• Journal of Korean Foot and Ankle Society
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• v.21 no.1
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• pp.17-20
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• 2017

Purpose: The purpose of this study is to analyze the clinical features of plantar fascia rupture. Materials and Methods: We retrospectively reviewed 312 patients with plantar fasciitis between March 2008 and February 2013. We investigated age, sex, site, visual analogue scale (VAS), body mass index (BMI), characteristics of pain, awareness of rupture, and duration of symptoms. Acute rupture was defined as a rupture that occurred during exercise; chronic rupture was defined as a degenerative rupture after plantar fasciitis. We investigated the frequency of acute and chronic rupture. Results: Among 312 patients, 38 patients (12.2%) were diagnosed with plantar fascia rupture. Thirty-eight patients consisted of 14 men (36.8%) and 24 women (63.2%). The mean age of plantar fascia rupture was $58.29{\pm}12.54years$. The mean VAS score was 5.92 points (3~9 points). The mean BMI was $25.92{\pm}1.59kg/m^2$. Among the 38 patients, 2 patients had acute plantar fascia rupture and 36 had chronic plantar fascia rupture. In 34 patients-out of 36 chronic plantar fascia rupture, there were no subjective symptoms. Conclusion: Chronic rupture of the plantar fascia that occurred after plantar fasciitis was more common than acute rupture. Chronic rupture occurred at approximately 12% of patients treated with plantar fasciitis. In chronic rupture of the plantar fascia, there were no subjective symptoms of rupture. Therefore, we should doubt chronic rupture of plantar fascia when plantar fasciitis is prolonged.

• Journal of Trauma and Injury
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• v.26 no.1
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• pp.34-37
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• 2013

Although a majority of patients with splenic rupture present acutely, up to 15% present with a delayed rupture days to weeks following a substantial abdominal injury. The mortality for patients presenting with acute splenic rupture is approximately 1% whereas that associated with delayed rupture approaches 15%. Although many cases of delayed splenic rupture have been reported, the majority of those reports present delayed splenic rupture associated with an underlying systemic disorder such as liver or kidney disease, or another hematologic disorder. We found a delayed splenic rupture case that documented the normal spleens of young healthy soldiers after trivial abdominal trauma, and we have had successful treatment experience with delayed rupture of a normal spleen after trivial trauma. Therefore, we want to review the literature and discuss the phenomenon of delayed rupture of the spleen following trivial trauma.

• Journal of Ocean Engineering and Technology
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• v.21 no.4
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• pp.28-33
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• 2007

The objective of this paper is to investigate the relationship between the short-term creep rupture time and the creep rupture properties at three different elevated temperatures in STS304 stainless steel. Uniaxial constant stress creep rupture tests were performed on the steel to observe the creep rupture behaviors at the elevated temperatures of 600, 650 and 700, according to the testing matrix. It is very important to predict creep life in practical creep design problems. As one of the series of studies on the statistical modelling of probabilistic creep rupture time and the development of creep life prediction techniques, the relationship between applied stress and creep rupture behaviors, such as creep strain rate and rupture time, were investigated. In addition, the Monkman-Grant relationship was observed between the steady-state creep rate and the creep rupture time. The creep rupture surfaces observed by SEM showed up dimple phenomenon at all conditions.

• Journal of the Korean Society for Precision Engineering
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• v.18 no.6
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• pp.109-114
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• 2001

Forming pressure of the rupture disc has been analyzed theoretically and verified by experiments. Final shape of the rupture disc after forming process is assumed to be hemi-ellipsoid for small height of the rupture disc. The predicted forming pressures are in good agreement with those by experiment. A new simple model has been proposed to predict the burst pressure of the rupture disc. Experimental results show that the proposed model of burst pressure describes the bursting characteristics of the rupture disc very well.

• Archives of Plastic Surgery
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• v.41 no.6
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• pp.734-739
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• 2014

Background Rupture is an important complication of breast implants. Before cohesive gel silicone implants, rupture rates of both saline and silicone breast implants were over 10%. Through an analysis of ruptured implants, we can determine the various factors related to ruptured implants. Methods We performed a retrospective review of 72 implants that were removed for implant rupture between 2005 and 2014 at a single institution. The following data were collected: type of implants (saline or silicone), duration of implantation, type of implant shell, degree of capsular contracture, associated symptoms, cause of rupture, diagnostic tools, and management. Results Forty-five Saline implants and 27 silicone implants were used. Rupture was diagnosed at a mean of 5.6 and 12 years after insertion of saline and silicone implants, respectively. There was no association between shell type and risk of rupture. Spontaneous was the most common reason for the rupture. Rupture management was implant change (39 case), microfat graft (2 case), removal only (14 case), and follow-up loss (17 case). Conclusions Saline implants have a shorter average duration of rupture, but diagnosis is easier and safer, leading to fewer complications. Previous-generation silicone implants required frequent follow-up observation, and it is recommended that they be changed to a cohesive gel implant before hidden rupture occurs.

• Journal of Korean Foot and Ankle Society
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• v.17 no.4
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• pp.309-315
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• 2013

Purpose: The purpose of the study was to investigate five cases with chronic Achilles tendon rupture that occurred after steroid injections. Materials and Methods: In our hospital, we experienced five cases of chronic Achilles tendon rupture from September 2010 to March 2012. All patients had got steroid injection for Achilles tendinitis at the other hospitals, and their heel pain was aggravated when they visited our outpatient department. After treatment, signs and symptoms of Achilles tendon rupture were developed and the diagnosis was confirmed by ultrasonography or magnetic resonance imaging (MRI). Surgical treatment was done for Achilles tendon rupture. Results: There was difference between intra-operative findings of Achilles tendon rupture and usual chronic Achilles tendon rupture. Unlike usual findings of chronic Achilles tendon rupture whose scar tissue or tissue attenuation are found around the defect area of Achilles tendon, there were partial necrosis of tendon severe adhesion with surrounding tissue, extensive defect and longitudinal rupture on ruptured area. Also, severe inflammation of paratenon, granulation and fibrinoid deposit were found on biopsy findings in four cases. Conclusion: Based on review of data about relative risk and benefit of local corticosteroid injection to inflammatory lesion in Achilles tendon, it requires more attention to Achilles tendon rupture following local corticosteroid injection.

• Journal of the Korean Society of Propulsion Engineers
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• v.16 no.3
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• pp.49-56
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• 2012

Rupture disks are a kind of safety device in high pressure equipment and they are used to control rupture pressure in the solid rocket motor. In this paper, a series of rupture experiments was performed using rupture disks made of AISI 316L and rupture pressure of rupture disks was calculated through various assumptions in relation between elasto-plastic material properties and true stress-strain curve. Experiment and FEA indicated rupture pressure is determined by size of rupture disks. As a result of elasto-plastic analysis, only multi-linear stress-strain curve was able to calculate meaningful estimations. Experimental results also showed rupture location are decided by the size of rupture disks. Experimental and FEA results will be applied to control rupture pressure of disks.

• Journal of Korean Neurosurgical Society
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• v.30 no.sup1
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• pp.73-78
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• 2001

Objective : Intraoperative rupture of an intracranial aneurysm can interrupt a microsurgical procedure and jeopardize the patient's chance to favorable outcome. The purpose of this study was to analyse and evaluate intraoperative aneurysmal rupture and render ideal prevention and management to intraoperative rupture. Patients and Methods : The authors retrospectively analysed the results of 609 patients who underwent cerebral aneurysm surgery from January 1991 to December 2000. Results : 1) Intraoperative aneurysmal rupture occurred in 73 of 609 consecutive aneurysm surgery, so the incidence was about 12.0% and it was relatively lower than other reports. 2) Aneurysms arising from anterior communicating artery appeared more prone to intraoperative rupture. 3) The size of aneurysm and timing of operation didn't influence intraoperative aneurysmal rupture and temporary clipping didn't reduce the incidence of intraoperative aneurysmal rupture. 4) Intraoperative aneurysmal rupture occured during three specific periods : (1) dissection stage in 61%, (2) clip application stage in 29 %, (3) predissection stage in 10%. 5) In the patients with intraoperative aneurysmal rupture, surgical outcome was relatively good and there was no significant difference in outcome compared with unruptured group. Conclusion : Our suggestion for prevention methods of intraoperative aneurysmal rupture are as follows : 1) minimal brain retraction, 2) sharp and careful aneurysmal neck dissection, 3) gentle clipping with proper clip selection etc. Management methods after intraoperative aneurysmal rupture are as follows : 1) strong aspiration of bleeding point, 2) rapid application of temporary and/or tentative clip, 3) following rapid dissection of neck and proper clip application, 4) use of encircling clip etc.

• Journal of Korean Neurosurgical Society
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• v.59 no.1
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• pp.6-10
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• 2016

Objective : The objectives of this study was to determine the incidence and outcomes of procedural rupture (PR) during coil embolization of unruptured intracranial aneurysm (UIA) and to explore potential risk factors. Methods : This retrospective study evaluated 1038 patients treated with coil embolization between January 2001 and May 2013 in a single tertiary medical institute. PR was defined as evidence of rupture during coil embolization or post procedural imaging. The patient's medical records were reviewed including procedure description, image findings and clinical outcomes. Results : Twelve of 1038 (1.1%) patients showed PR. Points and time of rupture were parent artery rupture during stent delivery (n=2), aneurysm rupture during filling stage (n=9) and unknown (n=1). Two parent artery rupture and one aneurysm neck rupture showed poor clinical outcomes [modified Rankin Scale (mRs) >2] Nine aneurysm dome rupture cases showed favorable outcomes ($mRS{\leq}2$). Location (anterior cerebral artery) of aneurysm was associated with high procedural rupture rate (p<0.05). Conclusion : The clinical course of a patientwith procedural aneurysm rupture during filling stage seemed benign. Parent artery and aneurysm neck rupture seemed relatively urgent, serious and life threatening. Although the permanent morbidity rate was low, clinicians should pay attention to prevent PR, especially when confronting the anterior cerebral artery aneurysm.

• Journal of Korean Foot and Ankle Society
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• v.27 no.2
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• pp.55-57
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• 2023

Purpose: Tibialis anterior tendon rupture is uncommon and usually caused by laceration. Rupture with an open window is often considered simple laceration, and thus diagnosis is often overlooked or delayed. The purpose of this study was to analyze the clinical features of tibialis anterior tendon rupture. Materials and Methods: Twenty-two patients treated for tibialis anterior tendon rupture from March 2015 to December 2019 were examined. Age, sex, rupture etiology, rupture location, and diagnostic and treatment delays were investigated. Results: Mean patient age was 45.7 years, and there were 14 males and 8 females. In 18 cases, rupture was caused by laceration and in 4 by spontaneous rupture. Of the 18 cases caused by laceration, 8 were lawnmower related, 8 were glass injuries, and 2 were caused by crush or degloving injuries, respectively. Three of the 4 spontaneous rupture cases and 4 of the 18 caused by laceration were overlooked. Conclusion: Tibialis anterior tendon rupture is rare and is easily overlooked. Close physical examination is essential to arrive at a correct initial diagnosis in patients with acute or chronic rupture, and greater care is needed in cases of glass injury.