Background And Hypothesis: Total shoulder arthroplasty is recommended treatment for severe osteoarthritis of the glenohumeral joint, which often results in excessive posterior wear. Two recent glenoid components with posterior augments have been designed to correct excessive posterior wear and retroversion. Our primary hypothesis was that posterior augmented glenoid designs require less bone removal than a standard glenoid design.
Methods: Ten arthritic scapulae classified as Walch B2 glenoids were virtually implanted with standard, stepped, and wedged components. The volume of surgical bone removal, the maximum reaming depth, and the portion of the implant surface in contact with cancellous vs. cortical bone were calculated for each implant.
Results: The neoglenoid made up an average of 65% ± 12% of the glenoid width. Mean surgical bone volume removed was least for the wedged (2857 ± 1618 mm(3)) compared with the stepped (4307 ± 1485 mm(3); P < .001) and standard (5385 ± 2348 mm(3); P < .001) designs. Maximum bone depth removed for the wedged (4.2 ± 2.0 mm) was less than for the stepped (7.6 ± 1.2 mm; P < .001) and standard (9.9 ± 3.2 mm; P < .001). The mean percentage of the implant's back surface supported by cancellous bone was 18.2% for the standard, 8.8% for the stepped (P = .02), and 4.3% for the wedged (P = .01).
Discussion: Both augmented components corrected glenoid version to neutral and required less bone removal, required less reaming depth, and were supported by more cortical bone than in the standard implant. The least amount of bone removed was with the wedged design.
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http://dx.doi.org/10.1016/j.jse.2014.12.007 | DOI Listing |
Acta Otorhinolaryngol Ital
December 2024
Orthodontics and Pediatric Dentistry Unit, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy.
Osteochondroma (OC) is a common bone tumour that rarely affects the mandibular condylar process. This pathology can show typical clinical features, such as facial asymmetry, deviation of the chin and dental inferior midline, changes in condylar morphology and malocclusion with an increased posterior mandibular vertical height. The management of condylar OC is a debated topic among surgeons.
View Article and Find Full Text PDFBMC Surg
January 2025
Department of orthopedics, Shanghai Pudong New Area People's Hospital, Shanghai, P.R. China.
Background: The incidence rate of subsequent refracture after removal of the implant in mid-shaft clavicle fracture patients is relatively high. This can lead to additional medical costs and cause doctor-patient dispute. This study tries to introduce a new method to predict the refracture risk of the clavicle after hardware removal.
View Article and Find Full Text PDFInt J Surg Case Rep
January 2025
Bone and Joint Diseases Research Center, Department of Orthopedic Surgery, Shiraz University of Medical Sciences, Iran; Golestan Rhematology Research Center, Golestan University of Medical Sciences, Gorgan, Iran. Electronic address:
Introduction And Importance: Osteoid osteoma (OO) is a common benign bone tumor, mostly affecting young adults. Since it often develops in long bones, OO is rarely considered as a cause of chronic shoulder pain.
Case Presentation: We treated an 8-year-old boy with ongoing shoulder pain that was worse at night but improved with NSAIDs.
Am J Case Rep
January 2025
Department of Otolaryngology, Sanford Medical Center Fargo, Fargo, ND, USA.
BACKGROUND Carotid artery injury has an incidence of 0.2% in the National Trauma Data Bank. The true incidence of intracranial carotid injury is unknown but can be estimated at less than one in 1000 trauma-related inpatient admissions in America.
View Article and Find Full Text PDFJ Clin Endocrinol Metab
January 2025
Division of Endocrinology and Metabolism, Department of Medicine, Mayo Clinic Rochester, USA.
Context: TIO, a paraneoplastic disorder characterised by renal phosphate wasting, is cured by surgical removal of the culprit tumour. Despite correct localization, some remain refractory to intervention, resulting in substantial long-term medical complications.
Aim: We aim to identify risk factors associated with a refractory outcome.
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