Clinical and radiographic evaluation of implant‐supported single‐unit crowns with cantilever extension in posterior areas: A retrospective study with a follow‐up of at least 10 years

Author(s):  
Eric Schmid ◽  
Andrea Roccuzzo ◽  
Michele Morandini ◽  
Christoph A. Ramseier ◽  
Anton Sculean ◽  
...  
2014 ◽  
Vol 13 (2) ◽  
pp. 104-107 ◽  
Author(s):  
Fabio Araújo Fernandes ◽  
João Paulo Machado Bergamaschi ◽  
Luciano Antonio Nassar Pellegrino ◽  
Ricardo Shigueaki Galhego Umeta ◽  
Maria Fernanda Silber Caffaro ◽  
...  

Objectives: To analyze radiographically the postoperative kyphosis from patients undergoing surgical treatment for AIS with pedicle screws in all vertebrae included in the arthrodesis. Methods: Retrospective study. The following measurements were evaluated: Cobb angle in anteroposterior radiograph of the three curves (proximal thoracic, main thoracic, and lumbar), Cobb angle in the lateral view of the two curves: thoracic kyphosis (T5-T12) and lumbar lordosis (T12-S1). Results: Of the 25 patients evaluated preoperatively, four (16%) were hypokyphotic, 20 patients (80%) were normokyphotic and only one (4%) was hyperkyphotic. For hypokyphotic and hiperkyphotic patients a satisfactory correction of thoracic kyphosis was obtained in 100% of cases, which was preserved in the final result. The same pattern of thoracic kyphosis was observed for all normokyphotic patients throughout the follow-up. Conclusion: Radiographic evaluation of thoracic kyphosis in patients with AIS treated surgically with pedicle screws in all vertebrae showed satisfactory results with respect to the correction of thoracic kyphosis.


2013 ◽  
Vol 26 (2) ◽  
pp. 149-156 ◽  
Author(s):  
J. Zweers ◽  
A. van Doornik ◽  
E. A. H. Hogendorf ◽  
M. Quirynen ◽  
G. A. Van der Weijden

2020 ◽  
Author(s):  
hongheng lin ◽  
Xiaoting Ou ◽  
Wenchao Li ◽  
Minyuan Chen ◽  
Caijun Liu ◽  
...  

Abstract BackgroundThis is a retrospective study to evaluate the efficacy of percutaneous short segment fixation (PSSF) with or without intermediate screws in Magerl A3 thoracolumbar (TL) fractures accompanied with low bone mineral density (BMD).Methods From January 2017 to December 2018, 30 patients diagnosed with Magerl A3 TL fractures having a BMD between 0.5/cm2 and 1g/cm2 in the lumbar vertebrae with intact neurological functions and a history of major trauma who underwent PSSF with or without intermediate screws were enrolled in this study. The patients were divided into two groups of those with intermediate screws (group F) or without (group S). The operation time and intra-operation blood loss were recorded. Oswestry disability index (ODI) questionnaire and visual analogue scale (VAS) were employed as clinical assessments and quantified. Radiographic follow-up assessed according to the Cobb angle (CA), Vertebral wedge angle (VWA), and anterior vertebral body height (AVBH).ResultsLoose screws were observed in 4 of the 30 enrolled patients. Significant differences were observed in operation time and intra-operative blood loss between the two groups. The enrolled patients’ clinical results (VAS and ODI scores) were good, however, no significant differences during all follow-up periods were present between the two groups. Radiographic evaluation (CA, VWA and AVBH) improved immediately after surgery, but significant correction loss was observed in the follow-up periods, especially in the first month. Radiographic evaluation demonstrated no significant differences between the two groups.Conclusion Although the patients’ clinical results were satisfactory, PSSF could not resist the correction loss in Magerl A3 TL fractures accompanied with BMD below 1g/cm2. Accordingly, the use of intermediate pedicle screws may be unnecessary due to their limited ability in resisting correction loss and increasing operation time as well as intra-operation blood loss.


2020 ◽  
Author(s):  
Hongfeng Sheng ◽  
Weixing Xu ◽  
Bin Xu ◽  
Hongpu Song ◽  
Di Lu ◽  
...  

UNSTRUCTURED The retrospective study of Taylor's three-dimensional external fixator for the treatment of tibiofibular fractures provides a theoretical basis for the application of this technology. The paper collected 28 patients with tibiofibular fractures from the Department of Orthopaedics in our hospital from March 2015 to June 2018. After the treatment, the follow-up evaluation of Taylor's three-dimensional external fixator for the treatment of tibiofibular fractures and concurrency the incidence of the disease, as well as the efficacy and occurrence of the internal fixation of the treatment of tibial fractures in our hospital. The results showed that Taylor's three-dimensional external fixator was superior to orthopaedics in the treatment of tibiofibular fractures in terms of efficacy and complications. To this end, the thesis research can be concluded as follows: Taylor three-dimensional external fixation in the treatment of tibiofibular fractures is more effective, and the incidence of occurrence is low, is a new technology for the treatment of tibiofibular fractures, it is worthy of clinical promotion.


2018 ◽  
Vol 2 ◽  
pp. 247154921880777
Author(s):  
Zachary J Bloom ◽  
Cesar D Lopez, BA ◽  
Stephen P Maier ◽  
Brian B Shiu ◽  
Djuro Petkovic ◽  
...  

Introduction Lesser tuberosity osteotomy (LTO) during anatomic total shoulder arthroplasty has a 13% nonunion rate. Treatment for LTO nonunion is controversial and poorly described in the literature. The purpose of this study was to compare the surgical and nonsurgical treatment outcomes of LTO nonunion. Methods A retrospective case series of 9 consecutive patients with LTO nonunion after primary anatomic shoulder arthroplasty at 1 institution from 2010 to 2016 were studied. Outcomes measured were radiographic evaluation of LTO on axillary X-ray, clinical range of motion (ROM), subscapularis strength, and pain at the time of LTO nonunion diagnosis and after either conservative care or surgical repair of the LTO nonunion. Results LTO nonunion was treated surgically in 4 and conservatively in 5 patients with average follow-up of 30 and 22 months, respectively. There were no significant differences in age, sex, or smoking status between groups. Treatment decision was a shared model of surgeon and patient. Displaced LTO nonunion was treated surgically in 2 and conservatively in 3 patients. There were no differences in LTO union rate of 50% in the surgical versus 60% in the conservative group. Abdominal compression test was abnormal in 50% of surgical versus 40% of conservative groups. At follow-up, ROM was lower in the surgical group with 128° forward elevation (FE) and 33° external rotation (ER) compared to 148° FE and 62° ER. Only 1 patient with LTO nonunion required conversion to reverse replacement. Conclusion LTO nonunion after shoulder arthroplasty is rare. Surgical repair of LTO nonunion does not significantly improve clinical or radiographic outcomes compared to conservative care.


2019 ◽  
Vol 81 (2) ◽  
pp. 117-123 ◽  
Author(s):  
Yasemin Topal ◽  
Tove Agner ◽  
Janique van der Heiden ◽  
Niels E. Ebbehøj ◽  
Kim K. B. Clemmensen

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