Evaluation of 2.0-mm Titanium Three-Dimensional Curved Angle Strut Plate in the Fixation of Mandibular Angle Fractures-A Prospective Clinical and Radiological Analysis.
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ABSTRACT:
SUBMITTER: Chhabaria G
PROVIDER: S-EPMC4078121 | biostudies-other | 2014 Jun
REPOSITORIES: biostudies-other
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Project description:PurposeThe present study aimed to evaluate the efficacy and stability of 2.0 mm Titanium plates in treatment of mandibular angle fractures.Materials and methodsA randomized, prospective study was carried out on 17 patients treated by ORIF with 2.0 mm titanium plates. Operative handling of the plate and clinical stability were qualitatively analyzed.ResultsThe 2.0 mm plate showed good intra-operative handling and adequate clinical stability with follow up of 6 months showing good soft tissue healing.ConclusionA single 2.0 mm titanium plate provides easy handling and adequate occlusal stability in the post-operative phase as compared to the traditional 2.5 mm plate without post-operative MMF.Electronic supplementary materialThe online version of this article (doi:10.1007/s12663-010-0128-2) contains supplementary material, which is available to authorized users.
| S-EPMC3177482 | biostudies-literature
Project description:The most stable pattern of internal fixation for mandibular condyle fractures is an area of ongoing discussion. This study investigates the stability of three patterns of plate fixation using readily available, commercially pure titanium implants. Finite element models of a simulated mandibular condyle fracture were constructed. The completed models were heterogeneous in bone material properties, contained approximately 1.2 million elements and incorporated simulated jaw adducting musculature. Models were run assuming linear elasticity and isotropic material properties for bone. No human subjects were involved in this investigation. The stability of the simulated condylar fracture reduced with the different implant configurations, and the von Mises stresses of a 1.5-mm X-shaped plate, a 1.5-mm rectangular plate, and a 1.5-mm square plate (all Synthes (Synthes GmbH, Zuchwil, Switzerland) were compared. The 1.5-mm X plate was the most stable of the three 1.5-mm profile plate configurations examined and had comparable mechanical performance to a single 2.0-mm straight four-hole plate. This study does not support the use of rectangular or square plate patterns in the open reduction and internal fixation of mandibular condyle fractures. It does provide some support for the use of a 1.5-mm X plate to reduce condylar fractures in selected clinical cases.
| S-EPMC4130755 | biostudies-other
Project description:The aim of this study was to make a comparison of the biomechanical behavior of four different internal fixation systems for mandibular angle fractures. A total of 40 polyurethane mandible replicas were employed with different fixation methods: group 1SP, one 2.0-mm four-hole miniplate; group 2PPL, two 2.0-mm four-hole parallel miniplates; group 3DP, one 3D 2.0-mm four-hole miniplate; and group 3DPP, one 3D 2.0-mm eight-hole miniplate. Each group was subjected to incisal or homolateral molar region loading. The load resistance values were measured at load application causing tip displacement of 1, 3, and 5 mm, and at the time at which the system achieves its maximum strength (MS). Means and standard deviations were compared among groups using analysis of variance and the Tukey test. Group 2PPL showed higher strength for all the displacements. For incisal loading, no statistically significant differences were found between groups 1SP, 3DP, and 3DPP. For molar loading, group 1SP and 3DPP showed statistically significant differences. For MS testing, group 1SP and 2PPL showed statistically significant differences in incisal loading; group 1SP and 3DP showed no statistically significant differences; and group 3DPP showed lower values of strength. Two parallel miniplates provide the most favorable mechanical behavior under the conditions tested.
| S-EPMC4428728 | biostudies-literature
Project description:IntroductionNon-union after humeral shaft fractures are seen frequently in clinical practice. The incidence is 2-10% after conservative management and up to 30% after surgical treatment. The purpose of this study is to evaluate the outcomes of plate-and-bone-strut-allograft technique with bone chip augmentation for aseptic non-unions of the distal third of the humerus.Materials and methods26 consecutive cases were treated using a trans-triceps approach. The non-union was fixed with a 4.5 mm Locking Compression Plate combined with a strut bone allograft at the anterior part of the humerus and bone chips. All patients underwent the same rehabilitation protocol of 12 weeks. Clinical evaluation took place 12 months after surgery with the Mayo elbow score and Oxford elbow score.ResultsComplete bone healing without complications was achieved in all 26 patients. The average period of radiographic union was 106 days. The average range of flexion-extension was 108° (94°-180°) and pro-supination was 159° (102°-180°). Twelve months after surgery, average Mayo elbow score was 86 (68-100) and the Oxford elbow score was 83 (52-100).ConclusionThe plate-and-bone-strut-allograft technique with bone chip augmentation in distal humeral shaft for aseptic non-unions resulted in union of all cases. No adverse events related to the surgery or the materials used were documented.
| S-EPMC6823753 | biostudies-literature
Project description:AimTo compare and evaluate treatment outcome and postoperative complications in subcondylar fractures of mandible-single L shape plate versus two L shape plate-using plate on plate technique.Materials and methodsThe clinical trial had a total of ten patients (ten unilateral subcondylar fracture sites), which were divided randomly into two groups of five each. Group I patients underwent open reduction and internal fixation with single L shaped miniplate and Group II ORIF was done with two L shaped miniplates by plate on plate technique.ResultsBoth the groups showed comparable results in terms of postoperative complications. Few cases in Group I presented with minor occlusal discrepancy which was easily corrected with transitional inter-maxillary fixation(IMF) for 1 week, and none of the Group II cases required postoperative IMF, but stability in Group II was better than Group I.ConclusionThe results of this trial suggested that the treatment of mandibular condylar fractures with 2 (2-D) plates placed one over the other is better suited than conventionally practiced single-plate fixation. Increased 3-dimensional stability, low morbidity and infection rates are the advantages offered by 2-plate technique of ours.
| S-EPMC6639440 | biostudies-literature
Project description:This study presents the outcomes of a conservative approach to greenstick condylar fracture treatment in an elderly patient. Serial changes of the inclination angle were measured in a greenstick fracture of the mandibular subcondyle treated with intermaxillary fixation (IMF). A 64-year-old woman presented to an outpatient clinic complaining of pain on her chin. While waiting for an elevator, she lost consciousness and hit her face on the floor. She had a limited mouth-opening of 13 mm. Panoramic radiography and computed tomography confirmed a greenstick (incomplete) fracture of the left condyle, in which the lateral side of the bone was fractured and the medial side was bent. The medial inclination was approximately 40.4 degrees. On the second post-trauma day, IMF was performed using arch-bars and a prefabricated occlusal stop. Serial Towne's views were taken. The inclination of the fractured condyle was measured and compared with the contralateral side. The difference in inclination angles (DI) between the fractured and contralateral sides was plotted over time. In SPSS version 19.0, an exponential regression model was constructed. In this patient, a greenstick (incomplete) fracture of the condyle (40.4 degree inclination) was treated with IMF and a pre-fabricated occlusal stop. On day 42 post-IMF, the inclination angle had decreased to 15.6 degrees, only 5.4 degrees greater than the contralateral side. The DI was fitted to exponential regression model (y = 25.111e-0.028x, P = 0.004). This case shows that even in an elderly patient, a greenstick fracture of the mandibular condyle can be treated by vertical lengthening using an occlusal stop and IMF.
| S-EPMC8352622 | biostudies-literature
Project description:The aim of this study was to define the outcome and complications following open reduction and internal fixed-angle plating of distal radius fractures for patients on chronic immunosuppression medications. A retrospective study identified 11 patients with distal radius fractures that had been on chronic immunosuppressive medication. The mean patient age was 59.9 years (40-82 years). According to the Orthopedic Trauma Association classification, there was one 23A3, one 23B3, and nine 23C type fractures. There were two open fractures. All patients received preoperative antibiotics and underwent reduction and fixation with a volar, fixed-angle plate. Postoperative measurements included postoperative and final radiographic indices, wrist flexion and extension, forearm rotation, and grip strength. Clinical follow-up averaged 13 months, and radiographic follow-up averaged 14.9 months. Statistical analysis was performed comparing means of various parameters with a two-sided t test with an alpha value < or = 0.05. All fractures healed, and there were no infections. The final mean ulnar variance, volar tilt, and radial inclination were -0.1 mm (ulnar negative; -2.0 to +2.5 mm), 13 degrees (5-23 degrees), and 21 degrees (15-27 degrees), respectively. The mean articular gap or step was 0.4 mm. There was a small but significant decrease between the final and postoperative mean ulnar variance (p = 0.03). Mean wrist flexion was 47 degrees, extension 47 degrees , pronation 77 degrees, and supination was 76 degrees. Grip strength averaged 16.3 kg versus 25.1 kg for the opposite extremity. The one major complication included a postoperative carpal tunnel syndrome. Fixed-angle volar plate fixation for distal radius fractures in patients with chronic immunosuppression was associated with union (with acceptable radiographic alignment), no wound-healing problems or infections, and with functional wrist and forearm motion and grip strength.
| S-EPMC2584208 | biostudies-other
Project description:PurposeSurgical removal of intra-bony calcific benign lesions is technically challenging regarding its accessibility, proximity to vital structures, and deteriorating effect on the remaining bony structures.MethodsComputer-guided buccal cortical plate separation was performed for ten patients using patient-specific osteotomy locating guides and pre-bent plates. The guide was designed to outline the osteotomy, the buccal cortical plate was separated, the lesion was removed, and finally, the pre-bent plates were used to fix the separated cortex.ResultsSurgical procedures were uneventful for all patients, operation time was 39.5 ± 13.01 min, postoperative pain decreased within the follow-up time intervals, and there was a statistical significant difference between the time intervals (P value < 0.001). Edema and trismus were acceptable. One case showed nerve affection which resolved after 4 weeks.ConclusionComputer-guided buccal cortical plate separation for removal of intra-bony calcified benign lesions provides a promising approach, especially for inexperienced surgeons.Trial registrationClinicalTrials.gov NCT05329974 . Registered on 6 April 2022-retrospectively registered.
| S-EPMC9500123 | biostudies-literature
Project description:ObjectiveReconstruction plates are used to treat patients with a segmental mandibular defect after oral cancer surgery. Reconstruction plate failure analysis has rarely focused on occlusion, which conducts a mechanical force to the mandible and the plate. To determine the prognostic factors, we retrospectively evaluated patients who underwent reconstruction of a mandibular segmental defect with a reconstruction plate and assessed the number of residual paired teeth.Material and methodsFrom among 390 patients with oral cancer who visited University of Tsukuba Hospital (Tsukuba, Japan) between 2007 and 2017, we selected and analyzed the data of 37 patients who underwent segmental resection of the mandible and reconstruction with reconstruction plates. Prognostic factors evaluated were patient age, sex, TNM classification, plate manufacturer, treatment with radiotherapy or chemotherapy, whether the patient had diabetes or smoked, and whether the patient had a small number of residual paired teeth, plate length, and use of a fibular-free flap. Among these 37 patients, eight reconstruction plates had intraoral or extraoral exposure and were removed in 5 years.ResultsKaplan-Meier and log-rank analyses revealed that the prognosis for the 5-year plate exposure-free rate was significantly poorer for patients with a small number of residual teeth than for patients with no teeth or those with a large number of residual teeth (.01). Univariate Cox regression analysis revealed that a small number of residual teeth was a significant prognostic factor in the loss of a reconstruction plate (hazard ratio: 5.63; 95% confidence interval [1.10, 25.85]; .04).ConclusionsA small number of residual teeth after the segmental resection of oral cancer is significantly involved in reconstruction plate survival and may be important in predicting reconstruction plate prognosis.
| S-EPMC6820575 | biostudies-literature
Project description:Introduction There is currently no consensus as to the comparative complication profiles of mini-plate (MP) and reconstruction bar (RB) osseous fixation in fibula flap mandibular reconstruction. The aim of this study is to compare complication rates associated with the use of MP versus RB fixation for vascularized fibula free flap (FFF) reconstruction of oncologic mandibular defects in an effort to better guide hardware utilization and pre-operative virtual surgical planning methods. Methods A systematic review and meta-analysis was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. PubMed, EMBASE, and Cochrane Library databases were queried to identify studies related to FFF-based mandibular reconstruction with either MP or RB fixation. Primary endpoints of interest were plate complications, wound infection, mal- or non-union, and total flap loss. Complication rates were calculated as weighted proportions and compared via Fisher's exact testing. Results Sixteen studies met inclusion criteria, which examined 1,513 patients. Only three studies directly compared MP fixation with RB fixation. MP fixation was used in 828 (54.7%) cases and RB fixation in 685 (45.3%) cases. MP fixation demonstrated greater rates of plate-related complications (32.5% versus 18.8%, p < 0.01, respectively), fistula formation (15.8% versus 4.7%, p = 0.04), total flap loss (9.4% versus 4.7%, p = 0.02), partial flap loss (20.6% versus 6.1%, p < 0.01), and re-operation for vascular compromise (13.3% versus 4.0%, p < 0.01). Rates of infection, mal-union/non-union, and wound dehiscence were similar across both groups. Conclusion Our results suggest that MP use may be associated with higher rates of plate-related complications. Though limited by outcome reporting heterogeneity, this review can serve as a template for future investigations evaluating the safety profiles of MP and RB fixation in head and neck surgery.
| S-EPMC9391286 | biostudies-literature