scholarly journals Pure isolated medial talonavicular joint dislocation following low-energy trauma: a case report

2021 ◽  
Vol 49 (4) ◽  
pp. 030006052110046
Author(s):  
Ki Jin Jung ◽  
Hong Seop Lee ◽  
Hee Jun Chang ◽  
Young Koo Lee ◽  
Eui Dong Yeo ◽  
...  
Keyword(s):  
Bone Fractures ◽  
Three Dimensional ◽  
High Energy ◽  
Low Energy ◽  
Daily Activities ◽  
Talonavicular Joint ◽  
Ankle Inversion ◽  
Medial Dorsal ◽  
The Right

Midtarsal dislocations are relatively rare injuries secondary to high-energy trauma and are typically accompanied by disruption of ligamentous structures and fractures of the midfoot. We herein present a case of a pure isolated medial swivel dislocation of the talonavicular joint (TNJ) that was sustained following low-energy trauma without an associated fracture. A 78-year-old woman visited our emergency department with severe pain in the midfoot area of the right foot without neurovascular deficits. She had sustained this injury after severe ankle inversion while going downstairs. Plain radiographs of the right foot showed that the navicular was dislocated medially on the talus; no other malalignments were present. Three-dimensional computed tomography revealed dislocation of the TNJ, but no other tarsal or midtarsal bone fractures or dislocations. A medial dorsal incision was made to expose the TNJ. The dorsal talonavicular ligament was ruptured and interposed between the navicular and talus. The ligament was removed and the TNJ was reduced. The clinical outcome at the 1-year follow-up was satisfactory with no limitations in daily activities. In summary, we have reported an extremely rare case of a pure isolated medial TNJ dislocation in which the interposed dorsal talonavicular ligament served as an obstacle to reduction.

Proctor-guided virtual reality–enhanced three-dimensional video-assisted thoracic surgery: an excellent tutoring model for lung segmentectomy

2020 ◽  
pp. 030089162097217
Author(s):  
Francesco Guerrera ◽  
Samanta Nicosia ◽  
Lorena Costardi ◽  
Paraskevas Lyberis ◽  
Federico Femia ◽  
...  
Keyword(s):  
Early Stage ◽  
Thoracoscopic Surgery ◽  
Three Dimensional ◽  
Resection Margins ◽  
Early Stage Lung Cancer ◽  
Video Assisted ◽  
Tissue Sparing ◽  
The Right ◽  
Colon Rectal Cancer

Objective: Lung segmentectomy using video-assisted thoracoscopic surgery (VATS) is an effective strategy to treat early-stage lung cancer. The objective of this case report is to show the efficacy of Hyper Accuracy 3D™ (HA3D) reconstruction as a tool for trainee surgeons and expert surgeons to perform complex procedures. Methods: An 84-year-old man was treated for colon-rectal cancer. During follow-up, a pulmonary nodule on the right anterior upper lobe suspected for intestinal metastasis was revealed by a computed tomography scan. According to functional tests and radiology, a right anterior upper lobe segmentectomy was planned. HA3D lung reconstruction was used during surgery. Results: Using the HA3D virtual model, the procedure was performed with healthy tissue sparing, ensuring safe resection margins. No postoperative morbidities were noted. The patient referred good pain control. The hospital stay was 6 days. Conclusions: VATS segmentectomy is a technically demanding procedure. HA3D lung reconstruction can help surgeons effectively perform the resection, aiding at individuating intersegmental planes, bronchi, and vessels, guaranteeing oncologic radicality and safe surgical margins, and preserving respiratory function.

scholarly journals Extensive Lateral Release and Medial Patellofemoral Ligament Reconstruction in 25 Years of Chronic Fixed Lateral Patellar Dislocation: A 5-Year Follow-Up Case Report

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Andri M. T. Lubis ◽  
Petrus Aprianto ◽  
Yudistira P. Siregar
Keyword(s):  
Patellar Dislocation ◽  
Ligament Reconstruction ◽  
Medial Patellofemoral Ligament ◽  
Daily Activities ◽  
Lateral Release ◽  
Medial Patellofemoral Ligament Reconstruction ◽  
Lateral Dislocation ◽  
Lateral Patellar Dislocation ◽  
The Right

Lateral dislocation of the patella is not uncommon and may impede daily activities as this causes compressive dysfunction and instabilities. Most cases of patellar lateral dislocation are due to damage to the medial patellofemoral ligament (MPFL), either rupture of detachment of the patella or femoral attachment. MPFL reconstruction alone was considered adequate for the treatment of this condition. We present a case of a 49-year-old male with chronic posttraumatic lateral patellar dislocation of the right knee of 25 years, which we treated with extensive lateral release and right medial patellofemoral ligament reconstruction with 5-year follow-up data.

Electrochemically Reduced Ultra-high Mass Loading Three-Dimensional Carbon Nanofiber Network: A Reproducible and Stable Cell Voltage of 2.0 V and High Energy Density Symmetric Supercapacitor

Nanoscale ◽  
2021 ◽  
Author(s):  
Gunendra Prasad Ojha ◽  
Bishweshwar Pant ◽  
Jiwan Acharya ◽  
Mira Park
Keyword(s):  
Energy Density ◽  
Carbon Nanofiber ◽  
Three Dimensional ◽  
Cell Voltage ◽  
High Energy ◽  
Low Energy ◽  
High Energy Density ◽  
High Mass ◽  
Mass Loading ◽  
Symmetric Supercapacitor

Commercial supercapacitors need high mass loading of more than 10 mg cm-2 and a high working potential window to resolve the low energy density concern. Herein, we have demonstrated a...

GROWTH AND STRUCTURE OF hcp Ti FILMS ON Al(111) SURFACES

1999 ◽  
Vol 06 (05) ◽  
pp. 775-780 ◽  
Author(s):  
Y. W. KIM ◽  
G. A. WHITE ◽  
N. R. SHIVAPARAN ◽  
M. A. TETER ◽  
R. J. SMITH
Keyword(s):  
Photoelectron Spectroscopy ◽  
Film Growth ◽  
Three Dimensional ◽  
High Energy ◽  
Low Energy ◽  
Ion Scattering ◽  
Island Growth ◽  
X Ray ◽  
Low Energy Ion Scattering ◽  
Ti Films

The structure of thin Ti films grown on Al(111) surfaces at room temperature has been studied using high energy ion scattering/channeling (HEIS), X-ray photoelectron spectroscopy (XPS), low energy ion scattering (LEIS), low energy electron diffraction (LEED) and X-ray photoelectron diffraction (XPD). Our results show that Ti grows in the SK mode on the Al(111) surface. Ti atoms form a two-dimensional overlayer up to a deposition of about 2 ML Ti, followed by three-dimensional island growth with additional Ti deposition. The Ti islands cover the surface completely at about 12 ML of Ti deposition. XPD results show that the Ti overlayer has a well-ordered hcp Ti(0001) structure on the fcc Al(111) surface, in remarkable contrast to the fcc Ti film growth observed on Al(001) and Al(110) surfaces.

scholarly journals Structured Integration and Alignment Algorithm: A Tool for Personalized Surgical Treatment of Tibial Plateau Fractures

2021 ◽  
Vol 11 (3) ◽  
pp. 190
Author(s):  
Flaviu Moldovan ◽  
Adrian Gligor ◽  
Tiberiu Bataga
Keyword(s):  
Surgical Treatment ◽  
Tibial Plateau ◽  
Bone Fractures ◽  
Three Dimensional ◽  
Alignment Algorithm ◽  
Clinical Workflow ◽  
Fracture Fragment ◽  
Schatzker Type ◽  
Plateau Fracture ◽  
The Right

The planning of the surgical treatment in orthopedics, with the help of three-dimensional (3D) technologies, arouses an increasing scientific interest. Scientific literature describes some semi-automatic reconstructive attempts at fragmented bone fractures, but the matching algorithms presented are likely to improve. The aim of this paper is to develop a new method of aligning fragments of comminutive fractures. We have created a structured integration process and an alignment algorithm integrated in a clinical workflow for personalized surgical treatment of fractures. The provided solution is able to align the surfaces of bone fragments derived from the segmentation process of volumetric tomographic data. Positional uncertainties are eliminated interactively by the user, who selects the corresponding pairs of fracture surfaces. The final matching and the right alignment are performed automatically by the innovative alignment algorithm. The paper solves a challenging problem for the reconstruction of fractured bones, namely the choice of the optimal matching option from the situation in which surface portions of a fracture fragment correspond to multiple high fragments. The method is validated in practice for preoperative planning of a 49-year-old male patient who had a tibial plateau fracture of Schatzker type VI.

scholarly journals Three-Dimensional Computed Tomography Follow-Up on Spontaneous Bone Healing after Excision of Periorbital Dermoid Cyst: A Case Report

2021 ◽  
Vol 17 (3) ◽  
pp. 213-217
Author(s):  
Hannara Park ◽  
Jaemin Seong ◽  
Hyochun Park ◽  
Hyeonjung Yeo
Keyword(s):  
Computed Tomography ◽  
Dermoid Cyst ◽  
Three Dimensional ◽  
Surgical Excision ◽  
Complete Recovery ◽  
Bony Defect ◽  
Palpable Mass ◽  
Nodular Lesions ◽  
The Right

Dermoid cysts are among the most common periorbital and orbital tumors presenting in childhood. Several studies have shown that dermoid cysts may deform adjacent bones; however, few studies have followed the course of bone regeneration after the excision of a cyst. We report a case of a 29-month-old female infant who presented with a palpable mass over her right lateral eyebrow. Ultrasonography findings suggested a dermoid cyst, and computed tomography revealed a 2.1-cm round bony defect in the right zygoma. After surgical excision of the dermoid cyst, we successfully applied fibrin sealant to eliminate the dead space. Pathological findings showed nodular lesions with flat cystic walls containing lamellated keratin and sebaceous glands, supporting the diagnosis of dermoid cyst. At 6 months postoperatively, a follow-up computed tomography scan confirmed complete recovery of the bone defect in the right zygoma.

scholarly journals Giant renal artery aneurysm: A case report

2015 ◽  
Vol 87 (2) ◽  
pp. 169 ◽  
Author(s):  
Luca Cindolo ◽  
Manuela Ingrosso ◽  
Piergustavo De Francesco ◽  
Pietro Castellan ◽  
Francesco Berardinelli ◽  
...  
Keyword(s):  
Renal Artery ◽  
Three Dimensional ◽  
Artery Aneurysm ◽  
Uneventful Recovery ◽  
Renal Artery Aneurysm ◽  
Renal Arteriovenous Malformation ◽  
The Right ◽  
Midline Approach ◽  
Safe Approach

A case of a 12 cm giant renal artery aneurysm (RAA) in an 59-year-old woman is reported. The patient was referred to our hospital for flank pain and spot hematuria. Ultrasonography (US) revealed some wide lacunar areas in her right kidney and a thin cortex. Three-dimensional computed tomography (3D-CT) revealed a giant right renal arteriovenous malformation (AVM). AngioCT scan showed a pervious right renal artery. The cavities of the right kidney were dilated and the parenchyma was markedly reduced. Two months later the patient underwent an open resection of the aneurysm and a right nephrectomy. She had an uneventful recovery and a healthy status (last follow-up: 9 month). In this particular case, a safe approach is the transabdominal approach since the aneurysm was very large, friable, and located on the right side. This report confirms the opportunity of a planned nephrectomy once there is adequate renal reserve in the opposite kidney using a midline approach.

scholarly journals Functional outcome of traumatic spinopelvic instabilities treated with lumbopelvic fixation

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Emre Yilmaz ◽  
Martin F. Hoffmann ◽  
Alexander von Glinski ◽  
Christiane Kruppa ◽  
Uwe Hamsen ◽  
...  
Keyword(s):  
Functional Outcome ◽  
High Energy ◽  
Low Energy ◽  
Trauma Patients ◽  
Concomitant Injuries ◽  
High Energy Trauma ◽  
Lumbopelvic Fixation ◽  
Energy Group ◽  
And Function

Abstract The aim of this study was to assess the functional outcome after lumbopelvic fixation (LPF) using the SMFA (short musculoskeletal functional assessment) score and discuss the results in the context of the existing literature. The last consecutive 50 patients who underwent a LPF from January 1st 2011 to December 31st 2014 were identified and administered the SMFA-questionnaire. Inclusion criteria were: (1) patient underwent LPF at our institution, (2) complete medical records, (3) minimum follow-up of 12 months. Out of the 50 recipients, 22 questionnaires were returned. Five questionnaires were incomplete and therefore seventeen were included for analysis. The mean age was 60.3 years (32–86 years; 9m/8f) and the follow-up averaged 26.9 months (14–48 months). Six patients (35.3%) suffered from a low-energy trauma and 11 patients (64.7%) suffered a high-energy trauma. Patients in the low-energy group were significantly older compared to patients in the high-energy group (72.2 vs. 53.8 years; p = 0.030). Five patients (29.4%) suffered from multiple injuries. Compared to patients with low-energy trauma, patients suffering from high-energy trauma showed significantly lower scores in “daily activities” (89.6 vs. 57.1; p = 0.031), “mobility” (84.7 vs. 45.5; p = 0.015) and “function” (74.9 vs. 43.4; p = 0.020). Our results suggest that patients with older age and those with concomitant injuries show a greater impairment according to the SMFA score. Even though mostly favorable functional outcomes were reported throughout the literature, patients still show some level of impairment and do not reach normative data at final follow-up.

scholarly journals Decreased complications but a distinctive fixation loosening mechanism of fully threaded headless cannulated screw fixation for femoral neck fractures in young adults

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Hui Sun ◽  
Lin-Yuan Shu ◽  
Matthew C. Sherrier ◽  
Yi Zhu ◽  
Jing-Wen Liu ◽  
...  
Keyword(s):  
Young Adults ◽  
Femoral Neck ◽  
Young Patients ◽  
High Energy ◽  
Femoral Neck Fractures ◽  
Low Energy ◽  
Cannulated Screws ◽  
Fixation Failure ◽  
Fracture Patterns

Abstract Background Despite being a commonly encountered injury in orthopedic practice, controversy surrounds the methods of optimal internal fixation for femoral neck fractures (FNF) in young patients. The objective of the present study is to compare complication rates and failure mechanisms for surgical fixation of FNF using fully threaded headless cannulated screws (FTHCS) versus partial threaded cannulated screws (PTS) in young adults. Methods A total of 75 patients (18–65 years old) with FNF were prospectively treated with close reduction and internal fixation using three parallel FTHCS and compared to a historical control case-matched group (75 patients) with FNF treated by PTS fixation. After 2 years follow-up, rates of fixation failure (including varus collapse, fracture displacement, and femoral neck shortening), nonunion, and avascular necrosis of the femoral head (ANFH) were compared between the two cohorts. The demographic, follow-up information, and radiological images were assessed by independent blinded investigators. Results Patient demographics and fracture patterns were similar in the two patient groups. The overall fixation failure rates were 8% (6/75) in the FTHCS cohort, which was significantly lower than the 25.3% (19/75) seen in the PTS group. Rates of nonunion and ANFH were significantly lower in the FTHCS group when compared to the PTS control group. When stratified by injury severity (high-energy vs. low-energy fractures), the rate of fixation failure was significant lower with the use of FTHCS when compared with PTS for high-energy fractures while there was no difference in the rates of nonunion or ANFH for high or low-energy fracture patterns. Unique to the FTHCS cohort was an atypical screw migration pattern with varus collapse (6/75, 8%). Conclusions The results show that FTHCS fixation could significantly reduce the complication rate of young patients with FNF, especially in high-energy fracture patterns (Garden III–IV, Pauwels III, or vertical of the neck axis (VN) angle ≥ 15°). There was also confirmation that the modes of fixation loosening in the FTCHS group, including screw “medial migration” and superior cutout, were different from the screw withdrawal pattern seen in the PTS cohort. Trial registration The study was retrospectively registered at www.Chictr.org.cn (ChiCTR-IPR-1900025851) on September 11, 2019.

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