distal humerus fractures
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Author(s):  
Pravin K. Vanchi ◽  
Raghav R. V. ◽  
Mohan Kumar M.

<p><strong>Background: </strong>Distal humerus intra-articular fractures are one of the complicated fractures managed by orthopaedic surgeons. We did a prospective and a retrospective study on 21 patients with these fractures treated with pre-contoured locking compression plate.</p><p><strong>Methods: </strong>The<strong> </strong>21 patients in this series were followed for a minimum of 1 year. The prospective study cases were followed at 3 months, 6 months and annually. The rating system of the Mayo elbow functional scoring system was used. The radiological evaluation was done using standard AP and lateral views.<strong></strong></p><p><strong>Results: </strong>We had 14 patients with range of motion of 50-100 degrees. There was only one patient with range of motion of &lt;50 degrees. 6 patients had the maximum range motion of &gt;100 degrees. We had 6 (23.57%) excellent, 9 (42.85%) good, 5 (23.80%) fair and 1 (4.7%) poor in the Mayo elbow scoring at the end of 1 year. We were able to compare our outcomes with a study done by Kumar et al done in 2017. They had 27 (89.66%) of excellent and good results as opposed to 27 (79.4%) in our study. Out of 21 patients in our study 17(80.95%) patients had good 11 (52.5%) / excellent 6 (28.5%) results. This was comparable with Jupiter et al. His study of 34 patients 26 (79.40/0) patients showed good 14 (41%) / excellent 13 (38.4%) result.<strong></strong></p><p><strong>Conclusions: </strong>Pre-contoured locking compression plate appears to be technically an ideal implant for comminuted osteoporotic bone providing an angle stable construct.</p>


2022 ◽  
pp. 283-294
Author(s):  
Rachel Honig ◽  
Joaquin Sanchez-Sotelo ◽  
Jonathan Barlow

Author(s):  
Werner Schmoelz ◽  
Jan Philipp Zierleyn ◽  
Romed Hoermann ◽  
Rohit Arora

Abstract Introduction Surgical training and biomechanical testing require models that realistically represent the in vivo injury condition. The aim of this work was to develop and test a method for the generation of distal humerus fractures and olecranon fractures in human specimens, while preserving the soft tissue envelope. Methods Twenty-one cadaveric upper extremity specimens (7 female, 14 male) were used. Two different experimental setups were developed, one to generate distal humerus fractures and one to generate olecranon fractures. Specimens were placed in a material testing machine and fractured with a predefined displacement. The force required for fracturing and the corresponding displacement were recorded and the induced energy was derived of the force–displacement graphs. After fracturing, CT imaging was performed and fractures were classified according to the AO classification. Results Eleven distal humerus fractures and 10 olecranon fractures with intact soft tissue envelope could be created. Distal humerus fractures were classified as AO type C (n = 9) and as type B (n = 2), all olecranon fractures were classified as AO type B (n = 10). Distal humerus fractures required significantly more load than olecranon fractures (6077 N ± 1583 vs 4136 N ± 2368, p = 0.038) and absorbed more energy until fracture than olecranon fractures (17.8 J ± 9.1 vs 11.7 J ± 7.6, p = 0.11), while the displacement at fracture was similar (5.8 mm ± 1.6 vs 5.9 mm ± 3.1, p = 0.89). Conclusion The experimental setups are suitable for generating olecranon fractures and distal humerus fractures with intact soft tissue mantle for surgical training and biomechanical testing.


2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Lingpeng Kong ◽  
Yan Wang ◽  
Qingsen Lu ◽  
Yong Han ◽  
Fu Wang

Abstract Background The traditional strategy for fixing intra-articular distal humerus fractures is double plating placed in an orthogonal configuration, based on posterior approach. With a combined medial and lateral approach, a novel configuration of plating (combined anteromedial and anterolateral plating) has been used. In this study, we investigated the biomechanical properties of the novel plating by comparing it with some traditional strategies. Methods Based on the 3D morphology of a healthy subject’s humerus, models of three types of intra-articular distal humeral fractures were established using a variety of different internal fixation methods: (a) treatment of a simple intra-articular fracture of the distal humerus with the novel double plate and a traditional orthogonal plate; (b) treatment of a comminuted fracture of the lower distal humerus with the novel double plate, a traditional orthogonal plate and a traditional orthogonal plate combined with distally extended tension screws; (c) treatment of a coronal shear fracture of the distal humerus with the novel double plate, a traditional orthogonal plate and the intra-articular placement of three screws. The material properties of all plates and screws were isotropic and linearly elastic. The Poisson ratio of the implant and bone was 0.3, and the elastic modulus of the implant was 114,000 MPa. The axial loading is 200 N, the bending loading is 30 N and varus rotation is 7.5 Nm in the longitudinal direction. Results A simple model of intra-articular fracture of the distal humerus (AO C1 type) was established. Under all experimental conditions, the novel double plate showed greater stiffness than the orthogonal double plate. The axial straightening, bending compression and varus torsion increased by 18.00%, 16.00% and 44.00%, respectively. In the model of comminuted fracture of the lower distal humerus, the novel double plate showed the best stiffness under three experimental conditions (163.93 N/mm, 37.97 N/mm, 2697.84 N mm/°), and the stiffness of the traditional orthogonal plate combined with the distally extended tension screws was similar to that of the traditional orthogonal plate (121.21 N/mm, 32.61 N/mm, 1968.50 N mm/°). In the model of coronal shear fracture of the distal humerus, the novel double plate showed the best stiffness under all test conditions (194.17 N/mm, 38.46 N/mm, 2929.69 N mm/°), followed by the traditional plate (153.85 N/mm, 33.33 N/mm, 2650.18 N mm/°), while the stiffness of the three screws was the smallest (115.61 N/mm, 28.30 N/mm, 2180.23 N mm/°). Conclusions In terms of biomechanics, compared with other internal fixation methods, the novel combined anteromedial and anterolateral anatomical locking double-plate showed less stress, less displacement and greater stiffness. The novel double-plate method can be used to treat not only simple intra-articular fractures of the humerus but also complex comminuted fractures of the lower distal humerus and coronal shear fractures of the distal humerus, with a better effect than current traditional internal fixation methods.


2021 ◽  
Vol 15 (10) ◽  
pp. 2692-2694
Author(s):  
Haroon-ur- Rehman Gillani ◽  
Muhammad Umar Habib ◽  
Danish Hassan ◽  
Syed Muhammad Shah

Background: The focus for early postoperative motion in stable fixation is aimed at good restoration of joint anatomy in relation to movements, strength, and joint play and to compare the functional outcomes after the surgical repair of distal humerus fractures in contrast with supervised and home-based rehabilitation. Aim: To provide guidelines to effectively manage the post-operative functional complications. Method: Sixty-four patients with the distal humerus fractures were treated surgically, participated in the study at the mean follow up of 6 months. Mayo Elbow Performance Score (MEPS), Disabilities of the Arm shoulder and Hand (DASH), Visual Analogue Scale and Goniometer, radiographic evaluation was done to assess outcomes at baseline (2nd week after cast removal), 10th week &6th month post-operative. Results: Among 60 patients, average MEPS, DASH, Arc of motion was significantly better in supervised rehabilitation group in contrast with home-based rehabilitation group (p=0.00, CI 95%). Average healing time observed on radiographs was 10-12 weeks. The overall complication rate was only 4.7%, while most of the minor complications resolved without any intervention. Conclusions: Outcomes of distal humerus fractures were good to excellent in both groups, whereas supervised rehabilitation provided better outcomes in context with ranger of motion, mobility, and functionality. Keywords: Olecranon Osteotomy, Elbow Fractures, Functional outcome, Elbow Rehabilitation


Author(s):  
Simranpreet Singh ◽  
Mudasser Arif ◽  
Sanjeev Gupta

Background: Distal humerus fractures are commonly encountered in the orthopedic emergency. The goals in the treatment of these fractures are aimed at perfect anatomical reduction which could be obtained by open reduction and internal fixation.Methods: A prospective cohort study was conducted from July 2019 to December 2020 in Government Medical College, Jammu on 35 patients with AO type C distal humerus fractures. Functional outcomes were recorded and evaluated at end of 6 months using mayo elbow performance score (MEPS) score. 3 patients were lost in the follow up and were not included in the study.Results: 32 patients in the age group 20-65 years were included in the study with a mean age of 42.5 years. Males outnumbered females in ratio of 3:1. Patients undergoing olecranon osteotomy for fixation of distal humerus fractures had mean elbow flexion (121±8.3), loss of elbow extension (10.3±4.2). The functional outcome was made using MEPS score with a mean of 84±8.4 at final follow up.Conclusions: In this study we concluded that olecranon osteotomy approach provided better outcome. Intraarticular distal humerus fractures was better visualized with olecranon osteotomy approach and allowed early mobilization.


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