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Journal of Shoulder and Elbow Surgery

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https://www.readbyqxmd.com/read/28528016/the-influence-of-humeral-neck-shaft-angle-and-glenoid-lateralization-on-range-of-motion-in-reverse-shoulder-arthroplasty
#1
Birgit S Werner, Jean Chaoui, Gilles Walch
BACKGROUND: Recent developments in reverse shoulder arthroplasty (RSA) have focused on changes in several design-related parameters, including humeral component design, to allow for easier convertibility. Alterations in humeral inclination and offset on shoulder kinematics may have a relevant influence on postoperative outcome. This study used a virtual computer simulation to evaluate the influence of humeral neck shaft angle and glenoid lateralization on range of motion in onlay design RSA...
May 17, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28522075/retrospective-analysis-of-proximal-humeral-fracture-dislocations-managed-with-locked-plates
#2
Vivek Trikha, Vivek Singh, Buddhadeb Choudhury, Saubhik Das
BACKGROUND: Fracture-dislocation is the extreme variant of injury to the proximal humerus that occurs more commonly in young adults as a result of high-velocity trauma. We evaluated the functional and radiologic outcome of fixation of proximal humeral fracture-dislocations with locked plates. METHODS: This was a retrospective review of 33 proximal humeral fracture-dislocations in 29 patients with a mean age of 35 years (range, 19-60 years) treated by open reduction and internal fixation with locked plates between January 2009 and December 2013...
May 15, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28506491/mapping-of-glenoid-bone-loss-in-recurrent-anterior-shoulder-instability-is-there-a-particular-deficit-pattern
#3
Benjamin Bockmann, Arne Johannes Venjakob, Frank Reichwein, Marthe Hagenacker, Wolfgang Nebelung
BACKGROUND: Glenoid bone loss in recurrent anterior shoulder instability is a challenging problem for shoulder surgeons, and knowledge about the anatomy of glenoid deficits is scarce. In this study, we tried to evaluate the pattern of this pathology. METHODS: Our analysis included 44 shoulders from 44 patients with recurrent anterior shoulder instability accompanied by a clinically relevant glenoid bone loss. The defect size, the localization of the inferior defect edge, and the defect angle were measured, and osseous landmarks were identified...
May 11, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28506490/early-range-of-motion-exercise-in-pediatric-patients-with-olecranon-fractures-treated-with-tension-band-suture-with-double-loops-and-double-knots
#4
Tae Hun Kim, Doo-Hyung Lee, Kyeong Jin Han, Wan Sun Choi, Jae Ho Cho
BACKGROUND: Pediatric patients with olecranon fractures are uncommon. The tension band suture technique was introduced to reduce the burden of implant removal and other complications. However, to our knowledge, early range of motion (ROM) exercise has not been introduced in this population of patients. Double Vicryl loops and knots with 2 cross-pins are used to maintain the benefits of the tension band suture technique and to enhance fixation tensile strength. We believe that early ROM exercises could be achieved without nonunion or fixation failure...
May 11, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28506489/enhancement-of-rotator-cuff-tendon-bone-healing-with-fibroblast-growth-factor-2-impregnated-in-gelatin-hydrogel-sheets-in-a-rabbit-model
#5
Takuya Tokunaga, Tatsuki Karasugi, Hitoshi Arimura, Ryuji Yonemitsu, Hidetoshi Sakamoto, Junji Ide, Hiroshi Mizuta
BACKGROUND: Application of fibroblast growth factor 2 (FGF-2) may improve the healing response after rotator cuff (RC) surgical repair. This study aimed to determine whether FGF-2-impregnated gelatin hydrogel sheet (GHS) incorporation into the bony trough on the greater tuberosity facilitates healing after RC surgical repair in rabbits. METHODS: We assigned 120 adult male Japanese white rabbits treated with unilateral surgery for supraspinatus tendon repair into the following groups: suture-only group (suture); suture and GHS with phosphate-buffered saline (carrier); suture and GHS with 3 µg of FGF-2 (F3); and suture and GHS with 30 µg of FGF-2 (F30)...
May 11, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28495576/quantitative-assessment-of-fatty-infiltration-and-muscle-volume-of-the-rotator-cuff-muscles-using-3-dimensional-2-point-dixon-magnetic-resonance-imaging
#6
Noboru Matsumura, Sota Oguro, Shigeo Okuda, Masahiro Jinzaki, Morio Matsumoto, Masaya Nakamura, Takeo Nagura
BACKGROUND: In patients with rotator cuff tears, muscle degeneration is known to be a predictor of irreparable tears and poor outcomes after surgical repair. Fatty infiltration and volume of the whole muscles constituting the rotator cuff were quantitatively assessed using 3-dimensional 2-point Dixon magnetic resonance imaging. METHODS: Ten shoulders with a partial-thickness tear, 10 shoulders with an isolated supraspinatus tear, and 10 shoulders with a massive tear involving supraspinatus and infraspinatus were compared with 10 control shoulders after matching age and sex...
May 8, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28495575/the-relationship-between-the-incidence-of-adhesive-capsulitis-and-hemoglobin-a1c
#7
Justin H Chan, Bryant S Ho, Hasham M Alvi, Matthew D Saltzman, Guido Marra
BACKGROUND: Previous studies have shown no correlation between adhesive capsulitis and hemoglobin A1c (HbA1c). However, HbA1c is only a measure of short-term blood sugar control. We created a previously nonvalidated variable, cumulative HbA1c, that uses HbA1c values over time to estimate the total disease burden a single individual experiences over a period. In this study, we aimed to evaluate whether a correlation exists between cumulative HbA1c levels in diabetic patients and the prevalence of frozen shoulder...
May 8, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28495574/does-acromioplasty-result-in-favorable-clinical-and-radiologic-outcomes-in-the-management-of-chronic-subacromial-pain-syndrome-a-double-blinded-randomized-clinical-trial-with-9-to-14-years-follow-up
#8
Arjen Kolk, Bregje J W Thomassen, Hajo Hund, Pieter Bas de Witte, Hans-Erik Henkus, Willem G Wassenaar, Ewoud R A van Arkel, Rob G H H Nelissen
BACKGROUND: The treatment effect of acromioplasty for chronic subacromial pain syndrome (SAPS) on long-term shoulder function and rotator cuff deterioration has still to be determined. This study aimed to determine the long-term clinical and radiologic treatment effect of arthroscopic acromioplasty in patients with chronic SAPS. METHODS: In this double-blind, randomized clinical trial, 56 patients with chronic SAPS (median age, 47 years; age range, 31-60 years) were randomly allocated to arthroscopic bursectomy alone or to bursectomy combined with acromioplasty and were followed up for a median of 12 years...
May 8, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28495573/spatial-mapping-of-humeral-head-bone-density
#9
Hamidreza Alidousti, Joshua W Giles, Roger J H Emery, Jonathan Jeffers
BACKGROUND: Short-stem humeral replacements achieve fixation by anchoring to the metaphyseal trabecular bone. Fixing the implant in high-density bone can provide strong fixation and reduce the risk of loosening. However, there is a lack of data mapping the bone density distribution in the proximal humerus. The aim of the study was to investigate the bone density in proximal humerus. METHODS: Eight computed tomography scans of healthy cadaveric humeri were used to map bone density distribution in the humeral head...
May 8, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28483434/posterior-glenoid-bone-grafting-in-total-shoulder-arthroplasty-for-osteoarthritis-with-severe-posterior-glenoid-wear
#10
Gregory P Nicholson, Gregory L Cvetanovich, Allison J Rao, Patrick O'Donnell
BACKGROUND: Total shoulder arthroplasty (TSA) in cases with posterior wear can be addressed by eccentric reaming of the anterior glenoid or by augmenting the posterior glenoid with bone grafting or augmented glenoid implants. We report the results of TSA with posterior glenoid bone grafting (PGBG) with humeral head autograft in patients with shoulder osteoarthritis and severe posterior glenoid wear. METHODS: A retrospective review of cases from 2004 to 2014 revealed 34 patients...
May 5, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28483433/can-glenoid-wear-be-accurately-assessed-using-x-ray-imaging-evaluating-agreement-of-x-ray-and-magnetic-resonance-imaging-walch-classification
#11
Michaela Kopka, Mitchell Fourman, Ashish Soni, Andrew C Cordle, Albert Lin
BACKGROUND: The Walch classification is the most recognized means of assessing glenoid wear in preoperative planning for shoulder arthroplasty. This classification relies on advanced imaging, which is more expensive and less practical than plain radiographs. The purpose of this study was to determine whether the Walch classification could be accurately applied to x-ray images compared with magnetic resonance imaging (MRI) as the gold standard. We hypothesized that x-ray images cannot adequately replace advanced imaging in the evaluation of glenoid wear...
May 5, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28483432/reverse-shoulder-arthroplasty-in-patients-with-os-acromiale
#12
William R Aibinder, Bradley S Schoch, Robert H Cofield, John W Sperling, Joaquin Sánchez-Sotelo
BACKGROUND: Os acromiale has been reported in up to 15% of the general population. Reverse total shoulder arthroplasty (RTSA) increases deltoid tension, which could potentially lead to excessive stress on a pre-existent os acromiale. The purpose of this study was to determine the outcome and complications of primary RTSA in patients with radiographic evidence of an os acromiale. METHODS: Between 2005 and 2013, 25 shoulders underwent primary RTSA with an associated os acromiale, which was classified preacromion (3), mesoacromion (20), and meta-acromion (2)...
May 5, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28483431/anterior-deltoid-reeducation-for-irreparable-rotator-cuff-tears-revisited
#13
Edward H Yian, Jeffrey F Sodl, Emil Dionysian, Alberto G Schneeberger
BACKGROUND: A previous study introduced a method of conservative treatment of irreparable rotator cuff tears (RCTs) using a rehabilitation program (anterior deltoid reeducation [ADR]). The purposes of this study were to present our experience with ADR and to compare our results with those of the previous study. METHODS: Thirty consecutive elderly patients with irreparable RCTs were prospectively enrolled and taught how to perform the home-based ADR program for a period of 3 months...
May 5, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28483430/volumetric-evaluation-of-the-rotator-cuff-musculature-in-massive-rotator-cuff-tears-with-pseudoparalysis
#14
Yong Girl Rhee, Nam Su Cho, Jong Hoon Song, Jung Gwan Park, Tae Yong Kim
BACKGROUND: If the balance of the rotator cuff force couple is disrupted, pseudoparalysis may occur, but the exact mechanism remains unknown. This study investigated the effect of rotator cuff force couple disruption on active range of motion in massive rotator cuff tear (mRCT) by rotator cuff muscle volume analysis. METHODS: The study included 53 patients with irreparable mRCT: 22 in the nonpseudoparalysis group and 31 in the pseudoparalysis group. The volumes of the subscapularis (SBS), infraspinatus (ISP), and teres minor (TM) muscles were measured using magnetic resonance imaging (MRI), and the ratios of each muscle volume to the anatomic external rotator (aER) volume were calculated...
May 5, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28479258/triceps-sparing-extra-articular-step-cut-olecranon-osteotomy-for-distal-humeral-fractures-an-anatomic-study
#15
Matthias A Zumstein, Sumit Raniga, Remy Flueckiger, Lorenzo Campana, Beat K Moor
BACKGROUND: This anatomic study investigated the distal humeral articular surface exposure achievable through a triceps-sparing oblique extra-articular osteotomy of the olecranon with a step-cut modification compared with the anconeus flap transolecranon apex distal chevron osteotomy. In addition, the bone contact surface areas of the osteotomized surfaces after transolecranon and extra-articular osteotomies were compared. METHODS: Seven pairs of fresh adult cadaveric elbow joints were examined...
May 4, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28479257/liposomal-bupivacaine-versus-indwelling-interscalene-nerve-block-for-postoperative-pain-control-in-shoulder-arthroplasty-a-prospective-randomized-controlled-trial
#16
Jeffrey T Abildgaard, Keith T Lonergan, Stefan J Tolan, Michael J Kissenberth, Richard J Hawkins, Richard Washburn, Kyle J Adams, Catherine D Long, E Carlisle Shealy, Jay R Motley, John M Tokish
BACKGROUND: Pain management strategies following shoulder arthroplasty vary significantly. Liposomal bupivacaine (LB) is an extended-release delivery of a phospholipid bilayer encapsulating bupivacaine that can result in drug delivery up to 72 hours. Prior studies in lower extremity surgery demonstrated efficacy of LB in comparison to a single-shot peripheral nerve block; however, no study has investigated LB in a total shoulder arthroplasty population. Therefore, this study compared LB vs...
May 4, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28479256/a-practical-evidence-based-comprehensive-pec-physical-examination-for-diagnosing-pathology-of-the-long-head-of-the-biceps
#17
REVIEW
Samuel Rosas, Michael K Krill, Kelms Amoo-Achampong, KiHyun Kwon, Benedict U Nwachukwu, Frank McCormick
BACKGROUND: Clinical examination of the shoulder joint has gained attention as clinicians aim to use an evidence-based examination of the biceps tendon, with the desire for a proper diagnosis while minimizing costly imaging procedures. The purpose of this study is to create a decision tree analysis that enables the development of a clinical algorithm for diagnosing long head of biceps (LHB) pathology. METHODS: A literature review of Level I and II diagnostic studies was conducted to extract characteristics of clinical tests for LHB pathology through a systematic review of PubMed, Medline, Ovid, and Cochrane Review databases...
May 4, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28479255/benzoyl-peroxide-and-clindamycin-topical-skin-preparation-decreases-propionibacterium-acnes-colonization-in-shoulder-arthroscopy
#18
Hailey H Dizay, Diana G Lau, Wesley M Nottage
BACKGROUND: Propionibacterium acnes is a gram-positive anaerobe that can lead to devastating postoperative shoulder infections. The objective of this study was to investigate whether a benzoyl peroxide and clindamycin preoperative skin preparation reduces the incidence of P. acnes colonization during shoulder arthroscopy. METHODS: Sixty-five shoulder arthroscopy patients were prospectively enrolled. A skin culture specimen was taken at the preoperative visit from standard arthroscopic portal sites...
May 4, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28478902/effects-of-short-malunion-of-the-clavicle-on-in-vivo-scapular-kinematics
#19
DooSup Kim, DongWoo Lee, YoungHwan Jang, JunSeop Yeom, Scott A Banks
BACKGROUND: Short malunion of the clavicle after fracture can change scapular kinematics and alter clinical outcome. However, the effects of malunion on kinematics and outcomes remains poorly understood because there have been no in vivo studies measuring changes during active motion with malunion. This study aimed to measure and to compare in vivo 3-dimensional (3D) scapular kinematics between normal shoulders and shoulders with short malunion using 3D-2-dimensional model image registration techniques...
May 3, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28478901/three-dimensional-quantitative-analysis-of-humeral-head-and-glenoid-bone-defects-with-recurrent-glenohumeral-instability
#20
Noboru Matsumura, Satoshi Oki, Masateru Kitashiro, Mayu Minemoto, Takeru Ichikawa, Morio Matsumoto, Masaya Nakamura, Takeo Nagura
BACKGROUND: Although bone defects of the humeral head and glenoid could affect glenohumeral instability, bone loss has not been sufficiently evaluated. The purpose of this study was to quantify bone defects 3-dimensionally in cases with glenohumeral instability. METHODS: Three-dimensional surface models of bilateral proximal humeri and glenoids were reconstructed from computed tomography scans of 90 patients with symptomatic, unilateral, recurrent glenohumeral instability...
May 3, 2017: Journal of Shoulder and Elbow Surgery
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