|Year : 2022 | Volume
| Issue : 1 | Page : 26-31
Analysis of ligature marks in hanging: A retrospective study of autopsies in the mortuary of a tertiary health-care center in North East India from 2011 to 2019
Salam Bitam Singh, Seram Elizabeth Devi, Memchoubi Phanjoubam, Th Meera Devi
Department of Forensic Medicine and Toxicology, Regional Institute of Medical Sciences, Imphal, Manipur, India
|Date of Submission||09-Dec-2021|
|Date of Decision||12-Dec-2021|
|Date of Acceptance||22-Dec-2021|
|Date of Web Publication||02-Sep-2022|
Dr. Memchoubi Phanjoubam
Department of Forensic Medicine and Toxicology, Regional Institute of Medical Sciences, Imphal, Manipur
Source of Support: None, Conflict of Interest: None
Background: Many times, a ligature mark may be the only evidence available in cases of asphyxial deaths due either to hanging or strangulation. A thorough examination of the ligature mark and analysis of the information provided by it is, therefore, a must to confirm the death as due to hanging.
Materials and Methods: A retrospective study was conducted at the Department of Forensic Medicine and Toxicology, Regional Institute of Medical Sciences, Imphal, between 2011 and 2019 to assess the information provided by a ligature mark in such cases.
Results: We found that deaths due to hanging constituted 7.1% of the total unnatural deaths subjected to medicolegal autopsy. Rope (34.93%) was the most common ligature material used. Majority of the victims preferred slip knots (53.61%), followed by fixed knots (46.38%). In most of the cases, the mark was obliquely placed (83.73%) and above the larynx (77.1%). Imprint over the groove when present corresponded with the ligature material used in all the cases.
Conclusion: It was concluded that a thorough, scientific examination of the ligature mark, though not conclusive, is the most important part of the postmortem examination of deaths due to hanging.
Keywords: Hanging, ligature mark, rope
|How to cite this article:|
Singh SB, Devi SE, Phanjoubam M, Devi TM. Analysis of ligature marks in hanging: A retrospective study of autopsies in the mortuary of a tertiary health-care center in North East India from 2011 to 2019. J Med Soc 2022;36:26-31
|How to cite this URL:|
Singh SB, Devi SE, Phanjoubam M, Devi TM. Analysis of ligature marks in hanging: A retrospective study of autopsies in the mortuary of a tertiary health-care center in North East India from 2011 to 2019. J Med Soc [serial online] 2022 [cited 2022 Sep 27];36:26-31. Available from: https://www.jmedsoc.org/text.asp?2022/36/1/26/355577
| Introduction|| |
Hanging is one of the most common methods of suicidal deaths in India. Virtually all hangings are suicides until proven otherwise. It is a form of mechanical asphyxia which is caused by suspension of the body by a ligature which circles the neck, the constricting force being the weight of the body. The ligature material can be any household substance. A single knot with a running noose, fixed knot by a granny, reef knot, or a simple loop is found in cases of hanging. The nature of ligature mark depends upon the material and position of ligature used and the time of suspension of body after death. If the ligature material is soft and is removed immediately after death, the mark might be absent in such cases. Thick and long beard or clothes on neck may lead to formation of a dull and ill-formed ligature mark.
Thus, the ligature mark becomes a crucial aid in diagnosis and evaluation of the case. Hence, examination of ligature material and mark becomes an indispensable part of autopsy.
| Materials and Methods|| |
The present study was carried out in the Department of Forensic Medicine and Toxicology, Regional Institute of Medical Sciences, Imphal, between 2011 and 2019. A total of 166 cases of asphyxial deaths due to hanging were studied from the autopsy reports. A thorough analysis of each case was done with regard to age, sex of individual, ligature mark, ligature material, impression, pattern, color (to evaluate time since death), course, type of knot, level of ligature, skin changes, etc. A note was also made regarding other external injuries if any.
| Results|| |
The total number of autopsies conducted in the mortuary at the Department of Forensic Medicine and Toxicology, Regional Institute of Medical Sciences, Imphal, between 2011 and 2019 was 2311.
Among the above, 166 (7.1%) cases were due to hanging. All the cases were examined with emphasis on ligature marks. The year-wise percentage of hanging cases was estimated and it was highest in 2017 (13.85%) and least in 2011 (6.62%). The average number of cases per year was 18.4. In the present study, 88 (53.01%) male victims and 78 (46.98%) female victims were found [Figure 1].
Majority of the cases were Meiteis (76%), followed by Tribals (10%) and Nepalese (5%) [Figure 2].
Majority of cases observed were young adults in the third decade, i.e., 21–30 years with 53 (31.9%), followed by individuals in second decade, i.e., 11–20 years – 38 (22.89%) [Table 1].
Most of the cases were unmarried, i.e., 91 (54.81%) and 72 (43.37%) were married. In 3 (1.8%), the marital status was not known [Figure 3].
Most of the cases happened in the morning (44%), followed by evening (29%), night (195), and afternoon (8%) [Figure 4].
The ligature material was found in all the cases examined. Rope was the most common ligature material used by victims in the present study – 58 (34.93%), followed by dupatta (scarf) in 51 (30.72%) and other materials such as khudei (traditional loincloth) and phanek (traditional wraparound) were also used [Figure 5].
Ligature mark was present in all the cases. A single ligature mark was found in 131 (78.91%) and multiple turns in 35 (21.08%) cases [Figure 6].
Regarding the position of the knot, 6 cases (3.61%) were of typical hanging type and 160 (96.38%) cases were of atypical hanging type where the knot was situated on other parts of the neck and not in the occipital region [Figure 7].
In the present study, two types of knots were found. Slip knot was found in 89 (53.61%) and fixed knot in 77 (46.38%) cases [Table 2].
The mark was obliquely placed on the neck in 162 (97.59%) cases and transversely placed in 4 (2.4%) cases [Figure 8].
The ligature mark was situated above thyroid cartilage in 128 (77.1%) cases, at the level of thyroid cartilage in 38 (22.89%) cases, and below thyroid cartilage in 10 (6.02%) cases [Figure 9].
Regarding the direction of ligature mark, the mark was obliquely going upwards from right to left and in 88 cases (53.01%), oblique from left to right in 51 cases (30.72%), and transversely placed in 3 cases [Figure 10].
Hyoid bone was fractured in 4 cases only (2.40%) [Figure 11].
The intima of the internal carotid artery was intact in 159 (95.7%) cases and had transverse tears in 8 cases (4.81%) [Figure 12].
In the present study, it was observed that in 26 (15.6%) cases, there was extravasation on the neck tissue, there was no extravasation in 65 (39.15%), and in 75 cases (45.18%), the subcutaneous tissues were pale and glistening under the ligature mark [Table 3].
| Discussion|| |
The ligature mark in hanging needs detailed and extensive examination. The nature and texture of ligature material and type of hanging (complete/partial) also play a vital role in correlating the findings in respective cases. In majority of cases, partial examination or missing of some trivial but important findings leads to derivation of wrong and inconclusive evidences which in turn leads to confusion.
In the present study, 7.1% of cases of hanging were recorded in a period of 9 years (January 2011 to December 2019). Cases were higher in the later part of the study period. The above statement clearly depicts that the number of cases of hanging is increasing, and there is a definite need for formulation of necessary steps to control this social evil.
Young adults in the third decade accounted for maximum number of cases – 31.9%, followed by the second decade – 22.89%. Similar findings were observed by various research workers and authors.,,,,
Majority of cases were males – 53.01% and 46.98% of cases were females. The present findings are consistent with studies done by other authors.,,,,,
The incidence of hanging was found to be more common in unmarried individuals (54.81%) and less in married individuals (43.37%). This finding is different from studies done in other places. The possible element of stress and lack of direction and purpose in life can be some reasons regarding increase in the cases of unmarried people.
The authors tried to study in detail regarding ligature material used, and a comparative study was performed in order to assess the common material used during hanging by the victims in the Indian subcontinent. In all the studies done by various researchers, cloth material – chunni –was found to be the most common ligature material, followed by nylon rope and saree., The comparative results are tabulated in [Figure 3]. The rope was the most common ligature material used by victims in the present study – 58 (34.93%), followed closely by dupatta in 51 (30.72%) and other materials such as khudei and phanek were also used. Thus, it depicts that in majority of cases, the decision of committing suicide by hanging is an unplanned one under extreme psychological disturbances. In particular period of time, whatever material was available it has been used by the victims.
Numerous facts can be established by examining ligature material. It produces a particular pattern over the skin and the characteristics of the mark broadly depend on material used. The pattern of ligature marks was observed only in cases where rope (34.93%) and belt (4.21%) were used, whereas other studies observed patterns in only 10%.
Single ligature marks were most commonly found (78.91%). Identical results were recorded by Sadikhusen et al.
In majority of cases, slip knot (71.08%) was used, which is a contradictory finding compared to the findings of Sadikhusen et al. where the fixed knot was observed in a maximum number of cases –58%. Thus, the fact is once again strengthened, that in majority of individuals, suicide by hanging is being practiced under extreme psychological stress where individual resorts to an easy knot.
In the present study, maximum number of cases (77.1%) showed ligature marks above thyroid cartilage which was also observed by others., In hanging, the ligature mark was normally situated higher in the neck above laryngeal prominence. The position of the mark in hanging depends on the way – the device was fixed and the suspension point. According to Reddy KSN, the mark of hanging is situated above the level of thyroid cartilage in between larynx and chin in 80%, at the level of thyroid cartilage in 15%, and below the level of thyroid cartilage in about 5% cases, that too in case of partial hanging. All the above facts are correlating with the observations in the present study.
In the present study, the incidence of fracture of hyoid bone was observed in 2.40%. In other studies also, the percentage of cases showing hyoid bone fracture was very less.
In the present study, there were no external injuries other than ligature marks. Similar observations were evident in studies done by Saisudheer and Nagaraja.
Internal examination beneath the ligature mark revealed that in 26 (15.6%) cases, there was extravasation on the neck tissue, there was no extravasation in 65 (39.15%), and in 75 cases, (45.18%), the subcutaneous tissues were pale and glistening under the ligature mark. It is said that the ligature mark is mainly a postmortem phenomenon, any inner neck structure injury indicating ligature mark intravitality is to be identified to establish the antemortem hanging.
All the observations were linked with respective subsequent findings such as absence or presence of other external or internal injuries to obtain an acceptable outcome regarding the mode and manner of death in the victim.
| Conclusion|| |
The present study tries to emphasize that the ligature mark needs to be evaluated along with other external features and internal findings. Thus, if this procedure of linking all the findings is followed as a routine practice in cases of death due to hanging, the formulation of final opinion in doubtful cases will become easy. This, in turn, helps to distinguish ante mortem ligature mark with postmortem ligature mark and in establishing the cause and manner of death.
Financial support and sponsorship
Conflicts of interest
There are no conflicts of interest.
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[Figure 1], [Figure 2], [Figure 3], [Figure 4], [Figure 5], [Figure 6], [Figure 7], [Figure 8], [Figure 9], [Figure 10], [Figure 11], [Figure 12]
[Table 1], [Table 2], [Table 3]