187,570 research outputs found
Three-Dimensional Heat Map: The OTA/AO Type 43C Pilon Fracture Lines Distribution
No full textYuling Gao,1 Yanrui Zhao,1 Hanzhou Wang,1 Xiaopei Xu,1 Zhexian Cheng,2 Tianchao Lu,1 Yang Liu,1 Junlin Zhou1 1Orthopedics Department, Affiliated Beijing Chaoyang Hospital of Capital Medical University, Bejing, People’s Republic of China; 2Preventive Dentistry Department, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou, Guangdong Province, People’s Republic of ChinaCorrespondence: Junlin Zhou; Yang Liu, Beijing Chaoyang Hospital, Capital Medical University, Gongtinan Road 8#, Beijing, 100020, People’s Republic of China, Email [email protected]; [email protected]: This study aimed to create three-dimensional heat map and study the characteristic of fracture lines and represented fragments of OTA/AO type 43C pilon fractures.Methods: CT scan was performed in105 fractures diagnosed with OTA/AO type 43C pilon fractures between January 2017 and December 2022. Three-dimensional pilon fracture maps were created and converted into fracture heat maps. CT scan graphic parameters including the fracture line height, α angle, β angle, the ratio of the area and size of bone fragment represented by the fracture line to the total articular surface were measured.Results: The study included 105 patients with 91 males and 14 females. The fractures included C1 (n=16), C2 (n=23), and C3 (n=66). There was no statistically different among the most parameters except in the fracture-line height of the anterior fracture line (p=0.03) and the sagittal fracture line (p=0.02) between C2 and C3 pilon fractures. The average size of the anterolateral fragment, occupied approximately 13.5% of the articular surface area, was (11.5± 2.8) mm × (20.5± 6.3) mm with the average height of 29.8 mm. The average size of the posterolateral fragment, occupied approximately 13.0% of the articular surface area, was (15.7± 4.6) mm × (19.3± 4.0) mm with the average height of 19.1 mm.Conclusion: This study demonstrates that the articular surface fracture lines in the C type pilon fracture are formed by fixed main fracture lines. The understand of morphological and distribution characteristics of the fracture lines and size of fragments in OTA/AO type 43C pilon fractures would help the surgeons take suitable approach and fixation.Keywords: pilon fractures, heat map, three-dimensional reconstruction, classificatio
Clinical application of arthroscopy-assisted minimally invasive therapy in Chinese elderly with type III Pilon fracture
No full textPeiming Liu, Yong Guo, Ying Wen, Wei Wang The Eleventh Department of Orthopaedics, The Fifth Hospital of Harbin, Harbin, China Objective: Pilon fracture is so complex that its therapy poses a great challenge to surgeons. Few studies have compared arthroscopy-assisted minimally invasive therapy and external fixation combined with limited internal fixation (EFLIF), and an optimal choice of surgical therapy remains unclear in patients with type III Pilon fracture. Moreover, to our knowledge, very few studies have specifically evaluated arthroscopy-assisted minimally invasive therapy in Chinese elderly with type III Pilon fracture. The current study was performed to observe the clinical application of arthroscopy-assisted minimally invasive therapy, compared with EFLIF, in Chinese elderly with type III Pilon fracture.Methods: There were 230 Chinese elderly with type III Pilon fracture assigned to undergo EFLIF (group A, n=115) or arthroscopy-assisted minimally invasive therapy (group B, n=115), and followed up for 1 year after surgery.Results: Age, sex, causes, sides and types of Pilon fractures were not different between the two groups (P>0.05 for all). Compared with EFLIF, arthroscopy-assisted minimally invasive therapy achieved a better reduction result, bone union and Mazur system (P<0.05 for all). Patient satisfaction, screw loosening and infection prevalence were not different between the two groups (P>0.05 for all). There was no skin necrosis in the two groups. Traumatic arthritis had a significantly lower prevalence in participants with arthroscopy-assisted minimally invasive therapy than EFLIF (P<0.05 for all).Conclusion: Compared with EFLIF, arthroscopy-assisted minimally invasive therapy for type III Pilon fracture significantly improved reduction result, bone union and functional status, and decreased traumatic arthritis, demonstrating that arthroscopy-assisted minimally invasive therapy is an optimal choice for type III Pilon fracture in Chinese elderly. Keywords: arthroscopy-assisted minimally invasive therapy, Chinese elderly, external fixation combined with limited internal fixation, type III Pilon fractur
Summary of assembly metrics after Pilon improvement.
No full text<p>Summary of assembly metrics after Pilon improvement.</p
Summary assembly statistics before and after Pilon improvement.
No full text<p>In all cases the assemblies were more contiguous, contained more bases, and had fewer gaps and errors after Pilon improvement.</p><p>Summary assembly statistics before and after Pilon improvement.</p
Hybrid and trans-articular external fixation in the minimally invasive treatment of pilon fractures
No full textHybrid and trans-articular external fixation in the minimally invasive treatment of pilon fracture
Incidence of tendon entrapment and dislocation with calcaneus and pilon fractures on CT examination
No full textTo examine the association between tibial pilon and calcaneal fracture classification and tendon entrapment or dislocation.After institutional review board approval, we retrospectively reviewed consecutive CT scans with calcaneal or pilon fractures from 5 years at a level 1 trauma center. We categorized calcaneal fractures according to the Sanders classification, and pilon fractures according to the Ruedi and Allgower and the Arbeitsgemeinschaft für Osteosynthesefragen-Orthopaedic Trauma Association (AO-OTA) classifications. Ankle tendons were assessed for dislocation or entrapment. Fisher’s exact test was used for statistical analysis with significance at p < 0.05.A total of 312 fractures (91 pilon only, 193 calcaneal only, and 14 ankles with ipsilateral pilon and calcaneal fractures) were identified in 273 patients. Twenty-two pilon, 42 calcaneal, and nine combination fractures were associated with 99 occurrences of tendon entrapment or superior peroneal retinacular injury. Such findings were associated with multiple fractures (p = 0.002). Multifragmentary pilon fractures were associated with posterior tibial and flexor digitorum longus tendon entrapment (p < 0.0001 and p = 0.0003 for Ruedi/Allgower and AO-OTA, respectively), and multifragmentary Sanders type 3 or 4 calcaneal fractures were associated with superior peroneal retinacular injury (p = 0.0473) compared to simple fracture patterns. Thirty-nine percent of tendon entrapments or retinacular injuries were prospectively identified, 85 % by musculoskeletal radiologists (p < 0.0001).Approximately 25 % of calcaneal and pilon fractures were retrospectively identified to contain posteromedial tendon entrapment or superior peroneal retinacular injury. Radiologists should meticulously search for such injuries, particularly when analyzing multifragmentary and multiple fractures
Example Pilon generated genome browser tracks.
No full text<p>This region was flagged by Pilon as containing a possible local mis-assembly, but Pilon was unable to determine a fix due to a tandem repeat sequence. The tracks shown here include: <i>Pilon Features</i> track indicating the extent of the region flagged by Pilon as containing a potential mis-assembly, <i>Valid Coverage</i> track indicating the sequence coverage of valid read pair alignments excluding the clipped portions of the alignments, <i>Clipped Alignments</i> track indicating the number of reads soft-clipped at each location, <i>Pct Bad Alignments</i> track indicating the percentage of the total reads aligned to each location which are not part of <i>Valid Coverage</i>. These tracks are created with the ‘—tracks' command-line option. Together, these tracks reveal the true bounds of the mis-assembly, and indicate that there are likely missing copies of the tandem repeat in the draft assembly. In this case, manual analysis revealed the draft assembly was missing two of three full copies of a 57-base tandem repeat.</p
Un bas-relief de Germain Pilon imité à Mons
No full textSerbat Louis. Un bas-relief de Germain Pilon imité à Mons. In: Bulletin Monumental, tome 76, année 1912. p. 168
Is Psychiatric Illness Associated With Worse Outcomes Following Pilon Fracture?
No full textBACKGROUND: Patients with psychiatric comorbidities represent a significant subset of those sustaining pilon fractures. The purpose of this study is to examine the association of psychiatric comorbidities (PC) in patients with pilon fractures and clinical outcomes. METHODS: A multi-institution, retrospective review was conducted. Inclusion/exclusion criteria were skeletally mature patients with a tibia pilon fracture (OTA Type 43B/C) who underwent definitive fracture fixation utilizing open reduction internal fixation (ORIF) with a minimum of 24 weeks of follow-up. Patients were stratified into two groups for comparison: PC group and no PC group. RESULTS: There were 103 patients with pilon fractures that met the inclusion/exclusion criteria of this study. Of these patients, 22 (21.4%) had at least one psychiatric comorbidity (PC) and 81 (78.6%) did not have psychiatric comorbidities (no PC). There was a higher percentage of female patients (PC: 59.1% vs no PC: 25.9%, p=0.0.005), smokers (PC: 40.9% vs no PC: 16.0%, p=0.02), and drug users (PC: 22.7% vs no PC: 8.6%, p=0.08) amongst PC patients. Fracture comminution (PC: 54.5% vs no PC: 32.1%, p=0.05) occurred more frequently in PC patients. The PC group had a higher incidence of weightbearing noncompliance (22.7% vs 7.5%, p=0.04) and reoperation (PC: 54.5% vs no PC: 29.6%, p=0.03). CONCLUSION: Patients with psychiatric comorbidities represent a significant percentage of pilon fracture patients and appear to be at higher risk for postoperative complication. Risk factors that may predispose patients in the PC group include smoking/substance use, weightbearing noncompliance, and fracture comminution. Level of Evidence: II
Treatment of pilon fractures with low profile plates
No full textBackground: Treatments of pilon fracture is an important operative challenge due to high prevalence of post-operative complications. In this paper, we aimed to evaluate the complications of the use of low profile plates for pilon fractures. Methods: This clinical trial that was performed in 2017-2021 in Isfahan on 27 patients with pilon fractures. Demographic data of patients such as age, gender, type of pilon fracture and baseline pathology of pilon fractures were collected. Patients were treated using low profile plates under surgical procedures. Within 1 month, 3 months and 6 months after surgeries, patients were visited and assessed regarding superficial wound infections, deep wound infections, and evidence of osteomyelitis, vascular injuries, non-union and mal-union using both physical examinations and imaging studies via X-ray. We also measured the functions of cases using The American Orthopedic Foot and Ankle Score (AOFAS) questionnaire. Results: Most cases had 3 days (33.3) and 5 days (33.3) of hospitalization. Superficial wound infection was observed in 7 cases (26). Deep surgical site infections were observed in 2 cases (7.4) and we had only 1 case of osteomyelitis (3.7). No vascular injuries were observed in this study. Evaluation of union among patients showed that 2 cases (7.4) had non-union and 5 cases (18.5) had malunion in the anterior-posterior axis, but none of the patients had malunion in the coronal axis. Based on AOFAS questionnaire, the mean score in patients was 88.36 +/- 14.20. Conclusion: Treatments of pilon fractures by low profile plates have similar complications compared to other treatment options
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