medicine, Creighton University Omaha, NE 68178, USA.

Derangements in tendon matrisome are pathognomonic for musculoskeletal disorders including rotator cuff tendinopathies (RCT). Collagen type-1 accounts for more than 85% of the dry weight of tendon extracellular matrix (ECM). The understanding of basic tendon physiology, organization of ECM, structure and function of component biomolecules of matrisome and the underlying regulatory mechanisms reveal the pathological events associated with RCT. Read More

Disabil Rehabil 2019 Jan 17:1-6. Epub 2019 Jan 17.

a Physiotherapy Program, Department of Health Sciences School of Sciences , European University of Cyprus , Nicosia , Cyprus.

Background: The Shoulder Pain and Disability Index is one of the most common questionnaire to evaluate the impact of shoulder disorders on function. There is no valid and reliable Greek version of the Shoulder Pain and Disability Index available at present for all shoulder disorders. Therefore, the aim of the current study was to test the reliability and validity of the Shoulder Pain and Disability Index in patients with shoulder pain for at least four weeks. Read More

Arthroscopy 2019 Jan 10. Epub 2019 Jan 10.

Hospital Italiano de Buenos Aires, Buenos Aires City, Argentina.

Purpose: To analyze clinical outcomes, return to sports, and complications in a series of patients with painful partial-thickness rotator cuff tears treated with arthroscopic in situ repair with suture anchors who had a minimum of 8 years of follow-up.

Methods: Sixty-two patients who had undergone an arthroscopic in situ repair for partial-thickness rotator cuff tears were evaluated. All injuries involved the supraspinatus tendon. Read More

J Am Acad Orthop Surg 2019 Jan 2. Epub 2019 Jan 2.

From the Columbia University Medical Center, Department of Orthopedics, Center for Shoulder Elbow and Sports Medicine, New York, NY.

Adhesive capsulitis presents clinically as limited, active and passive range of motion caused by the formation of adhesions of the glenohumeral joint capsule. Radiographically, it is thickening of the capsule and rotator interval. The pathology of the disease, and its classification, relates to inflammation and formation of extensive scar tissue. Read More

Eur J Trauma Emerg Surg 2019 Jan 5. Epub 2019 Jan 5.

Department of Orthopedics, Helsingborg Hospital, Region Skåne, Sweden.

Background: Lost workdays following rotator cuff repair is not well-studied in the literature. We aimed to define the time away from work following early arthroscopic repair of acute traumatic rotator cuff tears and compare it with the recommendations of the American Medical Disability Advisor (MD Guidelines) and The Swedish Social Insurance Agency.

Methods: Thirty-two consecutive working patients with a median age of 58 (42-70) years suffering from acute traumatic rotator cuff tears who underwent arthroscopic repair were prospectively studied. Read More

Bone Joint J 2019 Jan;101-B(1):63-67

Division of Sports and shoulder, Hospital for Special Surgery, New York, New York, USA.

Aims: The number of rotator cuff repairs that are undertaken is increasing. Reverse shoulder arthroplasty (RSA) is the procedure of choice for patients with rotator cuff arthropathy. We sought to determine whether patients who underwent rotator cuff repair and subsequent RSA had different outcomes compared with a matched control group who underwent RSA without a previous rotator cuff repair. Read More

Environ Int 2018 Dec 21. Epub 2018 Dec 21.

Coronel Institute of Occupational Health, Amsterdam UMC, location AMC, Amsterdam Public Health Research Institute, Amsterdam, Netherlands. Electronic address:

Background: The World Health Organization (WHO) and the International Labour Organization (ILO) are developing a joint methodology for estimating the national and global work-related burden of disease and injury (WHO/ILO joint methodology), with contributions from a large network of experts. In this paper, we present the protocol for two systematic reviews of parameters for estimating the number of disability-adjusted life years from osteoarthritis of hip or knee, and selected other musculoskeletal diseases respectively, attributable to exposure to occupational ergonomic risk factors to inform the development of the WHO/ILO joint methodology.

Objectives: We aim to systematically review studies on exposure to occupational ergonomic risk factors (Systematic Review 1) and systematically review and meta-analyze estimates of the effect of exposure to occupational ergonomic risk factors on osteoarthritis of the hip or knee, and selected other musculoskeletal diseases respectively (Systematic Review 2), applying the Navigation Guide systematic review methodology as an organizing framework, conducting both systematic reviews in tandem and in a harmonized way. Read More

Zhongguo Gu Shang 2018 Dec;31(12):1172-1179

Department of Orthopaedics and Trauma, the First Hospital Affiliated to Hunan University of Traditional Chinese Medicine, Changsha 410007, Hunan, China.

Rotator cuff tear is a common disease that causes shoulder pain and limitation of activity. Rotator cuff repair with arthroscope has become the mainstream method with advance in surgical techniques. In spite of this, the highly rate of retear after surgery mainly because the tendon to bone interface form scar tissue rather than native tissue. Read More

Joints 2018 Sep 31;6(3):211-214. Epub 2018 Oct 31.

Cabinet Médical, Lausanne, Switzerland.

Arthroscopic treatment of greater tuberosity (GT) fractures has been previously described. Arthroscopy allows identifying and addressing coexisting injuries, such as rotator cuff tears, labrum, or superior labrum anterior and posterior lesions, which are often present. Fracture comminution precludes the use of rigid fracture fixation with screws and arthroscopic rotator cuff repair is performed instead. Read More

J Shoulder Elbow Surg 2018 Dec 17. Epub 2018 Dec 17.

Department of Orthopedics and Traumatology, Paracelsus Medical University, Salzburg, Austria; Center for Musculoskeletal Surgery, Campus Virchow, Charité-Universitaetsmedizin Berlin, Berlin, Germany.

Background: The purpose of this study was to evaluate the long-term clinical and radiologic results after arthroscopic transosseous rotator cuff repair (TORCR).

Methods: A total of 69 patients with full-thickness supraspinatus tendon tears with or without infraspinatus tendon tears treated with arthroscopic TORCR by a single surgeon between 1998 and 2003 were included. Among them, 56 patients (81%) with a mean age of 58 ± 5 years (range, 42-70 years) were available for final follow-up examination after an average of 15 ± 2 years (range, 12-18 years). Read More

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2018 Dec;32(12):1540-1544

Luoyang Orthopedic-Traumatological Hospital, Orthopedic Hospital of Henan Province, Luoyang Henan, 471002, P.R.China.

Objective: To summarize a new type of proximal humerus fracture-proximal humerus degloving fracture, and discuss its injury mechanism, classification criteria, and treatment methods.

Methods: The clinical data of 23 patients with proximal humerus degloving fracture between September 2009 and September 2016 was retrospectively analyzed. There were 14 males and 9 females, with an average age of 39. Read More

Orthop J Sports Med 2018 Dec 12;6(12):2325967118813083. Epub 2018 Dec 12.

Sports Medicine and Shoulder Service, Hospital for Special Surgery, New York, New York, USA.

Background: Prior to the annual National Football League (NFL) Draft, the top college football prospects are evaluated by medical personnel from each team at the NFL Scouting Combine. On the basis of these evaluations, each athlete is assigned an orthopaedic grade from the medical staff of each club, which aims to predict the impact of an athlete's injury history on his ability to participate in the NFL.

Purpose: (1) To identify clinical predictors of signs, symptoms, and subsequent professional participation associated with football-related injuries identified at the NFL Combine and (2) to assess the methodological quality of the evidence currently published. Read More

Obere Extrem 2018 7;13(4):269-272. Epub 2018 Nov 7.

Department of Orthopedic Surgery, Mayo Clinic, 200 First Street SW, 55905 Rochester, MN USA.

Lower trapezius tendon transfer with Achilles tendon allograft augmentation may be used to treat patients with lack of active external rotation following shoulder paralysis or massive irreparable posterosuperior rotator cuff tears. In the setting of shoulder paralysis, the integrity of the ipsilateral lower trapezius may be compromised. In this instance, the contralateral lower trapezius may be used with reasonable results. Read More

Rev Esp Cir Ortop Traumatol 2019 Jan - Feb;63(1):1-6. Epub 2018 Dec 4.

Departamento de Anatomía Humana y Embriología, Facultad de Medicina, Universidad de Granada, Granada, España.

Objective: The aim of this study was to investigate the clinical results and radiographic findings after superior capsular reconstruction (SCR) of postero-superior symptomatic irreparable rotator cuff tears (PSIRCT) using a new SCR technique using autologous hamstring graft MATERIAL AND METHODS: From 2014 to 2016, 8 shoulders of 8 patients (mean age 59.6 years) with PSIRCT underwent SCR using autologous hamstring graft. Physical examination, X-ray and MRI were performed before the surgery and 12 months after it. Read More

JB JS Open Access 2018 Sep 7;3(3):e0005. Epub 2018 Aug 7.

Departments of Health Services Policy and Management (C.G.C., S.B.F., B.C., and J.M.B.) and Exercise Science (C.A.T.), Center for Effectiveness Research in Orthopaedics, University of South Carolina, Columbia, South Carolina.

Background: Atraumatic rotator cuff tear is a common orthopaedic complaint for people >60 years of age. Lack of evidence or consensus on appropriate treatment for this type of injury creates the potential for substantial discretion in treatment decisions. To our knowledge, no study has assessed the implications of this discretion on treatment patterns across the United States. Read More

J Biomech 2019 Jan 14;82:280-290. Epub 2018 Nov 14.

Center for Advanced Orthopaedic Studies, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA; Carl J. Shapiro Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA; Department of Orthopaedic Surgery, Yerevan State Medical University, Yerevan, Armenia. Electronic address:

Background: Numerous biomechanical studies have addressed normal shoulder function and the factors that affect it. While these investigations include a mix of in-vivo clinical reports, ex-vivo cadaveric studies, and computer-based simulations, each has its own strengths and limitations. A robust methodology is essential in cadaveric work but does not always come easily. Read More

Phys Sportsmed 2018 Dec 4. Epub 2018 Dec 4.

a Department of Orthopaedics , Alpert Medical School of Brown University , Providence , RI.

Background: Although football is one of the most popular collegiate sports, the epidemiology of and risk factors for shoulder and elbow injuries in this population not been recently described. We aimed to characterize this incidence in National Collegiate Athletic Association (NCAA) football players, determine risk factors, and establish outcomes after injury.

Methods: All shoulder and elbow injuries in men's football occurring during the 2009-2010 through 2013-2014 academic years were retrospectively identified in the NCAA Injury Surveillance Program database. Read More

Med Sci Monit 2018 Nov 30;24:8678-8684. Epub 2018 Nov 30.

Department of Radiology, Kirikkale University School of Medicine, Kirikkale, Turkey.

BACKGROUND The aim of this study was to investigate the effects of coracoid morphology, coracohumeral distance, coracoglenoid angle, and coracohumeral angle variabilities on subcoracoid impingement development using magnetic resonance imaging (MRI). MATERIAL AND METHODS A total of 200 patients (87 males with mean age of 51.1±15. Read More

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

Am J Sports Med 2018 Nov 28:363546518808495. Epub 2018 Nov 28.

Steadman Philippon Research Institute, Vail, Colorado, USA.

Background:: The arthroscopic "bony Bankart bridge" (BBB) repair technique was recently shown to successfully restore shoulder stability at short-term follow-up, but longer-term outcomes have not yet been described.

Purpose:: To report the outcomes at minimum 5-year follow-up after BBB repair for anterior shoulder instability with a bony Bankart lesion.

Study Design:: Case series; Level of evidence, 4. Read More

Handb Clin Neurol 2018 ;158:385-400

Department of Exercise and Sport Science, Eastern Kentucky University, Richmond, KY, United States.

Neuromuscular activity, organized in coordinated patterns, forms the basis of task-specific function in sports and exercise. The content and extent of these patterns may be variable, but include elements of activation/inhibition, co-activation, concentric/eccentric activation, proximal-to-distal activation, plyometric activation, and preactivation stiffness. They may be based on inherent neuromuscular architecture, but are commonly affected by positive or negative adaptations to imposed functional demands. Read More

Orthop J Sports Med 2018 Nov 9;6(11):2325967118806295. Epub 2018 Nov 9.

Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India.

Background: Axillary nerve injury and suture cutout through the roof of the tunnel are potential complications of arthroscopic transosseous rotator cuff repair (ATORCR).

Purpose: To determine a safe angle of drilling for the bone tunnel during ATORCR such that the axillary nerve is not at risk. The thickness of the bone bridge over the tunnel for different angles of drilling was also determined. Read More

Orthop J Sports Med 2018 Nov 16;6(11):2325967118805731. Epub 2018 Nov 16.

Oklahoma State University Center for Health Sciences, Tulsa, Oklahoma, USA.

Background: We conducted a study of recommendations from the American Academy of Orthopaedic Surgeons (AAOS) guideline, "Optimizing the Management of Rotator Cuff Problems." Using these recommendations, we conducted searches of clinical trial registries and bibliographic databases to note the extent to which new research has been undertaken to address areas of deficiency.

Hypothesis: Newly conducted research regarding rotator cuff repair and injury is available that will fill knowledge gaps identified by the AAOS guideline. Read More

Orthop Clin North Am 2019 Jan;50(1):103-108

Department of Orthopaedics, MedStar Union Memorial Hospital, 3333 North Calvert Street, Suite 400, Baltimore, MD 21218, USA.

Healing rates after rotator cuff repair vary widely. New technologies seek to improve tendon to bone healing with the addition of platelet-rich plasma, stem cells, and biological and synthetic grafts. Platelet-rich plasma and mesenchymal stem cells are used to help create a favorable environment for tendon to bone healing, and grafts and scaffolds provide structural support for repair. Read More

J Back Musculoskelet Rehabil 2018 Nov 16. Epub 2018 Nov 16.

School of Physical Therapy and Rehabilitation, Pamukkale University, Denizli, Turkey.

Background: Strong core stabilization not only minimizes the load on the vertebral column, but also improves strength and endurance of peripheral joints, and enables the energy transfer to distal segments. Despite the current interest surrounding core stability, none of the studies investigated the effect of core stability on the formation of rotator cuff tear or healing after repair.

Objective: To determine the relationship between core stability and upper extremity functional performance in patients who underwent rotator cuff repair surgery and to compare those with healthy subjects of similar age. Read More

Arthroscopy 2019 Jan 22;35(1):32-37. Epub 2018 Nov 22.

Hospital Italiano de Buenos Aires, Buenos Aires City, Argentina.

Purpose: To evaluate return to sport, clinical outcomes, and complications in a series of athletes with painful partial-thickness rotator cuff tears treated with the arthroscopic in situ repair with a minimum 2-year follow-up.

Methods: Retrospective case series. Seventy-two patients who had undergone an arthroscopic in situ repair for partial-thickness rotator cuff tears were evaluated. Read More

Sci Rep 2018 Nov 19;8(1):17027. Epub 2018 Nov 19.

Departments of Clinical & Translational Science and Orthopedic Surgery, Creighton University School of Medicine, Omaha, NE, 68178, USA.

Mitochondrial function following rotator cuff tendon injury (RCI) influences the tendon healing. We examined the mitochondrial morphology and function under hypoxia in the shoulder tendon tissue from surgically-induced tenotomy-RCI rat model and cultured swine tenocytes. The tendon tissue was collected post-injury on 3-5 (Group-A), 10-12 (Group-B), and 22-24 (Group-C), days and the corresponding contralateral tendons were used as control for each group. Read More

Acta Clin Croat 2018 Jun;57(2):335-341

Department of Diagnostic and Interventional Radiology, Osijek University Hospital Center, Osijek, Croatia.

Objectives of the study were to observe supraspinatus muscle thickness in patients with supraspinatus tendon pathology using ultrasound (US) and examining inter- and intra-rater reliability, and to compare muscle thickness with cross-sectional area (CSA) and occupation ratio measured by both US and magnetic resonance imaging (MRI). The investigation was designed as a prospective cohort study. Two groups of patients were included in the study: 43 patients with tendon rupture and 44 patients without tendon rupture as a control group. Read More

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

Syst Rev 2018 Nov 13;7(1):187. Epub 2018 Nov 13.

Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK.

Background: Shoulder pain is a common problem in the general population and is responsible for prolonged periods of disability, loss of productivity, absence from work and inability to carry out household activities. Rotator cuff problems account for up to 70% of shoulder pain problems and are the third most prevalent musculoskeletal disorder after those occurring in the lower back and neck. Rotator cuff surgery has high failure rates (25-50% within 12 months), and as a result, there is a pressing need to improve the outcome of rotator cuff surgery. Read More

J Orthop Surg Res 2018 Nov 13;13(1):284. Epub 2018 Nov 13.

Department of Joint and Sport Medicine, Tianjin Union Medical Center, Jieyuan Road 190, Hongqiao District, Tianjin, 300121, People's Republic of China.

Background: Rotator cuff tear (RCT) is a common shoulder disorder in the elderly. Muscle atrophy, denervation and fatty infiltration exert secondary injuries on torn rotator cuff muscles. It has been reported that satellite cells (SCs) play roles in pathogenic process and regenerative capacity of human RCT via regulating of target genes. Read More

Am J Sports Med 2018 Dec 12;46(14):3511-3520. Epub 2018 Nov 12.

Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA.

Background:: Bone marrow aspirate is a primary source for cell-based therapies with increasing value in the world of orthopaedic surgery, especially in revision cases of tendon and ligament repairs. However, cells within peritendinous structures, such as the paratenon and surrounding bursa, contribute to the native tendon-healing response and offer promising cell populations for cell-based repair strategies. Therefore, the purpose of this study is to investigate the efficacy of cells derived from human subacromial bursa as compared with the current gold standard, bone marrow stromal cells (BMSCs), for tendon repairs in an established in vivo immunodeficient murine patellar tendon defect model. Read More

Phys Ther Sport 2019 Jan 30;35:23-28. Epub 2018 Oct 30.

Division of Biokinesiology and Physical Therapy, University of Southern California, 1540 E. Alcazar Street, CHP155, Los Angeles, CA, 90089, USA. Electronic address:

Objective: To characterize disabled swimmers in comparison to an able-bodied swimmers for (1) supraspinatus tendon thickness, (2) subacromial space and (3) occupation ratio.

Design: Cross-Sectional Study.

Setting: Research laboratory. Read More

BMJ Case Rep 2018 Nov 8;2018. Epub 2018 Nov 8.

Department of Trauma and Orthopaedics, Royal Lancaster Infirmary, Lancaster, UK.

Heterotopic ossification (HO) is the abnormal growth of extraskeletal bone. Joint involvement may result in chronic stiffness and pain causing considerable functional impairment and the inability to perform the activities of daily living. HO affecting the shoulder joint is rare and little is known about its clinical course or treatment. Read More