Major concerns in cleft palate repair are improved speech results and adequate maxillary growth. In these respects, Furlow's double reversing Z-plasty which requires minimal hard palatal dissection and redirects palatal muscles to produce an overlapping muscle sling is theoretically optimal method to close the cleft palate. However, it often requires backcut around the maxillary tubercle even dissection around the pedicle on oral mucosal Z-plasty flap. Raw surface heals secondarily but leads to scarring within the soft palate. In the current study, IIpatients all had incomplete cleft palate and were operated double reversing Z-palatoplasty using intraoperative rapid mucosal expansion (IRME), from November, 1996 till July, 1997. With the IRME, we reduced the incidence of backcut or dissection on the oral mucosal flap. Only three patients need small backcut incision and two of these were closed primarily with V-Y fashion. To examine the histologic changes and expansion rate with the IRME, same procedures were performed to palatal mucosa of three cats. Expanded mucosal size was increased to 33.3% and histologically, change of mucosal architecture was not found except capillary dilatation. As a result, intraoperative mucosal expansion offers sufficient mucosal size, reduce incidence of backcut, therefore minimizes palatal scar formation. Balanced maxillofacial growth and normal occlusion are expected with this procedure.
Animals ; Capillaries ; Cats ; Cicatrix ; Cleft Palate ; Dilatation ; Humans ; Incidence ; Mucous Membrane ; Palatal Muscles ; Palate, Soft

No abstract available.
Lip*

PURPOSE: The purpose of this study was to make an assessment of distal radioulnar joint (DRUJ) instability after the treatment of intra-articular fractures of the distal radius using computed tomography (CT) including contralateral normal wrist. MATERIALS AND METHODS: Twenty-seven intra-articular fractures of the distal radius in twenty-seven patients who had had the surgical treatment were evaluated at follow-up of mean 17.9 months (range, 10-36 months). The DRUJ was assessed with clinical examination, plain radiography, and bilateral CT. CT scans were obtained in 70degrees pronation, neutral, and 70degrees supination. The radioulnar ratio and the subluxation ratio which was modified radioulnar line method were used to measure DRUJ instability. RESULTS: Eight patients were diagnosed as DRUJ instability based on CT assessment. Nine patients were considered to have DRUJ instability in clinical examination, but 4 patients of them were confirmed to have DRUJ instability based on CT measurements. Nonunions of ulnar styloid or malunions of the distal radius were not found to have statistical correlation with DRUJ instability (p>0.05). CONCLUSION: In patient with suspicious DRUJ instability following distal radius fractures, we recommend computed tomography scans of both the injured and uninjured wrists in pronation, neutral, and supination position for objective assessment.
Follow-Up Studies ; Humans ; Intra-Articular Fractures* ; Joint Instability* ; Joints* ; Pronation ; Radiography ; Radius Fractures ; Radius* ; Supination ; Tomography, X-Ray Computed ; Wrist

Complications after a median sternotomy incision, which is used currently in most open heart surgery, are serious, although it is infrequent. Reconstruction of the sternal defect resulting from dehiscence of median sternotomy is still big challenge to the most plastic surgeons. Since vascularized greater omentum was transposed to eliminate mediastinal wound problems, many vascularized regional muscle flaps became mainstay in reconstruction of median sternotomy wound. We treated 13 patients with median sternotomy dehiscence between October of 1993 and March of 1998. In two patients, the wound problems were so confined to superficial tissue that debrided and closed primarily. Eleven patients with deep wound infection were managed with vigorous debridement of all necrotic tissues and resultant defects were covered with regional muscle flaps: rectus myocutaneous flap(3) and bilateral pectoralis advancement flap(8). We used the pectoralis major advancement flaps without counter incision at humeral insertion site and the dissections were limited only medial to the anterior axillary line to preserve the axillary fold. In five patients with larger defects, we elevated muscle and cutaneous flaps separately to make these flaps more mobile. Large portion of two rectus abdominis flaps could not survive, whereas pectoralis advancement flaps had mo special wound problems. Only one patient developed fistula due to remained wire, regardless to flap surgery.
Debridement ; Fistula ; Humans ; Omentum ; Rectus Abdominis ; Sternotomy* ; Thoracic Surgery ; Wound Infection ; Wounds and Injuries

Aneurysm of the internal carotid artery is a rare disease and is known to be associated with congenital arterial anomalies such as neurofibromatosis type I (NF-I). NF-I is an autosomal dominant neurocutaneous disorder characterized by a variety of manifestations that involve the central and peripheral nervous systems, skin, vascular system, and skeleton. In particular, the involvement of vascular abnormalities in NF-I is well known. Any vessel may be affected by this condition, although the renal artery is most frequently involved. The vascular abnormality can be occlusive or an aneurysmal degenerative change. Therefore, symptomatic presentations might assume an indolent pathophysiologic course such as hypertension, or manifest as a catastrophic event such as arterial rupture that could result in sudden death. We report a rare autopsy case of an aneurysmal rupture of the internal carotid artery in a woman with suspected NF-I, who collapsed in her home.
Aneurysm ; Autopsy ; Carotid Artery, Internal ; Death, Sudden ; Female ; Glycosaminoglycans ; Humans ; Hypertension ; Neurocutaneous Syndromes ; Neurofibromatoses ; Neurofibromatosis 1 ; Peripheral Nervous System ; Rare Diseases ; Renal Artery ; Rupture ; Skeleton ; Skin

Anaphylactic deaths are frequently observed at autopsies. Since death associated with medical practice has become social concern, the identification of anaphylactic shock is an important part of forensic medicine. However, autopsy findings of anaphylactic shock are usually non-specific; therefore, the diagnosis of anaphylactic shock must be inferred from collecting data on the past history of the deceased, circumstances of death, and negative autopsy findings. The analysis of serum mast cell tryptase level is a well-known, useful ancillary test for the diagnosis of anaphylactic shock, but is not widely used in daily practice in Korea. We recently encountered 2 autopsy cases of anaphylactic shock and confirmed that analysis of serum mast cell tryptase level was useful for the diagnosis of anaphylactic shock. In this report, we present these 2 autopsy cases of anaphylactic shock, with literature review of the usefulness and limitations of serum mast cell tryptase analysis.
Anaphylaxis ; Autopsy ; Forensic Medicine ; Korea ; Mast Cells ; Tryptases

No accepted standard currently exists to classify asphyxia and define its subtypes. Sauvageau and Boghossian proposed an asphyxia classification system in 2010 that divided asphyxia into suffocation, strangulation, mechanical asphyxia, and drowning. Here, we present a modification of this classification system. We propose to classify asphyxia into four main categories: suffocation, strangulation, mechanical asphyxia, and complicated asphyxia. Suffocation includes smothering and choking as well as confined spaces, entrapment, and vitiated atmosphere. Strangulation is subdivided into hanging, ligature strangulation, manual strangulation, and other unspecified strangulation. Mechanical asphyxia includes positional and traumatic asphyxia. Finally, complicated asphyxia is defined as cases with two or more identifiable mechanisms of asphyxia. In this study, we review autopsy cases from 2012 diagnosed as asphyxia and classify them according to our proposed asphyxia classification system. In 24.7% of cases, the age range was 40-49 years, and 51.9% were men. The most common method of asphyxia was hanging (245 cases, 55.1%), followed by ligature or manual strangulation (53 cases, 11.9%). Most hangings were suicides; smothering, ligature, and manual strangulation were usually homicides. Eighteen cases were complicated asphyxia. This classification provides a simplified, unified, and useful tool to classify and understand deaths due to asphyxia.
Airway Obstruction ; Asphyxia* ; Atmosphere ; Autopsy* ; Classification* ; Confined Spaces ; Drowning ; Homicide ; Humans ; Korea* ; Ligation ; Male ; Suicide

No abstract available.
DNA* ; Laryngeal Neoplasms*

Identifying remains is an important role of forensic medicine. For identification, dating, i.e., estimating the birth year and death year, is expected as useful, however has not yet been practically applied. A dating method using radiocarbon analysis was recently introduced and related studies have been reported. In this study, we conducted radiocarbon analysis on teeth and aimed to develop a formula to estimate the birth year. Fifteen autopsy cases from the National Forensic Service, from December 2014 to December 2020, with known birth year were selected for inclusion. For each case, dentin of the first molar in mandible was taken, radiocarbon analysis was carried out and the corresponding estimated birth year were calculated using the bomb peak curve. The differences between the birth year and the teeth year were determined and analyzed on the influence of variables. A formula for estimating the birth year was developed and the applicability of the formula was determined. The difference between the birth year and the teeth year was 2.6 years on average for cases born before 1963, and 5.7 years for those born after 1963. The estimation formula of birth year was as follows: (Before 1963) Birth year=0.565×(Tooth year)–0.446×(Age)+875.001, (After 1963) Birth year=Tooth year–5.7. This study is meaningful in that it reduced the error by using only the first molars of the lower jaw as a sample, and presented an estimation formula of birth year that can be applied in practice through radiocarbon analysis of teeth.

A medicolegal autopsy is usually performed to determine the cause and manner of death based on judicial or administrative directives applicable in cases of unusual deaths. Social interest in medicolegal autopsies is increasing in recent times. In this study, we investigated medicolegal autopsy rates in Korea and compared these with rates reported by other countries. We obtained data regarding autopsies performed between 2016 and 2020 from the relevant institutions. We calculated the autopsy rate using mortality data from Statistics Korea. The number of medicolegal autopsies performed increased from 8,382 in 2016 to 9,308 in 2020, with an annual increase in numbers. The medicolegal autopsy rate of total deaths increased from 2.98% in 2016 to 3.05% in 2020, and the medicolegal autopsy rates of unusual deaths increased from 12.45% to 13.12% during the same period. However, it repeated an increase and a decrease by year during the study period. In conclusion, the numbers of medicolegal autopsies performed in Korea have been increasing since 2016; however, the medicolegal autopsy rate has been maintained.