scholarly journals Elastic fixation of mallet finger fractures using two K-wires

Medicine ◽  
2019 ◽  
Vol 98 (20) ◽  
pp. e15481
Author(s):  
Qiang Chen ◽  
Yan Suo ◽  
Danhong Pan ◽  
QingPing Xie
Keyword(s):  
Mallet Finger ◽  
K Wires ◽  
Elastic Fixation

Distal phalanx fracture in adults: Seymour-type fracture

2013 ◽  
Vol 39 (3) ◽  
pp. 237-241 ◽  
Author(s):  
M. Ugurlar ◽  
G. Saka ◽  
N. Saglam ◽  
A. Milcan ◽  
T. Kurtulmus ◽  
...  
Keyword(s):  
Closed Reduction ◽  
Open Fracture ◽  
Extensor Tendon ◽  
Distal Phalanx ◽  
Mallet Finger ◽  
Surgical Methods ◽  
Type Fracture ◽  
K Wires ◽  
Type Of Fracture ◽  
Metaphyseal Region

Seymour’s fracture is an extra-articular, transverse, physeal, and juxta-epiphyseal open fracture of the distal phalanx seen in childhood. In this study, we present 10 adult cases of fractures localized to the metaphyseal region, 1–2 mm distal to the insertion of the extensor tendon. Mean age was 38 years. Four patients were treated conservatively with a mallet finger splint. Closed reduction and osteosynthesis with Kirschner wires (K-wires) was performed in three of the patients. Three of the patients had open fractures in whom closed reduction could not be performed. They underwent open reduction and osteosynthesis with K-wires. We recommend that extra-articular distal phalanx fractures mimicking mallet finger in adults are called Seymour-type fracture to establish a common language among clinicians to define this type of fracture. These fractures generally occur by hyperflexion of the distal phalanx and can be treated by conservative or surgical methods. The outcomes of conservative and surgical management of Seymour-type fractures depend on the appropriate reduction as well as efficient physical therapy.

scholarly journals Open reduction and compression with double Kirschner wires for the treatment of old bony mallet finger

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Junjun Tang ◽  
Kejian Wu ◽  
Jinchang Wang ◽  
Jian Zhang
Keyword(s):  
Open Reduction ◽  
Articular Surface ◽  
Healing Time ◽  
Anterior Dislocation ◽  
Mallet Finger ◽  
Kirschner Wires ◽  
X Ray ◽  
Healthy Side ◽  
K Wires

Abstract Background The management of old bony mallet fingers is complicated. The aim of the study is to present a new method of open reduction and compression with double Kirschner wires (K-wires) in treating old bony mallet fingers. Methods This was a retrospective analysis of patients with old closed bony mallet fingers treated between June 2013 and December 2016. Complications were observed. The range of motion (ROM) of the DIP joints was measured using a protractor. At the last follow-up, anteroposterior and lateral X-ray of the affected finger was performed, the flatness of the articular surface was scored, and the results were graded using Crawford’s criteria. Results Seventeen patients were followed up for 8 (6–19) months. The width of the avulsion fracture block accounted for 25–62% of the articular surface of the distal phalanx. Twelve (70.6%) patients had anterior dislocation of the interphalangeal joint. All patients reported healing at the fracture sites. Healing time was 7.6 ± 2.1(5–13) weeks. All patients had incision healing of I/Class A. Lateral X-ray showed 13 and four patients had excellent and good articular surface flatness, respectively. At the last follow-up, no traumatic arthritis was present. Only one patient developed mild pain after surgery (VAS score of 3). Postoperative ROM was 76.5 ± 10.6° (P = 0.0625 vs. healthy side). At the last follow-up, the angle of loss of dorsiflexion was 0–10° (P < 0.0001 vs. baseline). The flexion angle was 50–90° (P = 0.0625 vs. healthy side). Conclusions Open reduction and compression with double K-wires is feasible in treating old bony mallet finger.

DETERMINATION OF THE FUNCTION OF THE ROD’S CROSS-SECTIONAL AREA USING VIBRATION EIGENFREQUENCIES

2020 ◽  
Vol 0 (4) ◽  
pp. 19-24
Author(s):  
I.M. UTYASHEV ◽  
◽  
A.A. AITBAEVA ◽  
A.A. YULMUKHAMETOV ◽  
◽  
...  
Keyword(s):  
Cross Sectional Area ◽  
Variable Cross ◽  
Sectional Area ◽  
Longitudinal Vibrations ◽  
Cross Sectional ◽  
Method Error ◽  
Various Boundary Conditions ◽  
Elastic Fixation ◽  
Crosssectional Area

The paper presents solutions to the direct and inverse problems on longitudinal vibrations of a rod with a variable cross-sectional area. The law of variation of the cross-sectional area is modeled as an exponential function of a polynomial of degree n . The method for reconstructing this function is based on representing the fundamental system of solutions of the direct problem in the form of a Maclaurin series in the variables x and λ. Examples of solutions for various section functions and various boundary conditions are given. It is shown that to recover n unknown coefficients of a polynomial, n eigenvalues are required, and the solution is dual. An unambiguous solution was obtained only for the case of elastic fixation at one of the rod’s ends. The numerical estimation of the method error was made using input data noise. It is shown that the error in finding the variable crosssectional area is less than 1% with the error in the eigenvalues of longitudinal vibrations not exceeding 0.0001.

Open reduction of pediatric lateral condyle fractures: a systematic review

2021 ◽  
pp. 175857322110102
Author(s):  
Michael D Eckhoff ◽  
Josh C Tadlock ◽  
Tyler C Nicholson ◽  
Matthew E Wells ◽  
EStephan J Garcia ◽  
...  
Keyword(s):  
Systematic Review ◽  
Internal Fixation ◽  
Range Of Motion ◽  
Lateral Condyle ◽  
Elbow Fracture ◽  
Infection Rates ◽  
Fixation Techniques ◽  
K Wires ◽  
Pediatric Elbow Fracture ◽  
The Cost

Introduction Lateral condyle fractures are the second most common pediatric elbow fracture. There exist multiple options for internal fixation including buried K-wires, unburied K-wires, and screw fixation. Our study aims to review the current literature and determine if fixation strategy affects outcomes to include fracture union, postoperative range of motion, and need subsequent surgery. Methods A systematic review of Pubmed, MEDLINE, and EMBASE databases was performed. Included articles involve pediatric patients with displaced lateral condyle fractures treated with internal fixation that reported outcomes to include union rates and complications. Results Thirteen studies met inclusion criteria for a total of 1299 patients (472 buried K-wires, 717 unburied K-wires, and 110 screws). The patients’ average age was 5.8 ± 0.6 years, male (64%), and had 16.3 months of follow-up. No differences in union and infection rates were found. Unburied K-wires had the shortest time to union and the greatest elbow range of motion postoperatively. Conclusions Our systematic review demonstrates similar outcomes with union and infection rates between all fixation techniques. Unburied K-wires demonstrated a shorter time to union and the greatest postoperative range of motion. Additionally, unburied K-wires may be removed in clinic, decreasing the cost on the healthcare system. Evidence Level 3.

Effect of K-wire Reuse and Drill Mode on Heat Generation in Bone

Hand ◽  
2021 ◽  
pp. 155894472110031
Author(s):  
Muturi G. Muriuki ◽  
Arun K. Reddy ◽  
Alex Tauchen ◽  
Robert M. Havey ◽  
Avinash G. Patwardhan ◽  
...  
Keyword(s):  
Cell Death ◽  
Cortical Bone ◽  
Heat Generation ◽  
Kirschner Wire ◽  
Heat Exposure ◽  
Critical Temperatures ◽  
Rotary Drilling ◽  
External Cooling ◽  
K Wires ◽  
Oscillating Mode

Background We examined the effect of Kirschner wire (K-wire) reuse and use of oscillating mode on heat generation within cortical bone. Methods Two trocar-tipped K-wires were drilled through the diaphysis of each of 30 human metacarpals and phalanges: one K-wire was inserted in rotary mode and another in oscillating mode. Each wire was reused once. Thermocouples placed within the dorsal and volar bone adjacent to the K-wire drill path measured temperatures throughout each test. Results Peak cortex temperatures were 25°C to 164°C. Rotary drilling achieves peak temperatures quicker (31 ± 78 seconds vs 44 ± 78 seconds, P = .19) than oscillating drilling, but insertion time is also less, resulting in lower overall heat exposure. This effect is also seen when the K-wire is reused (34 ± 70 seconds vs 41 ± 85 seconds, P = .4). The length of time that cortical bone was exposed to critical temperatures (47°C or more) was significantly higher when a wire was reused (36 ± 72 seconds vs 43 ± 82 seconds, P = .008). Peak temperatures greater than 70°C (a temperature associated with instantaneous cell death) were observed on many occasions. Conclusions Overall heat exposure may be higher if a K-wire is reused or inserted in oscillating mode. In the absence of external cooling, K-wire insertion into cortical bone can easily expose bone to temperatures that exceed 70°C and may increase the risk of osteonecrosis.

Minimally Invasive Reduction of Intraarticular Calcaneal Fractures With Percutaneous Fixation Using Cannulated Screws Versus Kirschner Wires: A Retrospective Comparative Study

2021 ◽  
pp. 193864002098775
Author(s):  
Ahmed Shams ◽  
Osama Gamal ◽  
Mohamed Kamal Mesregah
Keyword(s):  
Patient Satisfaction ◽  
Minimally Invasive ◽  
Comparative Study ◽  
Operative Time ◽  
Cannulated Screws ◽  
Kirschner Wires ◽  
Calcaneal Fractures ◽  
K Wires ◽  
Retrospective Comparative Study ◽  
Minimally Invasive Reduction

Background Several minimally invasive techniques were developed for management of intraarticular calcaneal fractures. This study aimed to compare the functional and radiological outcomes of 2 minimally invasive reduction and fixation techniques using cannulated screws or Kirschner wires (K-wires) for fixation. Methods This study was a retrospective comparative review of patients with displaced intraarticular calcaneal fractures, who were treated with cannulated screws or K-wires techniques. Clinical and radiological data were collected and compared between both groups. Functional outcomes and patient satisfaction using the Maryland Foot Score (MFS) and the visual analogue scale (VAS) of pain, in addition to the complications, were compared between both groups. Results In total, 70 patients were included in the study: 34 in the cannulated screws group, with a mean age of 35.2 ± 4 years, and 36 in the K-wires groups, with a mean age of 33.4 ± 3 years. The operative time was shorter in the K-wires group (40.5 ± 5.6 minutes) compared to the cannulated screw group (49.5 ± 4.5 minutes), P < .001. There were no statistically significant differences between both groups regarding the radiological parameters, including Bohler’s angle, angle of Gissane, calcaneal width, height, or length. The mean MFS, mean VAS, and complications were not different between the 2 groups. Conclusion Treatment of displaced intraarticular calcaneal fractures with minimally invasive reduction and fixation using either cannulated screws or K-wires can achieve similar excellent functional and radiological outcomes, with high patient satisfaction. The use of K-wires has the advantage of reduced operative time than cannulated screws. Levels of Evidence: Level III: Retrospective comparative study

scholarly journals Intra-operative protection from exposed K-wires

2010 ◽  
Vol 92 (5) ◽  
pp. 441-441 ◽  
Author(s):  
T Halsey ◽  
E Griffiths ◽  
A Rai
Keyword(s):  
K Wires
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