Search Our Scientific Publications & Authors

J Am Acad Orthop Surg 2018 Dec 4. Epub 2018 Dec 4.

From the Department of Orthopaedic Surgery, University of Virginia, Charlottesville, VA.

Background: A few investigations exist which evaluate the influence of obstructive sleep apnea (OSA) on complications after arthroscopic rotator cuff repair.

Methods: A database was queried for patients undergoing rotator cuff repair with and without OSA and further subdivided into those with and without a billing code for a continuous positive airway pressure (CPAP) device. Thirty-day and 6-month adverse events were assessed. Read More

J Orthop Surg Res 2018 Dec 5;13(1):310. Epub 2018 Dec 5.

Department of Orthopedic Surgery, Kurume University Medical Center, 155-1 Kokubu-machi, Kurume, Fukuoka, 839-0863, Japan.

Background: To examine important factors that affect clinical outcomes following arthroscopic rotator cuff repair (ARCR).

Methods: Among 163 patients who underwent ARCR, we included 71 shoulders in 71 patients whose progress was monitored for > 2 years, postoperatively. We divided the patients into groups A (scores ≥ 83 points, 59 patients) and B (scores < 83 points, 12 patients) using the Japanese Orthopedic Association (JOA) score at 24 months. Read More

J Microbiol Biotechnol 2018 Nov 28. Epub 2018 Nov 28.

Department of Pathology, Daejeon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 64, Daeheung-ro, Jung-gu, Daejeon, 34943, Republic of Korea.

Corticosteroids are commonly used for pain control in rotator cuff tear. Deregulated NF-κB activation is a hallmark of chronic inflammatory diseases and has been responsible for the pathogenesis of rotator cuff tear. The purpose of this study was to examine the exact effect of DEXA on NF-κB signaling in rotator cuff tear. Read More

J Back Musculoskelet Rehabil 2018 Nov 23. Epub 2018 Nov 23.

Department of Rehabilitation Medicine, Daegu Veterans Health Service Medical Center, Daegu, Korea.

Background And Objective: Calcific tendinitis is commonly found in the rotator cuff; however, it is very rare in the long biceps tendon (LBT). Furthermore, calcific tendinitis involving the LBT in the hemiplegic shoulder after a stroke has not been previously reported.

Materials And Method: We present a case of a 63-year-old man who suffers from a stroke and atypical calcific tendinitis involving the LBT as a rare cause of hemiplegic shoulder pain. Read More

Orthop J Sports Med 2018 Nov 27;6(11):2325967118808242. Epub 2018 Nov 27.

Instituto de Engenharia de Sistemas e Computadores-Investigação e Desenvolvimento, Lisbon, Portugal.

Background: Painful dysfunctional shoulders with irreparable rotator cuff tears (IRCTs) in active patients are a challenge. Arthroscopic superior capsular reconstruction (ASCR) is a new treatment option originally described using a fascia lata autograft harvested through an open approach. However, concerns about donor site morbidity have discouraged surgeons from using this type of graft. Read More

J Shoulder Elbow Surg 2018 Nov 29. Epub 2018 Nov 29.

Department of Orthopaedic Surgery, Medical College of Wisconsin, Milwaukee, WI, USA. Electronic address:

Background: Recent orthopedic research has questioned the effect of opioid use on surgical outcomes. This study investigated this in the context of arthroscopic rotator cuff repair. We hypothesized that preoperative opioid use would be associated with inferior outcomes and greater postoperative opioid requirements. Read More

J Shoulder Elbow Surg 2018 Nov 30. Epub 2018 Nov 30.

Shoulder & Elbow Clinic, Department of Orthopaedic Surgery, College of Medicine, Kyung Hee University, Seoul, Republic of Korea. Electronic address:

Hypothesis: We hypothesized that a new method considering the humeral head would distinguish rotator cuff tears (RCTs) and osteoarthritis (OA) better than the critical shoulder angle (CSA).

Methods: A total of 1011 patients were tested in this study and divided into 4 groups: those with RCTs (n = 493), those with OA (n = 73), those with anterior instability (n = 361), and those with adhesive capsulitis (n = 84). The CSA and new radiologic parameters including the humeral head were measured in the true anterior-to-posterior view: the Y angle connecting the lower end of the glenoid (LG), the center of the humeral head (CH), and the upper end of the glenoid (UG); the G angle connecting UG, CH, and the lateral tip of the acromion; the YG angle connecting LG, CH, and the lateral tip of the acromion; and the R angle connecting UG, LG, and CH. Read More

J Orthop Sports Phys Ther 2018 Nov 30:1-43. Epub 2018 Nov 30.

Faculty of Medicine, University of Sherbrooke, Sherbrooke (QC), Canada.

Study Design: Single-blind, randomized controlled trial.

Background: Treatments for rotator cuff (RC) tendinopathy include RC muscle strengthening to promote better muscle recruitment in order to minimize subacromial narrowing during active movement. Glenohumeral adductors recruitment has also been shown to prevent such narrowing in asymptomatic individuals; therefore, adding glenohumeral adductor coactivation during RC strengthening could enhance the efficacy of RC strengthening. Read More

Clin Orthop Relat Res 2018 Nov 27. Epub 2018 Nov 27.

E. Rath, Orthopedic Division, Tel Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.

J Biomech 2018 Nov 14. 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

Arthroscopy 2018 Dec;34(12):3175-3176

Although the exact function of the subacromial bursa as it relates to rotator cuff repair is still debatable, most surgeons would agree that the more invasive the procedure, the more likely there will be scarring and/or adhesions, which can lead to decreased motion. So, when performing subacromial bursectomy during rotator cuff repair, "Observe due measure, moderation is best in all things [subacromial]." Read More

Arthroscopy 2018 Dec;34(12):3157-3158

Delamination of rotator cuff tears presents a challenge to shoulder arthroscopists. Tear pattern recognition and an understanding of anatomy as it relates to the superior capsule guide treatment strategies. The key to management of a delaminated rotator cuff tear is to recognize differential retraction of respective layers. Read More

Opt Lett 2018 Dec;43(23):5861-5864

In this Letter, a novel open-loop fiber-optic gyroscope configuration with a double sensitivity is proposed. By employing a polarization-maintaining Faraday rotator mirror and a polarization beamsplitter/combiner, light waves propagate twice along the same fiber coil in two orthonormal polarization directions. The reciprocity of the configuration has been verified in theory. 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

J Belg Soc Radiol 2017 Dec 16;101(Suppl 2). Epub 2017 Dec 16.

University Hospital Brussels, BE.

The shoulder joint is functionally and structurally complex and is composed of bone, hyaline cartilage, labrum, ligaments, capsule, tendons and muscles. It links the trunk to the upper limb and plays an important biomechanical role in daily activities. Indications for imaging of the shoulder have considerably increased in the last few years. Read More

BMC Musculoskelet Disord 2018 Nov 30;19(1):422. Epub 2018 Nov 30.

Julius Wolff Institut, Center for Musculoskeletal Surgery, Charité-Universitaetsmedizin, Augustenburger Platz 1, 13353, Berlin, Germany.

Background: Platelet rich plasma (PRP) is widely used in rotator cuff repairs but its effect on the healing process is unclear. Several cell culture studies on the effect of allogenic PRP have reported promising results but are not transferable to clinical practice. The aim of the present study is to assess the possible effect of autologous PRP on rotator cuff tendon cells. Read More

JBJS Case Connect 2018 Nov 28. Epub 2018 Nov 28.

Centro Hospitalar de Lisboa Ocidental, EPE, Lisbon, Portugal.

Case: An active elderly patient with bilateral chronic rotator cuff tear underwent a reverse total shoulder arthroplasty (RTSA) on the right shoulder and an arthroscopic superior capsular reconstruction (ASCR) with a fascia lata autograft on the left shoulder. To our knowledge, this is the first reported case that compares these 2 techniques for irreparable rotator cuff tears in the same patient.

Conclusion: The patient had very good midterm (2 and 8 years of follow-up) functional outcomes with both treatment options. Read More

Am J Sports Med 2018 Nov 28:363546518810763. Epub 2018 Nov 28.

Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea.

Background:: Scoring systems integrating possible prognostic factors and predicting rotator cuff healing after surgical repair could provide valuable information for clinical practice.

Purpose:: To determine the prognostic factors predictive of rotator cuff healing after surgical repair and to integrate these factors into a scoring system.

Study Design:: Case-control study; Level of evidence, 3. Read More

J Biomed Mater Res B Appl Biomater 2018 Nov 28. Epub 2018 Nov 28.

Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio.

Despite advancements in surgical techniques and materials for rotator cuff repair procedures, primary repair failures remain common. This study examines the use of electrochemically aligned collagen (ELAC) threads woven into biotextile scaffolds as grafts to repair critical infraspinatus tendon defects in New Zealand White rabbits. Three surgical treatment groups were evaluated: rabbits undergoing direct repair as operative controls, rabbits receiving ELAC scaffolds alone, and rabbits treated with mesenchymal stem cell (MSC)-seeded ELAC scaffolds. 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

Am J Sports Med 2018 Nov 28:363546518810517. Epub 2018 Nov 28.

Department of Orthopaedic Surgery, Myongji Hospital, Hanyang University, College of Medicine, Goyang, Republic of Korea.

Background:: There is a lack of knowledge about the changes in perianchor cysts over time and the factors related to perianchor cysts.

Purpose:: To evaluate the changes in perianchor cyst formation and anchor absorption over time after arthroscopic rotator cuff repair with a biocomposite suture anchor and to evaluate the factors affecting perianchor cyst persistence and their relationship with patient outcomes.

Study Design:: Case-control study; Level of evidence, 3. 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

Am J Sports Med 2018 Nov 27:363546518810508. Epub 2018 Nov 27.

Department of Orthopaedics and Rehabilitation, School of Medicine, Yale University, New Haven, Connecticut, USA.

Background:: The Patient-Reported Outcomes Measurement Information System (PROMIS) Global-10 was recently developed to assess physical and mental health and provide an estimated EuroQol-5 Dimension (EQ-5D) score. This instrument needs to be validated for specific patient cohorts such as those with rotator cuff pathology.

Hypothesis:: There is moderate to high correlation between the PROMIS Global-10 and legacy patient-reported outcome measures; PROMIS Global-10 will not show ceiling effects; and estimated EQ-5D scores will show good correlation and low variance with actual EQ-5D scores. Read More

Am J Orthop (Belle Mead NJ) 2018 Oct;47(10)

2801 K St., #330, Sacramento, CA 95816, USA. Email:

Partial articular-sided supraspinatus tendon avulsion (PASTA) tears are a common clinical problem that can require surgical intervention to reduce patient symptoms. Currently, no consensus has been reached regarding the optimal repair technique. The PASTA Bridge technique was developed by the senior author to address these types of lesions. 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 J Sports Med 2018 Nov 7;6(11):2325967118805385. Epub 2018 Nov 7.

Department of Orthopedics, University of Colorado School of Medicine, Aurora, Colorado, USA.

Massive, irreparable rotator cuff tears (MIRCTs) provide a significant dilemma for orthopaedic surgeons. One treatment option for MIRCTs is reverse total shoulder arthroplasty. However, other methods of treating these massive tears have been developed. Read More

World J Orthop 2018 Nov 18;9(11):245-254. Epub 2018 Nov 18.

Department of Orthopedic Surgery, New York Presbyterian/Columbia University Medical Center, New York, NY 10032, United States.

Posterior instability of the shoulder is a rare condition and represents about 10% of shoulder instability. It has become more frequently recognized in the last year, even though it is more difficult to diagnose than anterior shoulder instability. As this form of shoulder pathology is somewhat rare, biomechanical knowledge is limited. 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 Dance Med Sci 2018 Dec;22(4):233-237

The Micheli Center for Sports Injury Prevention, Waltham, Massachusetts; Division of Sports Medicine, Department of Orthopaedics, Boston Children's Hospital, Boston, Massachusetts; and Department of Orthopaedic Surgery, Harvard Medical School, Boston, Massachusetts.

A 14-year-old female ballet dancer sustained an injury during a routine ballet movement that was diagnosed as an ischial tuberosity avulsion fracture. This diagnosis was complicated by extensive soft tissue injury to the hamstrings, adductors, and external rotator musculature. Although uncommon, the potential for this injury should be uniformly considered in adolescent dancers due to the unique stresses in ballet training and the added risk of growth spurts during this stage of development. Read More

JBJS Essent Surg Tech 2015 Sep 12;5(3):e15. Epub 2015 Aug 12.

Department of Traumatology and Orthopaedics, Stadtspital Waid, Tieche Strasse 99, 8037 Zurich, Switzerland. E-mail address for M. Dietrich:

Introduction: We describe the surgical technique for open reduction and internal fixation (ORIF) of proximal humeral fractures with a locking plate.

Step 1 Preoperative Planning: To choose the right candidate, obtain a full understanding of the patient's fracture pattern, activity level and demands, and bone quality; be aware of predictors of complications and poor outcomes.

Step 2 Patient Positioning: Place the patient in the beach-chair position with the arm draped free or in a hydraulic device with good access for the image intensifier. Read More

JBJS Essent Surg Tech 2015 Sep 22;5(3):e14. Epub 2015 Jul 22.

Department of Orthopedic Surgery, Seoul St. Mary's Hospital, The Catholic University of Korea, 505 Banpo-dong, Seocho-gu, Seoul 137-701, South Korea. E-mail address for Y-S. Kim: E-mail address for H-J. Lee:

Introduction: Among many treatments for shoulder stiffness, which is a common debilitating condition, arthroscopic capsular release is an effective surgical method for patients who have not responded to conservative treatment, as it provides visual control of the capsular release with a lower risk of potential traumatic damage than manipulation under anesthesia.

Step 1 Position The Patient: Place the patient either in the lateral decubitus position or in the beach-chair position, depending on one's preference.

Step 2 Portal Placement: Create a standard posterior viewing portal, an anterior portal, and a lateral portal for approaching the glenohumeral joint and the subacromial space. 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 2018 Nov 22. Epub 2018 Nov 22.

Department of Orthopedic Surgery, Singapore General Hospital, Singapore.

Purpose: To determine the threshold scores for the Constant-Murley score (CMS); University of California, Los Angeles (UCLA) shoulder score; and Oxford Shoulder Score (OSS) that determine treatment success after arthroscopic rotator cuff (RC) repair.

Methods: Patients who underwent unilateral arthroscopic double-row RC repair by a single surgeon between 2010 and 2015 were prospectively followed up and assessed preoperatively and at 6, 12, and 24 months postoperatively. Perceived pain was measured with a visual analog scale, and functional outcome was assessed by the CMS, UCLA score, and OSS. Read More

Arthroscopy 2018 Nov 22. 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

Arthroscopy 2018 Nov 22. Epub 2018 Nov 22.

Department of Orthopedic Surgery, University of Virginia, Charlottesville, Virginia, U.S.A.. Electronic address:

Purpose: To identify any dose-dependent association between the use of subacromial corticosteroid injections within a year before rotator cuff repair (RCR) and subsequent need for revision rotator cuff surgery.

Methods: Two large administrative databases were queried for patients undergoing arthroscopic RCR. A minimum of 1 year of preoperative database exposure and 2 years of postoperative database follow-up were required for inclusion. Read More

Arthroscopy 2018 Nov 22. Epub 2018 Nov 22.

Department of Orthopaedic Surgery, Beaumont Health System, U.S.A.

Purpose: To examine the cost metrics and profitability of rotator cuff repairs (RCRs) in a large health care system.

Methods: A retrospective study was performed using value analysis team data from 2 hospitals within a large metropolitan health system from 2010 to 2014. Cost and profit metrics were collected and compared against surgeon volume, surgeon subspecialty training, implant costs, Current Procedural Terminology (CPT) coding, length of stay, and hospital site. Read More

Arthroscopy 2018 Nov 21. Epub 2018 Nov 21.

Department of Surgery, Section of Orthopedic Surgery, McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, Alberta, Canada.

Purpose: To systematically review the literature and determine the rate of radiographic tear progression of nonoperatively treated full-thickness rotator cuff tears.

Methods: The PubMed, Embase, and Cochrane Library databases were systematically reviewed to identify all articles related to nonoperatively treated rotator cuff tears. English-language studies of Level I through IV evidence examining chronic, full-thickness rotator cuff tears in adults were included. Read More

J Shoulder Elbow Surg 2018 Nov 20. Epub 2018 Nov 20.

Department of Orthopaedic Surgery, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan.

Background: We performed arthroscopic rotator cuff repair (ARCR) combined with miniopen supraspinatus and infraspinatus muscle advancement for massive rotator cuff tears (RCTs) to decrease tension at the repair site with the goal of reduction of the failure rate. We evaluated the clinical outcomes and failure rate after this procedure.

Methods: This study included 47 patients diagnosed with chronic massive RCTs between October 2010 and March 2015. Read More

BMC Musculoskelet Disord 2018 Nov 23;19(1):408. Epub 2018 Nov 23.

Department of Occupational Science and Technology, University of Wisconsin-Milwaukee, 161 W Wisconsin Ave, Suite 6000, Milwaukee, WI, 53203-2602, USA.

Background: Glenohumeral pain and rotator cuff tendinopathy (RCT) are common musculoskeletal complaints with high prevalence among working populations. The primary proposed pathophysiologic mechanisms are sub-acromial RC tendon impingement and reduced tendon blood flow. Some sleep postures may increase subacromial pressure, potentially contributing to these postulated mechanisms. Read More

Opt Express 2018 Sep;26(19):25408-25425

Composite waveplates (CWs) consisting of multiple single waveplates are basic polarization elements and widely used to manipulate the polarized light in optical systems, and their performances affect the final accuracy and precision significantly. This research proposes a method for the comprehensive characterization of an arbitrary CW based on spectroscopic Mueller matrix polarimetry. An analytical model is established to describe a general CW by extending Jones' equivalent theorem with Mueller matrix calculus. Read More

J Shoulder Elbow Surg 2018 Nov 19. Epub 2018 Nov 19.

Biomechanics Laboratory, Department of Mechanical Engineering, Istanbul Technical University, Taksim, Istanbul, Turkey.

Background: In the treatment of irreparable rotary cuff (RC) tears, the superior capsule of the shoulder is reconstructed using tensor fascia lata (TFL) or several allografts to prevent progressive joint degeneration. This study compared the healing qualities of acellular human dermal graft (HDG) and the TFL autograft in superior capsule reconstruction (SCR) from biomechanical and histologic perspectives.

Methods: Chronic retracted RC tear models were created bilaterally in 9 rabbits, and 7 rabbits with intact RC were used as a control group. Read More

J Orthop Surg Res 2018 Nov 22;13(1):297. Epub 2018 Nov 22.

Department of Orthopaedic Surgery, Kurume University Hospital, 67 Asahi-machi, Kurume, Japan.

Purpose: To compare arthroscopic suture bridge (SB) techniques with medial tying to those without tying, considering clinical and structural outcomes.

Methods: We included 124 patients with rotator cuff tears after arthroscopic rotator cuff repair (ARCR). Fifty-three patients with clinical and structural evaluations 3, 12, and 24 months postoperatively were included and divided into 29 patients with medial tying (WMT group) and 24 without tying (WOMT group). Read More

SICOT J 2018 22;4:49. Epub 2018 Nov 22.

Department of Orthopedic Surgery, Horsens Regional Hospital, Sundvej 30, Horsens, Denmark.

Introduction: Pain can be severe during the first days after arthroscopic surgery, and acute pain is an important outcome in clinical trials of surgical technique or anaesthetic strategy. A standardized, validated method of assessing acute postoperative pain would improve the quality of clinical studies, and facilitate systematic reviews and meta-analyses. A step on the way towards this standard is to investigate the methods most commonly used in recent literature. Read More

Am J Phys Med Rehabil 2018 Nov 17. Epub 2018 Nov 17.

From the Kessler Foundation, West Orange, NJ (Hogaboom); Department of Physical Medicine and Rehabilitation, Rutgers New Jersey Medical School, Newark, NJ (Hogaboom); Human Engineering Research Laboratories, VA Pittsburgh Healthcare System, Pittsburgh, PA (Worobey, Boninger); Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, PA (Onishi, Worobey, Boninger); Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA (Onishi), Department of Rehabilitation Science and Technology, University of Pittsburgh, Pittsburgh, PA (Boninger).

Microdialysis quantifies in vivo soft-tissue biochemical concentrations via passive diffusion of interstitial molecules through a porous membrane into a dialysate. The purpose of this pilot study was to evaluate a technique to measure inflammatory cytokines associated with rotator cuff tendinopathy by inserting a microdialysis catheter into the posterior glenohumeral joint (GHJ). The technique was tested in a convenience sample of six pain-free, able-bodied Veterans. Read More

Acta Orthop Belg 2018 Mar;84(1):54-61

The purpose of this study was to perform a systematic review and meta-analysis including all available randomized controlled trials to determine the role of acromioplasty in arthroscopic repair of full-thickness rotator cuff tears. A literature search was conducted in PubMed, Embase, Cochrane, and Web of Science. All randomized and quasi-randomized controlled trials evaluating the outcomes of arthroscopic repair of full-thickness rotator cuff tears with or without acromioplasty were included in our meta-analysis. Read More

J Orthop Res 2018 Nov 20. Epub 2018 Nov 20.

Wallace H. Coulter Department of Biomedical Engineering.

The etiology of joint tissue degeneration following rotator cuff tear remains unclear. Thus, the purpose of this study was to understand the timeline of protease activity in the soft tissues of the shoulder (tendon, muscle, and cartilage) that may lead to down-stream degeneration following rotator cuff tear. A well-established rat model involving suprascapular nerve denervation and supraspinatus/infraspinatus tendon transection was employed. Read More