Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 34
Filter
1.
Eur J Orthop Surg Traumatol ; 34(5): 2457-2464, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38796813

ABSTRACT

PURPOSE: Ankle fracture-dislocations (AFD) often necessitate staged management involving temporary external fixation (EF) due to mechanical instability or blistering. However, limited literature exists on the optimal temporary immobilization method for low-energy closed AFD. This study compared baseline patient and fracture characteristics, along with clinical and radiological outcomes between AFD initially immobilized with EF versus splinting. METHODS: A retrospective cohort study was conducted involving patients with AFD temporarily immobilized using EF or splinting, followed by definitive open reduction and internal fixation. Quality of reduction (QOR) was assessed for each patient post-initial immobilization and after the definitive surgery. RESULTS: The study encompassed 194 patients: 138 treated with a splint (71.1%) and 56 (28.9%) with EF. Secondary loss of reduction had occurred in three patients who were splinted (2.2%). The mean ages in the EF and splint groups were 63.2 and 56.1 years, respectively (p = 0.01). Posterior malleolus fracture (PMF) and blisters were more prevalent in EF patients (69.6% vs. 43.5% for PMF and 76.8% vs. 20.3% for blisters, respectively; p = 0.05 and p < 0.01). Postoperative complication rates were 8.9% for EF versus 10.9% for splinting (p = 0.69). Satisfactory final QOR was attained in 79.8% of patients treated with a splint versus 64.3% with EF (p = 0.02). CONCLUSION: Patients immobilized by EF presented with poorer baseline characteristics and had more unstable injuries. Nevertheless, postoperative complication rates were comparable. Thus, EF appears to be a valuable tool for standardizing outcomes in AFD patients with a less favorable prognosis.


Subject(s)
Ankle Fractures , Fracture Dislocation , Immobilization , Splints , Humans , Retrospective Studies , Male , Ankle Fractures/surgery , Female , Middle Aged , Fracture Dislocation/surgery , Fracture Dislocation/diagnostic imaging , Immobilization/methods , Fracture Fixation, Internal/methods , Aged , Open Fracture Reduction/methods , Adult , Treatment Outcome , External Fixators
2.
Injury ; 55(4): 111385, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38359710

ABSTRACT

Pilon fractures represent a challenging subset of tibial fractures. The management of AO/OTA Type C3 fractures remains complex due to associated complications and lack of clear guidelines for surgical timing and methods. A prospective cohort study was conducted to evaluate two staged treatment strategies for AO/OTA Type C3 tibial pilon fractures. The study focused on assessing surgical difficulty, complications, and patient prognosis. One group of patients received early internal fixation of the fibula and tibial posterior column combined with external fixation, while the other group received external fixation alone in the first stage. Patients who received early internal fixation of the fibula and tibial posterior column combined with external fixation had better outcomes, including lower rate of allogeneic bone grafting (67.74 % versus 94.64 %), reduced incidence of wound delay and skin necrosis (3.23 % versus 21.43 %), shorter surgical time (133.06 ± 23.99 min versus 163.04 ± 26.83 min), shorter hospital stay (13.77 ± 2.53 days versus 18.25 ± 3.67 days), and higher AOFAS (83.05 ± 8.68 versus 79.36 ± 8.92). Additionally, avoiding fibular shortening was shown to be crucial in preventing prolonged surgery and improving patient function. The study demonstrated that the staged treatment approach with early internal fixation led to shorter operative times, improved ankle function, and reduced complications, including a lower risk of infection. The findings support the use of this treatment to optimize outcomes in AO/OTA Type C3 pilon fractures.


Subject(s)
Ankle Fractures , Ankle Injuries , Tibial Fractures , Humans , Prospective Studies , Treatment Outcome , Ankle Injuries/surgery , Tibial Fractures/diagnostic imaging , Tibial Fractures/surgery , Fracture Fixation, Internal/methods , Ankle Fractures/diagnostic imaging , Ankle Fractures/surgery , Retrospective Studies , Fracture Fixation
3.
Eur J Trauma Emerg Surg ; 50(3): 1033-1041, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38110517

ABSTRACT

PURPOSE: Despite evolving treatment, the surgical management of high-energy tibial plateau fractures (TPF) remains challenging, associating high rates of complications. In recent decades, staged management has emerged as an encouraging option. The main goal of our study was to evaluate the influence of bridging external fixation (EF) frame configuration and the resultant quality of reduction (QOR) on outcomes after staged-treatment of bicondylar TPF. METHODS: A retrospective review was conducted of patients with bicondylar TPF treated at our level-I trauma center using a staged-treatment protocol from January 2010 to January 2020. Data on baseline characteristics, injuries, treatments, and clinical/radiological results were collected. The QOR was evaluated on CT images after EF and on plain films after ORIF. RESULTS: Sixty-eight patients were eligible for analysis. By our criteria, QOR was good in 57.4% and 70.6% after EF and ORIF, respectively. A squared EF configuration was associated with superior EF QOR (p = 0.032), while better EF QOR was linked to improved ORIF QOR (p = 0.016). No relationship between ORIF delay and ORIF QOR was identified. Postoperative complications were documented in 19 patients. Average ROM at one-year follow-up was 114.9 ± 12.6°, and non-influenced by anterior femoral pin placement. CONCLUSIONS: Staged management of bicondylar TPF resulted in a reasonable rate of complications. A direct relationship between QORs obtained with EF and after ORIF was found. Squared frames were associated with faster and better reductions, regardless of the surgeon's background. Considering our results, we advocate for the wider use of squared EF configurations in these patients.


Subject(s)
Tibial Fractures , Humans , Tibial Fractures/surgery , Tibial Fractures/diagnostic imaging , Male , Retrospective Studies , Female , Middle Aged , Adult , External Fixators , Fracture Fixation, Internal/methods , Fracture Fixation/methods , Aged , Treatment Outcome , Tomography, X-Ray Computed , Tibial Plateau Fractures
4.
J Pers Med ; 13(12)2023 Nov 27.
Article in English | MEDLINE | ID: mdl-38138878

ABSTRACT

Osteomyelitis of the tibia is a challenging condition, particularly when it occurs as a result of trauma. This abstract presents a case study detailing the successful staged treatment of posttraumatic tibial osteomyelitis utilizing a unique combination of rib graft and serratus anterior muscle. This medical abstract presents a case study of a 52-year-old male with a history of heavy smoking and obliterating arteriopathy of the lower limbs. The patient sustained a traumatic open fracture classified as Type IIIA Gustilo Anderson involving one-third of the distal right tibia diaphysis, with an associated right fibular malleolus fracture. The treatment approach comprised multiple stages, focusing on wound management, infection control, and limb salvage. The initial stage involved the application of an external fixation device in the emergency setting. Seven days later, an osteosynthesis procedure was performed using a Kuntscher nail and wire cerclage. However, complications emerged, with wound dehiscence and purulent secretion observed at 14 days postsurgery. Subsequently, secondary suturing was carried out at the 20-day mark. The second stage of the treatment involved implant removal, wide excisional debridement, pulse lavage, osteoclasia, and relaxation of the peroneal malleolus. A monoplane external fixation system was applied. As a part of postoperative care, aspiration therapy with a vacuum pump was administered, along with a 10-day course of vancomycin according to the antibiogram. Positive clinical signs of healing were noted, and sterile cultures confirmed the results. The third stage of the intervention focused on grafting the osteo-muscular defect, utilizing autografts from the rib and serratus anterior muscle. The external fixator was maintained in place during this phase. In the fourth and final stage, after an 8-week integration period of the musculocutaneous flap, the external fixator was removed, and internal fixation was accomplished with a blocked Less Invasive Stabilization System (LISS) plate inserted using the Minimally Invasive Plate Osteosynthesis (MIPO) technique. This case underscores the significance of a multistage approach in managing complex limb injuries, emphasizing the importance of timely intervention, infection control, and innovative techniques for limb salvage and restoration of function.

5.
World Neurosurg ; 178: e254-e264, 2023 Oct.
Article in English | MEDLINE | ID: mdl-37467953

ABSTRACT

OBJECTIVE: Complex cerebral arteriovenous malformations (AVMs) require a combined therapy of endovascular embolization and microsurgical resection to eliminate the lesion and maximize neurological protection, while a deliberate time interval might contribute to optimal clinical outcomes. The present study aimed to explore the feasibility of this paradigm. METHODS: All patients who underwent deliberately planned presurgery embolization and microsurgery resection between 2015 and 2023 were reviewed, with baseline data, postoperative complications, and follow-up outcomes recorded. The modified Rankin scale (mRS) was used to evaluate clinical outcomes, with mRS 0-2 defined as good. RESULTS: A total of 30 patients were included in the study (15 were ruptured AVMs). The median Spetzler-Martin grade of baseline AVMs was 3 (interquartile range: 2-3). The median interval between the last embolization and microsurgery was 5 days (interquartile range: 2.25-7). The complete removal rate was 100%, and the overall permanent complication rate was 16.67%. At the last follow-up, 26 patients achieved mRS 0-2, while 28 had improved or unaltered mRS. The last follow-up mRS significantly improved from baseline and discharge (P = 0.0006 and P = 0.006). The last follow-up mRS decreased by 0.65 for each additional day of time interval before the 4.4-day inflection point (ß = -0.65, P = 0.02) in the AVM ruptured cohort. CONCLUSIONS: The deliberately staged combined procedure of embolization and microsurgery might be a safe and efficacious strategy for Spetzler-Martin grade 2-5 AVMs, 4-5 days might be an appropriate staged time interval for ruptured AVMs, although further studies are needed to substantiate these findings.


Subject(s)
Embolization, Therapeutic , Intracranial Arteriovenous Malformations , Radiosurgery , Humans , Microsurgery/methods , Treatment Outcome , Retrospective Studies , Embolization, Therapeutic/methods , Intracranial Arteriovenous Malformations/diagnostic imaging , Intracranial Arteriovenous Malformations/surgery , Radiosurgery/methods , Rupture/surgery
6.
J Pers Med ; 13(3)2023 Mar 20.
Article in English | MEDLINE | ID: mdl-36983732

ABSTRACT

Staged treatment for pilon fractures is widely accepted. It remains to be discussed how to reduce and fix posterior column fractures while avoiding clinical complications. We provided a staged treatment protocol with detailed surgical techniques for closed AO Foundation/Orthopaedic Trauma Association (AO/OTA) C3 tibial pilon fractures with fibular fractures. In the first stage, the internal fixation of the fibula and distal tibial posterior column is accompanied by an external fixator. After swelling, the medial and anterior columns were fixed via the posteromedial approach in the second stage. We advocate early reduction and fixation of the posterior column and lateral column. The right timing of surgery can ensure well-reduced articular surface and alignment while minimizing soft tissue complications.

7.
Vopr Kurortol Fizioter Lech Fiz Kult ; 99(6. Vyp. 2): 36-43, 2022.
Article in Russian | MEDLINE | ID: mdl-36511465

ABSTRACT

The use of physical factors according to the principles of syndromic-pathogenic approach with the patients suffering from chronic endometritis ensures the restoration of physical and mental health. OBJECTIVE: To evaluate and scientifically substantiate therapeutic effects of staged rehabilitation treatment of the patients with chronic endometritis and reproductive disorders including therapeutic physical factors. MATERIAL AND METHODS: There have been observed 103 patients of childbearing age with chronic endometritis and reproductive disorders. They were divided into two groups by simple randomization. In the control group (n=49), the treatment was based on clinical guidelines and included antibacterial pharmacotherapy and magnetic laser therapy in combination with intravaginal magnetic laser electrical stimulation. In the main group (n=54), this treatment was carried out at the I and II stages, however, at the II stage, a pulsed low-frequency electrostatic field was additionally included in the treatment program; clay therapy was included at the III stage. Clinical monitoring, cytokine status, and regional circulation were used to assess the effectiveness of the treatment. RESULTS: After a staged rehabilitation treatment, the reduction of clinical manifestations was observed in the main group in 89.2% (p<0.01) of cases, while in the control group - in only 76.5% (p<0.01). The patients of the main group had a decrease in the level of pro-inflammatory cytokines on average by 44.0% (p<0.01), whereas the level of anti-inflammatory cytokines increased on average by 29.6% (p<0.01). In the control group the dynamics of cytokine activity indicators was lower by 18-20% (p<0.05). The use of physical factors provided a significant improvement in regional hemodynamics, and in all the cases there was a significant significance in relation to similar indicators in the control group. The effectiveness of personalized programs of rehabilitation treatment of the patients suffering from chronic endometritis and reproductive disorders was 78.4%, and standardized programs - 59.5%. CONCLUSION: Staged rehabilitation treatment of chronic endometritis and infertility with the use of physical factors at each stage ensures the leveling of pain and inflammatory syndromes, improvement of immune status, pelvic hemodynamics, which, in general, provides an increase in the effectiveness of rehabilitation treatment of this category of patients by 18.9% (p<0.05).


Subject(s)
Endometritis , Female , Humans , Endometritis/drug therapy , Chronic Disease , Cytokines , Anti-Bacterial Agents/therapeutic use
8.
Khirurgiia (Mosk) ; (9): 35-39, 2022.
Article in Russian | MEDLINE | ID: mdl-36073581

ABSTRACT

OBJECTIVE/: To objectify patient condition and improve treatment outcomes in patients with benign severe gastroduodenal bleeding. MATERIAL AND METHODS: We analyzed the immediate results of staged surgical treatment of patients with benign severe gastroduodenal bleeding according to the accepted concept of «Damage Control Surgery¼. The Rockall risk scoring system and the Glasgow-Blatchford score (GBS) were used. We preferred two-stage intervention in patients with Rockall score ≥5 and Glasgow-Blatchford score ≥11. RESULTS: Staged approach according to the concept of «Damage Control Surgery¼ in patients with benign severe gastroduodenal bleeding ensures positive results by minimizing surgical trauma and perioperative bleeding, early stabilization of hemostasis and subsequent successful restoration of digestive function. CONCLUSION: The concept of «Damage Control Surgery¼ in patients with benign severe gastroduodenal bleeding can reduce mortality and incidence of postoperative complications.


Subject(s)
Gastrointestinal Hemorrhage , Gastrointestinal Hemorrhage/diagnosis , Gastrointestinal Hemorrhage/etiology , Gastrointestinal Hemorrhage/surgery , Humans , Prognosis , Risk Assessment/methods , Severity of Illness Index , Treatment Outcome
9.
Surg Neurol Int ; 13: 322, 2022.
Article in English | MEDLINE | ID: mdl-35928305

ABSTRACT

Background: Evidence supports endovascular coiling for ruptured intracranial aneurysms (RIAs). However, in some cases, it is difficult to achieve complete occlusion by coiling, such as with wide-neck aneurysms. We report our experience with intentional staged RIA treatment using targeted endovascular coiling at the rupture point in the acute phase, followed by delayed stent-assisted coiling, flow diverter stenting, or surgical clipping. Methods: Consecutive patients with RIAs treated between April 2015 and June 2021 were retrospectively investigated. Clinical characteristics, treatment complications, and patient outcomes data were collected. Results: Among 108 RIAs treated in our hospital, 60 patients underwent initial coiling; 10 patients underwent staged treatment. The aneurysm locations were the anterior communicating artery (n = 5), internal carotid-posterior communicating artery (n = 3), internal carotid-paraclinoid (n = 1), and vertebral artery-posterior inferior cerebellar artery (n = 1). The mean ± standard deviation aneurysmal diameter was 9.6 ± 5.4 mm and the mean aspect ratio was 1.2 ± 0.7. As the second treatment to obliterate blood flow to the neck area, we performed five stent-assisted coiling, two flow-diverter stentings, and three surgical clippings. Only one minor perioperative complication occurred. The median duration between the first and second treatments was 18 days (range, 14- 42 days). Good clinical outcome (modified Rankin scale score 0-2) at 90 days was achieved in 5 (50%) cases. The median follow-up duration was 6.5 months (range, 3-35 months); no rerupture occurred. Conclusion: Intentional staged treatment with a short time interval for RIA was effective and feasible.

10.
Foot Ankle Int ; 43(8): 1092-1098, 2022 08.
Article in English | MEDLINE | ID: mdl-35642680

ABSTRACT

BACKGROUND: The operative treatment of pilon fractures is classically treated with a staged protocol with ankle spanning external fixator, followed by definitive open reduction and internal fixation in order to decrease risk of soft tissue complications and infection. However, treatment of pilon fractures with patrial tibial fixation in addition to ankle spanning external fixation at the time of index procedure may facilitate final fixation while avoiding complications that were associated with acute definitive fixation. METHODS: Retrospective cohort series of 113 patients treated for pilon fractures from September 2012 to November 2018 at a single level 1 trauma center. Charts were reviewed to compare patients who underwent traditional management with a staged protocol and those who had a limited tibial reduction and fixation (LTRF) during the index procedure. The main outcome measurement was time to definitive fixation. RESULTS: Twenty-six percent of patients (29 of 113) had limited tibial reduction and fixation (LTRF) during index surgery. Mean time between index procedure and definitive ORIF was 4.75 days less for LTRF cohort compared to standard stage cohort (10.86 ± 7.44 vs. 15.61 ± 8.59 days, P = .009). The index procedure took on average 51 minutes longer in the LTRF cohort (P < .001), yet definitive procedure operative time was decreased by an average of 98 minutes (P < .001), and overall (index plus definitive) operative duration was shortened by an average of 50 minutes (P = .044). There was no difference in rate of infection between LTRF (3.1%) and traditional treatment (2.5%) (P = .86) or reduction quality (P = .270). There were no nonunions in either treatment group. CONCLUSION: Patients who had LTRF had quicker time to definitive ORIF and decreased operative time for definitive ORIF. There was no difference in infection rate, reduction quality, or nonunion rate between groups. LEVEL OF EVIDENCE: Level IV, Retrospective Cohort Study.


Subject(s)
Ankle Fractures , Tibial Fractures , Ankle Fractures/surgery , External Fixators , Fracture Fixation, Internal/methods , Humans , Retrospective Studies , Tibial Fractures/surgery , Treatment Outcome
11.
Wiad Lek ; 75(2): 372-376, 2022.
Article in English | MEDLINE | ID: mdl-35307661

ABSTRACT

OBJECTIVE: The aim: Improving the results of treatment of patients with acute surgical pathology of the abdominal cavity by correcting intra-abdominal hypertension (IAH). PATIENTS AND METHODS: Materials and methods: The results of examination and treatment of 187 patients with acute surgical pathology, which was accompanied by elevation of IAP. To compare the results, depending on the chosen diagnostic and treatment tactics, patients were divided into two groups: comparison and main. The comparison group (85 people (45,5%) included patients who have been treated with traditional approaches in diagnosis and treatment according to existing treatment protocols. The main group (102 people (54,5%) included patients in whose treatment we additionally used our proposed step-by-step approach in the treatment of IAH. RESULTS: Results: Systemic complications occurred in 12 patients of the main group (11,8%) and in 46 patients of the comparison group (54,1%), while in the second group the frequency of systemic complications was significantly higher (χ2 = 38,6, CI 29,3-53,6, p <0,0001). 20 patients (10,7%) died (2 patients of the main group (1,96%) and 18 patients of the comparison group (21,2%) (χ2 = 17,85, CI 10,4-29,18, p <0,0001). CONCLUSION: Conclusions: Use in the complex treatment of patients with acute surgical pathology of the abdominal cavity, accompanied by IAH, the proposed step-by-step approach has improved treatment outcomes by reducing the incidence of systemic complications from 54,1% to 11,8%, total mortality from 21,2% to 1,96% and postoperative mortality - from 22,4% to 2,4%.


Subject(s)
Pathology, Surgical , Humans , Incidence
12.
Eur J Trauma Emerg Surg ; 48(6): 4349-4356, 2022 Dec.
Article in English | MEDLINE | ID: mdl-33630119

ABSTRACT

PURPOSE: In complex distal radius fractures (DRF), both direct osteosynthesis (one-stage approach) and temporary external fixation as a bridge to definitive osteosynthesis (two-stage approach) are used. Studies directly comparing these two management options are lacking. This study aims to compare the two procedures with regard to complications, and radiological and functional outcomes. MATERIAL: This prospective observational study included all patients presenting with AO OTA C2 or C3 DRF (1) between January 2011 and January 2018. All patients were categorised into two groups according to received treatment: patients who underwent direct definitive osteosynthesis (Group One Stage) and patients who received an external fixator followed by definitive fixation (Group Two Stage). Primary outcome was the Patient-Rated Wrist Evaluation score (PRWE) measured at 1 year follow-up. Secondary outcomes included complications, range of motion (ROM), and radiologic parameters (ulnar variance, radial inclination and volar tilt). RESULTS: A total of 187 patients were included in Group One Stage with a mean age of 55.6 years (SD 17.2), of which 67 had a C2 and 120 a C3 fracture. Group Two Stage consisted of 66 patients with a mean age of 53.7 years (SD 20.4 years), of which 6 patients having a C2 and 60 a C3 fracture. There was no significant difference in complications and median PRWE between Group One Stage (12.0, IQR 2.0-20.0) and Group Two Stage (12.2, IQR 5.5-23.4) (p = 0.189), even after correction for differences in baseline characteristics. The ROM and radiologic parameters did not show any significant differences as well. CONCLUSION: No differences were found in clinical, functional, and radiological outcome between one- and two-staged surgical techniques. It may be concluded that a two-stage approach is a viable and safe alternative.


Subject(s)
Intra-Articular Fractures , Radius Fractures , Humans , Middle Aged , Radius Fractures/diagnostic imaging , Radius Fractures/surgery , Fracture Fixation/methods , External Fixators , Prospective Studies , Bone Plates , Intra-Articular Fractures/diagnostic imaging , Intra-Articular Fractures/surgery , Fracture Fixation, Internal/methods , Range of Motion, Articular , Treatment Outcome
13.
Foot Ankle Int ; 42(11): 1439-1446, 2021 11.
Article in English | MEDLINE | ID: mdl-34130528

ABSTRACT

BACKGROUND: Severely displaced calcaneal fractures can result in considerable morphology derangement and may be accompanied by soft tissue compromise. Delayed operative restoration of the calcaneal morphology may result in acute retensioning of the damaged soft tissue with associated wound-related complications. In this study, we describe a staged treatment of displaced intra-articular calcaneal fractures that uses temporary transarticular Kirschner wire (K-wire) fixation and staged conversion to definite fixation. METHODS: We identified all of the patients who were treated at our institution for calcaneal fractures between 2015 and 2019. A total of 17 patients with 20 calcaneal fractures were selectively treated with 2-stage management. Temporary transarticular K-wire fixation was performed 24 hours after the injury to restore calcaneal morphology and the surrounding soft tissue. After the soft tissue was considered safe, delayed open reduction and internal fixation was performed. The time to definite surgery, radiographic alignment, wound complications, time to radiographic union, and hindfoot American Orthopaedic Foot & Ankle Society (AOFAS) scores were recorded. RESULTS: The average follow-up period was 17 months (range, 12-43). The average Böhler angle increased from a mean of -22 degrees (range, -109 to 25) to 25 degrees (range, 0 to 47) after temporary transarticular K-wire fixation. The mean time from temporary pinning to conversion to definite internal fixation was 20 (range, 10-32) days. There were no immediate postoperative complications. The average time to radiographic union was 13.7 (range, 10-16) weeks. The mean AOFAS score was 87 (range, 55-100). No infections or wound complications were reported during the follow-up period. CONCLUSION: Temporary transarticular pinning for staged calcaneal fracture treatment is safe and effective in restoring the calcaneal morphology. This novel and relatively simple method may facilitate delayed operation and decrease wound-related complications. LEVEL OF EVIDENCE: Level IV, retrospective case series.


Subject(s)
Calcaneus , Foot Injuries , Fractures, Bone , Intra-Articular Fractures , Calcaneus/surgery , Fracture Fixation, Internal , Fractures, Bone/diagnostic imaging , Fractures, Bone/surgery , Humans , Intra-Articular Fractures/diagnostic imaging , Intra-Articular Fractures/surgery , Retrospective Studies , Treatment Outcome
14.
Chaos Solitons Fractals ; 140: 110238, 2020 Nov.
Article in English | MEDLINE | ID: mdl-32868968

ABSTRACT

Focusing on deterministic AIDS model proposed by Hyman (2000) and the detailed data from the World Health Organization (WHO), there are three stages of AIDS process which are described as Acute infection period, Asymptomatic phase and AIDS stage. Our paper is therefore concerned with a stochastic staged progression AIDS model with staged treatment. In view of the complexity of random disturbances, we reasonably take second-order perturbation into consideration for realistic sense. By means of our creative transformation technique and stochastic Lyapunov method, a critical value R 0 H > 1 is firstly obtained for the existence and uniqueness of ergodic stationary distribution to the stochastic system. Not only does it respectively reveal the corresponding dynamical effects of the linear and second-order perturbations to the model, but the unified form of second-order and linear fluctuations is derived. Next, some sufficient conditions about extinction of stochastic system are established in view of the basic reproduction number R 0 . Finally, some examples and numerical simulations are introduced to illustrate our analytical results. In addition, some advantages of our new method and theory are highlighted by comparison with other existing results at the end of this paper.

15.
Chin J Traumatol ; 23(4): 238-242, 2020 Aug.
Article in English | MEDLINE | ID: mdl-32249025

ABSTRACT

PURPOSE: Tibial plateau fracture (TPF) is a devastating injury as it shatters lower articular surface of the largest joint. Apart from bony injury, TPF can lead to great soft tissue envelope compromise which affects the treatment plan and outcome. In the present study, clinical results were assessed in cases of high energy TPFs treated in staged manner. METHODS: Twenty-three (20 males and 3 females) patients of high energy communited TPFs (Schatzker type V and VI) were consecutively treated.1 All the patient had compromise of overlying skin conditions. They were all successively scheduled for staged treatment plan which comprised of application of bridging knee external fixator on the first day of admission and definitive internal fixation after skin and soft tissue overlying the fracture were healed. Schatzker type I, II, III and IV were excluded from the study. Primary survey was done and patient who had head injury, chest and abdominal injury, pelvic injury and contralateral limb injury and open fractures were excluded from the study. The patients were also evaluated in terms of wound complications, axial and rotary alignment of limb, fixation failure, articular congruity and range of motion of the knees and post injury employment. Statistical analysis was done using SPSS software. RESULTS: Maximum follow-up period was 13 months. All the fractures were united at final follow-up. Clinical evaluation was done with the Tegner Lysholm knee scoring scale.2 Excellent results were found in 78% cases and good and fair results in 22% cases. There was significant correlation between range of motion and the Tegner Lysholm knee score (p < 0.001, Pearson correlation coefficient = 0.741). The correlation between the score and the radiographical union duration was significant (p = 0.006, Pearson correlation coefficient = -0.554). CONCLUSION: A staged treatment plan allows healing of soft tissue envelope, with avoidance of dreadful complications such as compartment syndrome and chronic infection. In addition, a staged treatment strategy does not hamper the fracture reduction, bony union and the functional results.


Subject(s)
Fracture Fixation, Internal/methods , Fracture Healing , Fractures, Comminuted/surgery , Tibial Fractures/surgery , Adult , Compartment Syndromes/prevention & control , Connective Tissue/physiopathology , Female , Fractures, Comminuted/physiopathology , Humans , Knee/physiopathology , Male , Middle Aged , Range of Motion, Articular , Tibial Fractures/physiopathology , Treatment Outcome
16.
Chinese Journal of Traumatology ; (6): 238-242, 2020.
Article in English | WPRIM (Western Pacific) | ID: wpr-827843

ABSTRACT

PURPOSE@#Tibial plateau fracture (TPF) is a devastating injury as it shatters lower articular surface of the largest joint. Apart from bony injury, TPF can lead to great soft tissue envelope compromise which affects the treatment plan and outcome. In the present study, clinical results were assessed in cases of high energy TPFs treated in staged manner.@*METHODS@#Twenty-three (20 males and 3 females) patients of high energy communited TPFs (Schatzker type V and VI) were consecutively treated. All the patient had compromise of overlying skin conditions. They were all successively scheduled for staged treatment plan which comprised of application of bridging knee external fixator on the first day of admission and definitive internal fixation after skin and soft tissue overlying the fracture were healed. Schatzker type I, II, III and IV were excluded from the study. Primary survey was done and patient who had head injury, chest and abdominal injury, pelvic injury and contralateral limb injury and open fractures were excluded from the study. The patients were also evaluated in terms of wound complications, axial and rotary alignment of limb, fixation failure, articular congruity and range of motion of the knees and post injury employment. Statistical analysis was done using SPSS software.@*RESULTS@#Maximum follow-up period was 13 months. All the fractures were united at final follow-up. Clinical evaluation was done with the Tegner Lysholm knee scoring scale. Excellent results were found in 78% cases and good and fair results in 22% cases. There was significant correlation between range of motion and the Tegner Lysholm knee score (p < 0.001, Pearson correlation coefficient = 0.741). The correlation between the score and the radiographical union duration was significant (p = 0.006, Pearson correlation coefficient = -0.554).@*CONCLUSION@#A staged treatment plan allows healing of soft tissue envelope, with avoidance of dreadful complications such as compartment syndrome and chronic infection. In addition, a staged treatment strategy does not hamper the fracture reduction, bony union and the functional results.


Subject(s)
Adult , Female , Humans , Male , Middle Aged , Compartment Syndromes , Connective Tissue , Fracture Fixation, Internal , Methods , Fracture Healing , Fractures, Comminuted , General Surgery , Knee , Range of Motion, Articular , Tibial Fractures , General Surgery , Treatment Outcome
17.
Injury ; 50(11): 2103-2107, 2019 Nov.
Article in English | MEDLINE | ID: mdl-31530380

ABSTRACT

INTRODUCTION: In the staged management of tibial pilon fractures, overlap between definitive internal fixation and external fixation pin sites has been investigated as a risk factor for infection with equivocal conclusions. Our aim was to determine if overlap or proximity of definitive internal fixation to external fixation pin sites influences the risk of deep infection. PATIENTS AND METHODS: We reviewed 280 AO/OTA 43B or 43C type distal tibia fractures in 277 patients at two level-one trauma centers. Patients underwent staged management using early temporizing external fixation followed by definitive open reduction and plate fixation. Primary outcome was the association between pin site overlap and the development of deep infection. Secondary outcome was the relationship between development of deep infection and the distance from pin site to definitive fixation. RESULTS: The average duration between external fixation and definitive internal fixation was 14 days. 24% of fractures developed deep infection requiring surgical intervention. There was no association between pin site overlap and the development of deep infection (p = 0.18). There was no relationship between infection and the distance between proximal plate extent and pin site (p = 0.13). DISCUSSION: We identified no association between pin site overlap and the development of deep infection. We suggest that temporizing external fixation pins should be placed so as to obtain optimal stability of the construct with lesser emphasis on aiming to be absolutely outside the zone of future fixation. LEVEL OF EVIDENCE: Level III Therapeutic Retrospective Comparative study.


Subject(s)
Ankle Injuries/surgery , External Fixators/microbiology , Fracture Fixation/methods , Fractures, Open/surgery , Surgical Wound Infection/microbiology , Tibial Fractures/surgery , Wound Healing/physiology , Adult , Ankle Injuries/microbiology , Ankle Injuries/pathology , Bone Nails/microbiology , Debridement/methods , Female , Fracture Fixation/adverse effects , Fracture Fixation/instrumentation , Fractures, Open/microbiology , Fractures, Open/pathology , Humans , Male , Middle Aged , Retrospective Studies , Risk Factors , Surgical Wound Infection/prevention & control , Tibial Fractures/microbiology , Tibial Fractures/pathology , Treatment Outcome
18.
Ophthalmologe ; 116(2): 120-126, 2019 Feb.
Article in German | MEDLINE | ID: mdl-30535856

ABSTRACT

BACKGROUND: Neurotrophic keratopathy is characterized by corneal surface alterations, persistent corneal epithelial defects and/or corneal ulcerations associated with corneal sensory abnormalities. Due to the variable clinical picture neurotrophic keratopathy is often overlooked or diagnosed too late in the course of the disease. OBJECTIVE: Discussion of the clinical picture of neurotrophic keratopathy and recommendations for correct diagnosis. MATERIAL AND METHODS: Analysis of the existing literature and discussion of basic recent publications. RESULTS: Neurotrophic keratopathy is defined as a disease related to alterations in corneal nerves leading to impairment in sensory and trophic function with consequent breakdown of the corneal epithelium affecting health and integrity of the tear film, epithelium and stroma. It can occur with infections, autoimmune diseases, after trauma or ocular surgery, with intracranial neoplasia, in systemic diseases and genetic syndromes. It is classified into three stages: mild (epithelial changes without epithelial defects), moderate (epithelial defects) and severe (stromal involvement). The clinical hallmark is reduced or absent corneal sensation. Therefore, corneal sensitivity testing is essential in the diagnosis of neurotrophic keratopathy along with the patient history, clinical examination and diagnostic tests, such as vital stains and, if possible, in vivo confocal microscopy. CONCLUSION: The correct diagnosis and classification of neurotrophic keratopathy enable a stage-adapted step-ladder therapeutic approach with subsequent reduction of progression and complications of the disease.


Subject(s)
Corneal Diseases , Corneal Dystrophies, Hereditary , Epithelium, Corneal , Keratitis , Trigeminal Nerve Diseases , Cornea , Humans
19.
Arch Orthop Trauma Surg ; 139(1): 53-59, 2019 Jan.
Article in English | MEDLINE | ID: mdl-30328508

ABSTRACT

Staged treatment for severe lower extremity fractures is coming into widespread use, and some reports have described internal fixation (IF) using a temporary external fixator for primary care as an intraoperative retention tool. However, the infection risk with this procedure has not been examined sufficiently. To our knowledge, this article is the first report focusing exclusively on this specific surgical technique. A key point of our developed protocol for internal plate fixation with this technique to avoid postoperative infection is a precisely structured sterilization procedure, which required multiple changes of sterile surgical gloves. In all 19 fractures treated with our set protocol, postoperative infection did not occur. In this regard, however, a goal of definitive IF at the time of initial treatment is essential for this specific procedure. This technique could help orthopaedic trauma surgeons to import a temporary external fixator into the operative field for definitive IF, with less concern regarding risk of infection.


Subject(s)
Bone Plates , External Fixators , Fracture Fixation, Internal , Fractures, Bone/surgery , Leg Injuries/surgery , Cohort Studies , Fracture Fixation, Internal/adverse effects , Fracture Fixation, Internal/instrumentation , Fracture Fixation, Internal/methods , Humans , Surgical Wound Infection
20.
Urologiia ; (6): 87-91, 2019 12 31.
Article in Russian | MEDLINE | ID: mdl-32003174

ABSTRACT

AIM: Buccal mucosa and preputial skin grafts are used for staged urethroplasty in proximal forms of hypospadias in children. Aim of our study was to carry out a comparative histological analysis of preputial skin and buccal mucosa. METHOD: s and materials: Histological analysis of urethral tissue samples from 10 patients with proximal forms of hypospadias was conducted. All patients were treated with staged Brackas technique using free grafts at the Russian Childrens Clinical Hospital from 2013 to 2016. Patients were divided into two groups. In Group I (n=5), preputial skin graft was used for urethroplasty, while in Group II (n=5) buccal mucosa was taken. A histological study of both materials with comparison to a native urethra was performed. RESULTS: In Group I, the histological analysis showed keratinizing multilayered squamous epithelium, large number of dilated sweat and sebaceous glands with signs of inflammation, and hair follicles. In Group II, histological analysis revealed the presence of the typical structure for mucosal tissue, including multilayered flat non-keratinizing epithelium, as well as full absence of sweat, sebaceous glands, and hair follicles. CONCLUSION: comparative histological analysis of neourethra has shown the absence of sweat and sebaceous glands, hair follicles, and areas of chronic inflammation in buccal mucosa vs preputial skin, showing that buccal mucosa is more similar to native urethra. Therefore, buccal mucosa is favored as the material for urethroplasty.


Subject(s)
Hypospadias , Mouth Mucosa , Urethral Stricture , Child , Humans , Hypospadias/pathology , Hypospadias/surgery , Male , Mouth Mucosa/transplantation , Russia , Urethra/surgery , Urologic Surgical Procedures, Male
SELECTION OF CITATIONS
SEARCH DETAIL
...