scholarly journals OSTEOSÍNTESIS DE FRACTURA DE ESPINA TIBIAL ASISTIDA CON ARTROSCOPÍA Y TORNILLO DE COMPRESIÓN TIPO HERBERT, REPORTE DE UN CASO Y REVISIÓN DE LITERATURA.

2021 ◽  
Vol 32 (1) ◽  
pp. s3-s4
Author(s):  
Katherine Patricia Portero ◽  
Stefany Belén Pullupaxi
Keyword(s):  
High Energy ◽  
Ligament Injury ◽  
Correct Identification ◽  
Spine Fractures ◽  
Fracture Fragment ◽  
Tibial Spine ◽  
Soft Tissue Involvement ◽  
The Subject ◽  
Joint Congruence ◽  
Flexion And Extension

Introduction Tibial spine fractures have a prevalence of 3 per 100,000 people annually. High-energy trauma is the leading cause, followed by low-energy trauma and 40% by multiple trauma. Imaging studies play a crucial role in establishing the diagnosis. It is important to understand that radiography alone does not allow a correct identification of the fracture, so it is necessary to complement it with a CT or MRI scan. The Meyers-McKeever classification divides fractures by their degree of displacement and comminution into 4 types and guides us in the therapeutic decision. The management of these fractures depends on the morphology, soft tissue involvement and the general condition of the patient. Surgical treatment is primarily considered for displaced fractures. Within this approach, the arthroscopy-assisted technique has reported excellent results. with a low complication rate, compared to open techniques, despite the few studies to define the standard Gold treatment. Case description A clinical case of a 32-year-old patient with a posterior tibial spine fracture is reported, who underwent surgery with arthroscopic-assisted osteosynthesis and a 4.5 x 4.0 Herbert-type compression screw with intraoperative arthroscopic images that demonstrated the restoration of joint congruence, without menisci or ligament injury, assessing intraoperative arches of motion from 0 to 90 degrees. In his mediate postsurgical has been started isometric physiotherapy with flexion and extension of the knee from 0 to 90 degrees plus strengthening of the iliac psoas and quadriceps and resume his activities in 2 months after his surgery. Conclusion At present, there is no consensus on the optimal surgical technique due to the lack of clinical trials. More studies of higher quality and sample size are necessary to establish the Gold Standard in the treatment of tibial spine fractures. However, we found that by using Herbert-type compression screws, timely compression of the fracture fragment is achieved in the anatomical reduction. An updated review of the subject and its therapeutic management is carried out.

scholarly journals Pediatric Type II Tibial Spine Fractures: Addressing the Treatment Controversy With a Mixed-Effects Model

2019 ◽  
Vol 7 (8) ◽  
pp. 232596711986616
Author(s):  
Alexander J. Adams ◽  
Nathan N. O’Hara ◽  
Joshua M. Abzug ◽  
Julien T. Aoyama ◽  
Theodore J. Ganley ◽  
...  
Keyword(s):  
Operative Treatment ◽  
Risk Taking ◽  
Mixed Effects ◽  
Spine Fractures ◽  
Type Ii ◽  
Fracture Fragment ◽  
Orthopaedic Surgeons ◽  
Tibial Spine ◽  
Surgeon Training ◽  
Pediatric Orthopaedic

Background: Tibial spine fractures, although relatively rare, account for a substantial proportion of pediatric knee injuries with effusions and can have significant complications. Meyers and McKeever type II fractures are displaced anteriorly with an intact posterior hinge. Whether this subtype of pediatric tibial spine fracture should be treated operatively or nonoperatively remains controversial. Surgical delay is associated with an increased risk of arthrofibrosis; thus, prompt treatment decision making is imperative. Purpose: To assess for variability among pediatric orthopaedic surgeons when treating pediatric type II tibial spine fractures. Study Design: Cross-sectional study. Methods: A discrete choice experiment was conducted to determine the patient and injury attributes that influence the management choice. A convenience sample of 20 pediatric orthopaedic surgeons reviewed 40 case vignettes, including physis-blinded radiographs displaying displaced fractures and a description of the patient’s sex, age, mechanism of injury, and predominant sport. Surgeons were asked whether they would treat the fracture operatively or nonoperatively. A mixed-effects model was then used to determine the patient attributes most likely to influence the surgeon’s decision, as well as surgeon training background, years in practice, and risk-taking behavior. Results: The majority of respondents selected operative treatment for 85% of the presented cases. The degree of fracture displacement was the only attribute significantly associated with treatment choice ( P < .001). Surgeons were 28% more likely to treat the fracture operatively with each additional millimeter of displacement of fracture fragment. Over 64% of surgeons chose to treat operatively when the fracture fragment was displaced by ≥3.5 mm. Significant variation in surgeon’s propensity for operative treatment of this fracture was observed ( P = .01). Surgeon training, years in practice, and risk-taking scores were not associated with the respondent’s preference for surgical treatment. Conclusion: There was substantial variation among pediatric orthopaedic surgeons when treating type II tibial spine fractures. The decision to operate was based on the degree of fracture displacement. Identifying current treatment preferences among surgeons given different patient factors can highlight current variation in practice patterns and direct efforts toward promoting the most optimal treatment strategies for controversial type II tibial spine fractures.

scholarly journals AN ALTERNATIVE APPROACH TO IDENTIFY KEY INDUSTRIES: ISSUES TO SELECTION CRITERIA

2014 ◽  
Vol 15 (3) ◽  
pp. 577-598
Author(s):  
Abul Quasem Al-Amin ◽  
Abdul Hamid Jaafar
Keyword(s):  
Selection Criteria ◽  
Public Investment ◽  
Correct Identification ◽  
The Public ◽  
Study Approach ◽  
Sectoral Planning ◽  
Alternative Approach ◽  
The Subject ◽  
Key Industries ◽  
High Degree

Within a process of modeling exercise, this study aimed to understand appropriate selection criteria to identify key industries. There are many key sector identification linkage measures in the subject matter and sensitivity issue among them can be tricky because many of these measures differ only slightly but can result in outcomes that are quite dissimilar. With this background, we proposed an alternate approach that helps to resolve this issue. The proposed approach utilizes in this study by five sub-methods and high degree of the frequency of their occurrences in sub-methods to determine the key sectors. The study approach is applied to Malaysia as the public sector investment remains a large share in the national economy, like other developing countries, and the correct identification is still a challenge for sectoral planning. The experiences from this study can be used to guide appropriate public investment in Malaysia and elsewhere with similar economic forms.

scholarly journals Effective theories with dark matter applications

2021 ◽  
Author(s):  
Subhaditya Bhattacharya ◽  
José Wudka
Keyword(s):  
Field Theory ◽  
Dark Matter ◽  
Effective Field Theory ◽  
Particle Physics ◽  
High Energy ◽  
New Physics ◽  
Effective Field ◽  
The Subject ◽  
Effective Theories ◽  
Detailed Nature

Standard Model (SM) of particle physics has achieved enormous success in describing the interactions among the known fundamental constituents of nature, yet it fails to describe phenomena for which there is very strong experimental evidence, such as the existence of dark matter, and which point to the existence of new physics not included in that model; beyond its existence, experimental data, however, have not provided clear indications as to the nature of that new physics. The effective field theory (EFT) approach, the subject of this review, is designed for this type of situations; it provides a consistent and unbiased framework within which to study new physics effects whose existence is expected but whose detailed nature is known very imperfectly. We will provide a description of this approach together with a discussion of some of its basic theoretical aspects. We then consider applications to high-energy phenomenology and conclude with a discussion of the application of EFT techniques to the study of dark matter physics and its possible interactions with the SM. In several of the applications we also briefly discuss specific models that are ultraviolet complete and may realize the effects described by the EFT.

Tibial Spine Fractures

2012 ◽  
pp. 865-871
Author(s):  
Yi-Meng Yen ◽  
Mininder S. Kocher
Keyword(s):  
Spine Fractures ◽  
Tibial Spine

Information Transmission during Eye Movements

1979 ◽  
Vol 21 (3) ◽  
pp. 331-336 ◽  
Author(s):  
Albert E. Bartz
Keyword(s):  
Eye Movements ◽  
Information Transmission ◽  
Eye Movement ◽  
Correct Identification ◽  
Threshold Functions ◽  
Compensatory Movement ◽  
The Subject

Target stimuli (the numeral 5 at 60 degrees to the left of the subject's fixation point) were extinguished at various times during the subject's eye movement to that stimulus and the subject was asked to guess what numeral had occurred. Threshold functions were constructed from these data, and it was found that at the beginning of the backward compensatory movement, very little information was transmitted. However, as the backward compensatory movement progressed, there was an increase in the correct identification of the stimulus, and a threshold was reached before the forward compensatory movement began.

scholarly journals Electromyographic Pattern Analysis and Classification for a Robotic Prosthetic Arm

2006 ◽  
Vol 3 (2) ◽  
pp. 113-119 ◽  
Author(s):  
M. José H. Erazo Macias ◽  
S. Alejandro Vega
Keyword(s):  
Pattern Classification ◽  
Classification Scheme ◽  
Pattern Analysis ◽  
Signal Classification ◽  
Wrist Movement ◽  
Shoulder Muscles ◽  
The Subject ◽  
Electromyographic Signals ◽  
Flexion And Extension

This paper deals with the statistical analysis and pattern classification of electromyographic signals from the biceps of a person with amputation below the humerus. Such signals collected from an amputation simulator are synergistically generated to produce discrete elbow movements. The purpose of this study is to utilise these signals to control an electrically driven prosthetic or orthotic elbow with minimum extra mental effort on the part of the subject. The results show very good separability of classes of movements when a learning pattern classification scheme is used, and a superposition of any composite motion to the three basic primitive motions—humeral rotation in and out, flexion and extension, and pronation and supination. Since no synergy was detected for the wrist movement, different inputs have to be provided for a grip. In addition, the method described is not limited by the location of the electrodes. For amputees with shorter stumps, synergistic signals could be obtained from the shoulder muscles. However, the presentation in this paper is limited to biceps signal classification only.

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