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https://www.readbyqxmd.com/read/29349960/-anterolateral-acromial-approach-for-the-treatment-of-proximal-humerus-in-2-or-3-part-fractures-a-case-control-study
#1
Zheng-Xin Song, Yan Liu, Ying-Fu Mao, Bing-Yan Li, Li-Jin Wei, Yun Tian
OBJECTIVE: To explore the clinical curative effect of anterolateral acromial approach in treating two-and three-part of proximal humeral fractures. METHODS: Forty-two patients of proximal humeral fractures from January 2010 to June 2014 were analyzed retrospectively, including 23 males and 19 females with a mean age of 61.5 years old ranging from 40 to 76 years old. Among them, 22 cases were treated with anterolateral acromial approach and 20 cases were treated with deltopectoral approach...
March 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29337027/an-assessment-of-proximal-humerus-density-with-reference-to-stemless-implants
#2
Jacob M Reeves, George S Athwal, James A Johnson
BACKGROUND: Shoulder arthroplasty humeral components have undergone several generational changes, with systems now offering shorter stems and stemless options. The stemless humeral implants obtain fixation in the trabecular bone of the proximal humerus through elaborate fixation features. To optimize implant design, the regional variations in bone density within the proximal humerus should be determined. As such, the purpose of this computed tomography-based study was to map the regional variations in bone density of the proximal humerus...
January 11, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29322887/functional-outcome-after-proximal-humerus-fracture-fixation-understanding-the-risk-factors
#3
A Christiano, P Pean, S Konda, Z K Egol
The purpose is to identify risk factors of functional outcome following proximal humerus open reduction and internal fixation. Patients treated for proximal humerus fractures with open reduction and internal fixation were enrolled in a prospective data registry. Patients were evaluated for function using the Disability of the Arm, Shoulder and Hand score for 12 months and as available beyond 12 months. Univariate analyses were conducted to identify variables associated with functional outcome. Significant variables were included in a multivariate regression predicting functional outcome...
March 2017: Acta Orthopaedica Belgica
https://www.readbyqxmd.com/read/29314242/co-morbidities-only-account-for-a-small-proportion-of-excess-mortality-after-fracture-a-record-linkage-study-of-individual-fracture-types
#4
Weiwen Chen, Judy M Simpson, Lyn M March, Fiona M Blyth, Dana Bliuc, Thach Tran, Tuan V Nguyen, John A Eisman, Jacqueline R Center
BACKGROUND: Non-hip non-vertebral fractures (NHNV) constitute the majority of osteoporotic fractures but few studies have examined the association between these fractures, co-morbidity and mortality. OBJECTIVE: To examine the relationship between individual non-hip non-vertebral fractures, co-morbidities and mortality. METHODS: Prospective population-based cohort of 267,043 subjects (45 and Up Study, Australia) had baseline questionnaires linked to hospital administrative and all-cause mortality data from 2006 - 2013...
January 4, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29310407/shoulder-dislocation-combined-with-proximal-humerus-fracture-in-children-a-case-report-and-literature-review
#5
Sheng Jin, Haiqing Cai, Yunlan Xu
RATIONALE: Proximal humerus fracture occuring simultaneously with dislocation of a shoulder in children is extremely rare, with only a few recent reports of on such cases having been reported. PATIENT CONCERNS: A 6-year-old girl fell from a ladder and landed on her dominant right arm with pain in the right shoulder and unable to perform movements; her shoulder did not allow for passive movements as well. DIAGNOSES: Proximal humerus fracture combined with shoulder dislocation...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29305100/clinical-outcomes-of-minimally-invasive-open-reduction-and-internal-fixation-by-screw-and-washer-for-displaced-greater-tuberosity-fracture-of-the-humerus
#6
Tae-Hwan Yoon, Chong-Hyuk Choi, Yun-Rak Choi, Jong-Taek Oh, Yong-Min Chun
BACKGROUND: The purpose of this study was to investigate clinical and radiologic outcomes of open reduction and internal fixation with a screw and washer for a displaced greater tuberosity fracture of the proximal humerus through a small incision. METHODS: We retrospectively reviewed 29 patients who underwent open reduction and internal fixation with a screw and washer for a greater tuberosity fracture of the proximal humerus. After surgery, the patients were immobilized in a brace for 4 weeks...
January 3, 2018: Journal of Shoulder and Elbow Surgery
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
#7
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/29290608/an-analysis-of-proximal-humerus-morphology-with-special-interest-in-stemless-shoulder-arthroplasty
#8
Jacob M Reeves, James A Johnson, George S Athwal
BACKGROUND: Shoulder arthroplasty evolution has resulted in the shortening of traditional stemmed humeral components. Newer stemless implants rely on structures that maintain fixation in the metaphyseal region of the proximal humerus. Whereas the overall morphology of the proximal humerus is well understood, the advent of stemless implants requires that additional geometric measures be assessed. This study's purpose was to introduce new anatomic measures to assist with the design of stemless implants...
December 29, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29287950/subpectoral-biceps-tenodesis-with-peek-interference-screw-a-biomechanical-analysis-of-humeral-fracture-risk
#9
Christopher R Mellano, Rachel M Frank, Jason J Shin, Akshay Jain, William A Zuke, Randy Mascarenhas, Elizabeth Shewman, Brian J Cole, Anthony A Romeo, Nikhil N Verma, Brian Forsythe
PURPOSE: To quantify the torsional load to fracture for subpectoral biceps tenodesis with interference screw fixation. METHODS: We randomized 28 specimens from 14 matched-pair full-length humeri (mean age, 55.3 years) into 3 groups: (1) empty ream group (ERG), (2) screw-only group (SOG), and (3) screw-plus-biceps tendon group (SBG). In each group, 1 humerus of each matched pair was prepared according to group allocation and the contralateral humerus remained intact as a control...
December 26, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29287662/the-influence-of-local-bone-quality-on-fracture-pattern-in-proximal-humerus-fractures
#10
Ruben A Mazzucchelli, Katharina Jenny, Vilijam Zdravkovic, Johannes B Erhardt, Bernhard Jost, Christian Spross
INTRODUCTION: Bone mineral density and fracture morphology are widely discussed and relevant factors when considering the different treatment options for proximal humerus fractures. It was the aim of this study to investigate the influence of local bone quality on fracture patterns of the Neer classification as well as on fracture impaction angle in these injuries. MATERIALS AND METHODS: All acute, isolated and non-pathological proximal humerus fractures admitted to our emergency department were included...
December 26, 2017: Injury
https://www.readbyqxmd.com/read/29283018/a-practical-clinical-kinematic-model-for-the-upper-limbs
#11
Jonathan J Noble, Nicola Rd Fry, Carly R Bingham, Rebecca H East, Adam P Shortland
A novel clinically practical upper limb model is introduced that has been developed through clinical use in children and adults with neurological conditions to guide surgery to the elbow and wrist. This model has a minimal marker set, minimal virtual markers, and no functional joint centres to minimise the demands on the patient and duration of data collection. The model calculates forearm supination independently from the humerus segment, eliminating any errors introduced by poor modelling of the shoulder joint centre...
December 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29276733/decisive-differences-in-the-bone-repair-processes-of-the-metaphysis-and-diaphysis-in-young-mice
#12
Satoshi Inoue, Hirotada Otsuka, Jiro Takito, Masanori Nakamura
Fractures are common traumatic injuries that mainly occur in the metaphyses of long bones such as the proximal humerus, distal radius, and proximal femur. However, most studies of fracture repair processes have focused on the diaphyseal region. In this study, we compared the bone repair processes of the metaphysis and the diaphysis of the mouse tibia. Bone apertures were formed in the tibial metaphysis and diaphysis. At indicated times after surgery, samples were collected, and the healing process was investigated using micro-computed tomography, as well as histological, immunohistochemical, and mRNA expression analyses...
June 2018: Bone Reports
https://www.readbyqxmd.com/read/29276536/establishing-the-appropriate-position-of-proximal-humerus-locking-plates-a-cadaveric-study-of-five-plating-systems-and-their-anatomic-reference-measurements
#13
Matthew A Butler, Aakash Chauhan, Gregory A Merrell, Jeffrey A Greenberg
Background: The present study aimed to determine anatomic references for the placement of five proximal humerus locking plates. Methods: Five proximal humerus locking-plate systems were placed on six human shoulder cadavers. Plates were positioned by fluoroscopic confirmation so that the inferior oblique screw was within 5 mm of the inferomedial cortex. Plate position was measured using the superior border of the pectoralis major tendon (PMT) to the bottom of the first slotted or nonlocking hole and top of the plate to the top of the greater tuberosity...
January 2018: Shoulder & Elbow
https://www.readbyqxmd.com/read/29274903/early-versus-late-repair-of-rotator-cuff-tears-in-rats
#14
Leonardo Cavinatto, Eduardo Angeli Malavolta, Cesar Augusto Martins Pereira, Manuela Miranda-Rodrigues, Luiza Campos Moreira Silva, Cecilia Helena Gouveia, Cesar de Cesar Netto, Rames Mattar Junior, Arnaldo Amado Fereira Neto
BACKGROUND: In the event of a traumatic rotator cuff tear, patients are routinely advised that early surgical intervention produces an optimal repair, despite a lack of direct evidence to support this recommendation. To address this knowledge gap, massive rotator cuff tears in rats were assessed by biomechanical and bone morphometric analyses after early or late repair. METHODS: Combined supraspinatus and infraspinatus tendon tears of the left shoulder were created in 21 adult Wistar rats, which were divided into 2 groups...
December 21, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29261703/transhumeral-loading-during-advanced-upper-extremity-activities-of-daily-living
#15
Alex J Drew, Morgan T Izykowski, Kent N Bachus, Heath B Henninger, K Bo Foreman
Percutaneous osseointegrated (OI) implants for direct skeletal attachment of upper extremity prosthetics represent an alternative to traditional socket suspension that may yield improved patient function and satisfaction. This is especially true in high-level, transhumeral amputees where prosthetic fitting is challenging and abandonment rates remain high. However, maintaining mechanical integrity of the bone-implant interface is crucial for safe clinical introduction of this technology. The collection of population data on the transhumeral loading environment will aid in the design of compliance and overload protection devices that mitigate the risk of periprosthetic fracture...
2017: PloS One
https://www.readbyqxmd.com/read/29258687/analysis-of-mortality-and-fixation-failure-in-geriatric-fractures-using-quantitative-computed-tomography
#16
Tyler S Pidgeon, Joey P Johnson, Matthew E Deren, Andrew R Evans, Roman A Hayda
OBJECTIVES: While osteoporosis has been shown to be a contributing factor in low energy fractures in the elderly, limited data exists regarding the correlation of bone mineral density (BMD) and T-Scores to mortality and failure of fracture fixation. This study seeks to determine the relationship between femoral neck BMD in elderly patients with typical geriatric fractures and mortality and fracture fixation failure using Quantitative Computed Tomography (QCT). MATERIALS AND METHODS: Patients over the age of 65 who sustained fractures of the proximal humerus, distal radius, pelvic ring, acetabulum, hip, proximal tibia, and ankle who also underwent a CT scan that included an uninjured femoral neck were retrospectively reviewed...
December 15, 2017: Injury
https://www.readbyqxmd.com/read/29248483/dose-dependent-resorption-of-allograft-by-rhbmp-2-uncompensated-by-new-bone-formation-a-canine-study-with-implants-and-zoledronate
#17
Rasmus Cleemann, Joan E Bechtold, Mette Sorensen, Kjeld Soballe, Jorgen Baas
BACKGROUND: Impacted bone allograft is used to restore lost bone in total joint arthroplasties. Bone morphogenetic proteins (BMPs) can induce new bone formation to improve allograft incorporation, but they simultaneously invoke a seemingly dose-dependent allograft resorption mediated by osteoclasts. Bisphosphonates effectively inhibit osteoclast activity. Predicting allograft resorption when augmented with bone morphogenetic protein 2 (BMP-2), we intended to investigate whether a balanced bone metabolism was achievable within a range of BMP-2 doses with systemic zoledronate treatment...
November 16, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29246482/percutaneous-fixation-of-valgus-displaced-fracture-of-the-proximal-humerus-using-a-single-screw
#18
S Gunst, G Walch, L Nové-Josserand
Valgus-impacted proximal humerus fracture is a classic but rare entity in shoulder traumatology. Surgical treatment is controversial, with increasing use of minimally invasive techniques. Our technique uses a minimally invasive approach under fluoroscopic control. Raising the humeral head to reduce the valgus enables spontaneous and well-positioned reduction of the tuberosities and screw fixation between the greater tuberosity and the humeral shaft. Indications comprise valgus-impacted fracture without comminution of the medial epiphyseal-metaphyseal hinge or greater tuberosity; the rotator cuff contributes to reduction and must be intact...
December 12, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29242794/bilateral-anterior-shoulder-dislocation-in-the-elderly-a-case-report-and-review-of-the-literature
#19
Kristian Nikolaus Schneider, Benedikt Schliemann, Salomon M Manz, Pranai K Buddhdev, Georg Ahlbäumeri
Introduction: Bilateral shoulder dislocations are rare and a diagnostic as well as a therapeutic challenge. Case Report: We report the case of a 67-year-old male who fell while skiing and suffered a bilateral anterior shoulder dislocation associated with a four-part proximal humerus fracture on the left side and an osseous avulsion of the rotator cuff, a Pulley lesion, and a Hill-Sachs lesion on the right side. In addition, we searched the PubMed database using the terms "bilateral shoulder dislocation" and also "bilateral glenohumeral dislocation"...
September 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/29234659/accessory-muscle-of-the-flexor-digitorum-superficialis-and-its-clinical-implications
#20
Edie Benedito Caetano, João José Sabongi Neto, Lucas Augusto Ayres Ribas, Edson Vinícius Milanello
Anatomical variations of the flexor digitorum superficialis (FDS) muscle and tendon unit are frequently reported by anatomists and clinicians. Anatomical muscle variations of the FDS and its tendons may include variations of muscle belly, presence of accessory or duplicate tendons, abnormal tendon connections, and absence of muscle or tendon components. Such variations may or may not have clinical implications. This report presents a case not described previously: a unilateral accessory muscle of the flexor digitorum superficialis which was connected by a thick tendon to the flexor digitorum superficialis muscle; it was directed proximally to the insertion of the medial epicondyle of the humerus, next to the superficialis head of the pronator teres muscle...
November 2017: Revista Brasileira de Ortopedia
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