A Retrospective Study of Postoperative Development of Implant-Induced Osteoporosis in Radial–Ulnar Fractures in Toy Breed Dogs Treated with Plate Fixation

2021 ◽  
Author(s):  
Norihiro Muroi ◽  
Masakazu Shimada ◽  
Sawako Murakami ◽  
Hiroyuki Akagi ◽  
Nobuo Kanno ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Internal Fixation ◽  
Bone Mineral ◽  
Plate Fixation ◽  
Areal Density ◽  
Postoperative Recovery ◽  
Plate Removal ◽  
Digital Radiographs ◽  
Humeral Condyle ◽  
Removal Group

Abstract Objective This study aimed to evaluate implant-induced osteoporosis (IIO) development in toy breed dogs treated using internal fixation with digital radiographs as the index of pixel values. Study Design There were 226 cases (236 limbs) of toy breed dogs with radial–ulnar fractures. Pixel values were measured on radiographs immediately, 2 weeks and 1 to 12 months after surgery. The ratio of pixel values (PVR) represented the bone mineral areal density based on the humeral condyle in the same image. The dogs were grouped based on the fixation methods, age and status of destabilization. Results There was a significant decrease in the PVR at 1 to 12 months postoperatively for all cases. There were not any significant differences in PVR of antebrachial fractures between those repaired with plates using locking head screws, cortex screws or a combination of locking and cortex screws. Implant-induced osteoporosis persisted at 1 to 12 months postoperatively in dogs aged ≧6 months, while the PVR increased after 3 months in dogs aged <6 months. Based on the destabilization method, there was a significant increase in the PVR at 3 months in the plate removal group. Conclusion This study suggests that IIO occurs in small dogs treated with plates and screws. Moreover, patients aged < 6 months showed an early postoperative recovery of bone mineral areal density. Further, screw and plate removal could contribute to the recovery of bone mineral areal density.

Calcaneal Tuberosity Fracture (Beak Fracture) Fixation Using a Pre-contoured “L-form” Hook Plate: A Retrospective Study

2021 ◽  
Author(s):  
Qiang Zhang ◽  
Chan Zhu ◽  
Zongde Wu
Keyword(s):  
Retrospective Study ◽  
Internal Fixation ◽  
Plate Fixation ◽  
Hook Plate ◽  
Fixation Technique ◽  
Fixation Failure ◽  
Clinical Healing ◽  
Ankle Function ◽  
Calcaneal Tuberosity

Abstract Background: The treatment of calcaneal tuberosity fracture (beak fracture) is very tricky. Patients’ ankle function may be badly affected by skin flap necrosis and internal fixation failure. This study presented a simple, and safe internal fixation technique which is to fix the fracture fragment with a pre-contoured “L-form” hook plate.Methods: A retrospective study was done to analyze patients with calcaneal tuberosity fracture who were treated with pre-contoured “L-form” hook plate fixation from January 2015 to February 2020. When the patients could complete single-legged heel raise tests, and when they achieved clinical healing criteria were reviewed. Functional assessment was performed according to the American Orthopaedic Foot and Ankle Society Ankle-Hindfoot (AOFAS-AH) scores and the Visual Analogue Scale (VAS) was recommended for assessment of pain intensity (PI).Results: There were a total of 15 patients of calcaneal tuberosity fracture (beak fracture) treated with the pre-contoured “L-form” hook plate fixation technique, among which eight patients were female and the others were male, with the age ranging from 35 to 69 years (average of 55.3±9.0 years). And the mean duration of follow-up was 22.53±5.78 months (range: 12 to 36 months). 11 cases underwent emergency surgery. After the operation, there were no complications such as wound dehiscence, poor wound healing, infections, or plate exposure, no sural nerve injuries or venous thromboembolic events. Also, there was no loss of reduction or fixation failure in the follow-up. All 15 cases achieved clinical healing at 8-13 weeks (average 10.5±1.4 weeks) postoperatively. They were able to perform the test on their affected leg after 3.7±0.7 months (3-5 months) on average. The preoperative VAS and AOFAS-AH scores were 5.7±0.6 and 24.0±9.9 respectively, while the postoperative VAS and AOFAS-AH scores at the last follow-up were 1.3±0.5 and 93.8±5.2 (p<0.001).Conclusion: Emergency open reduction and internal fixation should be provided as soon as possible. For patients with Beavis type II beak fractures, the pre-contoured “L-form” hook plate fixation technique helps them restore normal ankle function. This simple, safe, and strong internal fixation technique can be one of the treatment options for avulsion fractures of the calcaneal tuberosity.

Clinical Value of Computer-Assisted Taylor Three-dimensional External Fixation in the Treatment of Tibiofibular Fracture (Preprint)

2020 ◽  
Author(s):  
Hongfeng Sheng ◽  
Weixing Xu ◽  
Bin Xu ◽  
Hongpu Song ◽  
Di Lu ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Internal Fixation ◽  
External Fixation ◽  
External Fixator ◽  
Theoretical Basis ◽  
New Technology ◽  
Three Dimensional ◽  
Computer Assisted ◽  
Clinical Value

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.

A Biomechanical Evaluation of Three Forms of Internal Fixation Used in Ankle Arthrodesis

1994 ◽  
Vol 15 (6) ◽  
pp. 297-300 ◽  
Author(s):  
Michael P. Dohm ◽  
James B. Benjamin ◽  
Jeffrey Harrison ◽  
John A. Szivek
Keyword(s):  
Internal Fixation ◽  
Plate Fixation ◽  
Ankle Arthrodesis ◽  
Biomechanical Study ◽  
The Other ◽  
Fixation Failure ◽  
Plate Group ◽  
Biomechanical Evaluation ◽  
The Stability ◽  
Fibular Strut

A biomechanical study was undertaken to evaluate the relative stability of three types of internal fixation used for ankle arthrodesis. Crossed screw fixation, RAF fibular strut fixation, and T-plate fixation were tested in 30 cadaver ankles using an MTS machine. T-plate fixation consistantly provided the stiffest construct when compared with the other types of fixation. Failure occurred by distraction of bony surfaces, posterior to the plane of fixation, in the crossed screw and RAF groups. In contrast, failure in the T-plate group occurred through compression of bone anterior to the midcoronal plane of the tibia. Although the stability of fixation is only one factor in determining the success or failure of ankle arthrodesis, the results of this study would support T-plate fixation over the other forms tested.

Complications of the Transmasseteric Anteroparotid Approach for Subcondylar Fractures: A Retrospective Study

2021 ◽  
pp. 194338752110169
Author(s):  
Jared Gilliland ◽  
Fabio Ritto ◽  
Paul Tiwana
Keyword(s):  
Retrospective Study ◽  
Facial Nerve ◽  
Internal Fixation ◽  
Closed Reduction ◽  
Open Reduction ◽  
Mouth Opening ◽  
Facial Nerve Paralysis ◽  
Nerve Paralysis ◽  
University Of Oklahoma ◽  
The University

Study Design: A retrospective analysis of patients with subcondylar fractures treated via a transmasseteric anteroparotid approach by the Oral and Maxillofacial Department at the University of Oklahoma. Objective: The goal of this study was to evaluate complications, morbidity, and safety with the transmasseteric anteroparotid approach for treatment of subcondylar fractures, and compare it to other findings previously reported in the literature. Methods: A retrospective study was conducted that consisted of 23 surgically treated patients in the past 2 years for subcondylar fractures. Only patients with pre-operative malocclusion and who underwent open reduction with internal fixation with the transmasseteric anteroparotid (TMAP) approach were included. Exclusion criteria included 1) patients treated with closed reduction 2) patients who failed the minimum of 1, 3, and 6-week post-operative visits. The examined parameters were the degree of mouth opening, occlusal relationship, facial nerve function, incidence of salivary fistula and results of imaging studies. Results: 20 of the surgically treated patients met the inclusion criteria. Two patients were excluded due to poor post-operative follow up and 1 was a revision of an attempted closed reduction by an outside surgeon that presented with pre-existing complications. There were no cases of temporary or permanent facial nerve paralysis reported. There were 3 salivary fistulas and 2 sialoceles, which were managed conservatively and resolved within 2 weeks, and 2 cases of inadequate post-surgical maximal incisal opening (<40 mm) were observed. Conclusion: The transmasseteric anteroparotid approach is a safe approach for open reduction and internal fixation of low condylar neck and subcondylar fractures, and it has minimal complications.

scholarly journals Comparison of Outcomes Between Anti-Nuss Operation and Modified Anti-Nuss Operation Using a Flexible Plate for Correcting Pectus Carinatum: A Retrospective Study

2021 ◽  
Vol 7 ◽  
Author(s):  
Lei Wang ◽  
Juan Liu ◽  
Saie Shen ◽  
Yao Li ◽  
Tienan Feng ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Steel Plate ◽  
Outcome Analysis ◽  
Nuss Procedure ◽  
Flexible Plate ◽  
Pectus Carinatum ◽  
Short Term ◽  
Plate Removal ◽  
Traditional Procedure ◽  
Operation Duration

Introduction: The anti-Nuss procedure has gradually been found to have several shortcomings in clinical practice. Accordingly, our department previously designed and introduced a new steel plate. However, there is limited evidence regarding its safety and efficacy. Thus, we aim to compare the efficacy and safety of the conventional anti-Nuss operation with those of a modified anti-Nuss operation using a flexible plate.Methods: Patients with pectus carinatum who underwent surgery between January 2014 and August 2019 were consecutively enrolled in this single-center, retrospective study. In all, 53 patients underwent the modified procedure using the new steel plate (new procedure group), whereas 43 underwent the conventional anti-Nuss procedure (traditional procedure group). Outcome analysis was performed using SPSS to compare the intraoperative and postoperative short-term outcomes.Results: All patients in the new procedure group had shorter operation duration (75.23 ± 11.90 vs. 82.45 ± 9.30 min, p = 0.008), postoperative hospitalizations (3.42 ± 0.95 vs. 4.64 ± 1.53 days, p = 0.039), and plate removal surgery durations (40.60 ± 3.47 vs. 60.30 ± 9.75 min, p = 0.041) than patients in the traditional procedure group. There were no significant differences in the length of incision, postoperative Haller index, cost, postoperative surgical outcome, and incidence of complications between the two groups.Conclusion: Our data reveal that the main clinical outcomes were similar for after anti-Nuss operation and modified anti-Nuss operation. However, the modified procedure for pectus carinatum had a shorter operation duration, postoperative hospitalization, and plate removal surgery duration.

scholarly journals Internal fixation of femoral neck fractures: Compression screw compared with nail plate fixation

1984 ◽  
Vol 55 (4) ◽  
pp. 423-429 ◽  
Author(s):  
Svein Svenningsen ◽  
Pål Benum ◽  
Olav Nesse ◽  
Odd Ivar Furset
Keyword(s):  
Femoral Neck ◽  
Internal Fixation ◽  
Plate Fixation ◽  
Nail Plate ◽  
Femoral Neck Fractures ◽  
Compression Screw
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