Bitemarks and 3D scanner: An objective comparison for bitemarks. A pilot study.

The marks left by the bite of a subject (bitemark) represent an unequivocal character, being useful in identifying the possible perpetrator of a crime. To date, the analysis of bitemarks is mainly based on the direct vision of photographic finds and on the visual comparison with the teeth of the hypothetically responsible person. However, the bitemark also retains three-dimensional characteristics detectable with a 3D scanner. In this pilot study, an innovative method of bitemark analysis, utilizing a three-dimensional scanner and some software, will be introduced, enabling a quantitative comparison of bitemarks and their corresponding human dentitions. For this purpose, 10 complete plaster models (human dentitions) of 10 adult subjects were used to make 20 experimental bitemarks on dentistry wax. All materials were individually scanned with the iTero® 3D scanner and reworked with MeshMixer software. A visual analysis of the characteristics and a computerized analysis with the CloudCompare software were also performed. Study showed a different trend of the distribution curves of the points which were obtained comparing the human dentition and coincident and non-coincident bitemarks. Current results support that the intraoral 3D scanner allows the fast record and the preservation of the three-dimensional characteristics of the bitemarks, and it allows computerized analyses to be carried out.

A case of lethal varicose vein rupture caused by massive leiomyoma.

Varicose veins are a common and benign disease, especially affecting the lower limbs of the elderly. This pathology can exhibit several complications, which in the majority of cases do not require medical treatment; life-threatening conditions are possible but extremely rare. We present here a suspected murder case in which a woman was found dead in her home with a large amount of blood soiling the floor and the furniture of her house. Death scene investigation (DSI) with body inspection and bloodstain pattern analysis (BPA) were not exhaustive in excluding a homicide, and the prosecutor asked for a forensic autopsy. During the dissection, a uterine neoplasia, which altered the lower limb venous system, was detected, thus allowing to reconstruct the physio-pathological mechanism of the formation and rupture of the varicose vein.

Seventeen-Year Medical Professional Liability Experience in a Level III University Hospital.

INTRODUCTION: In recent decades, the number of medical professional liability disputes has grown exponentially, becoming a well-studied aspect of public healthcare. Legal medicine is an essential tool in managing this phenomenon. METHODS: This article reports the results of the analysis of disputes for medical professional liability in a Level III University Hospital in Italy. The study covers the time period from 01.01.2003 to 31.12.2019. RESULTS: About 33% of claims have been compensated. Those claims fall within the following categories: 37% in the surgical field, 17% in the field of internal medicine, and 35% in the emergency care field. As for the types of a medical mistake, compensation was awarded in 30% of diagnostic error cases, 26% of therapeutic error cases, 47% of execution error cases, and 55% of organizational deficiency cases. DISCUSSION: The difference in the rate of compensation between the various medical fields or types of error depends on specific medico-legal characteristics. The aim of advanced healthcare systems is to prevent medical liability disputes by analyzing this phenomenon and improving clinical risk management programs. In particular, according to our study, events related to organizational deficiencies are the most preventable. In addition, through the use of a dedicated reporting procedure, medico-legal analysis of malpractice cases may be the key to risk reduction. CONCLUSION: Every major hospital should set up a medico-legal watchdog responsible for collecting and analyzing information on professional medical liability disputes in order to prevent and manage such events.

The contribution of legal medicine in clinical risk management.

BACKGROUND: In advanced health services, a main objective is to promote the culture of safety and clinical risk management. In this regard, the reporting of sentinel events fits within a perspective of error analysis, attempting to propose solutions aimed at preventing a new occurrence of the harmful event. The purpose of this study is to analyze the contribution of medico-legal litigation in the management of clinical risk and to propose an organizational model so as to coordinate the intervention of clinical risk management and medico-legal services. METHODS: Retrospective review of 206 cases of medico-legal litigation, settled against a Hospital of a North-eastern city in Italy from January 1, 2014 and December 31, 2015. RESULTS: Approximately 20% of cases, that are classifiable as "sentinel events", were not reported due to various factors. The reason that these events are under-reported is mainly due to the latency between the event itself and its manifestation as a serious damage to health as well as the discomfort in reporting the events of this kind, which is still widespread among healthcare workers. The systematic research of the available documentation for medico-legal purposes permits the acquisition of more information concerning the clinical event, thereby increasing the number and accuracy of the reports to the clinical risk unit. CONCLUSION: The analysis of medico-legal litigation is a valid tool to enhance the reporting of "sentinel events". One possible proposal is the implementation of an organizational model to establish a rapid procedure for the reporting of sentinel events during the evaluation of medico-legal litigations.