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Goyal N.,Christian Medical College | Gupta M.,Swami Devi Dayal Dental College and Hospital | Aggarwal B.,National Dental College
Journal of Clinical and Diagnostic Research | Year: 2012

Background: The squamous part of the occipital bone has an upper membranous part which is called as the interparietal part and a lower cartilage part which is called as the suboccipital part. There is a controversy regarding the ossification of these two parts. Aim: In this study, the incidence of the interparietal bone has been estimated and compared with the previous observations. Materials: A total of 150 adult dried skulls were examined to determine the incidence of the interparietal bone. Results: The skulls which were observed, displayed many variations in the occipital region. In 11 cases, single or multiple separated bones were observed. In 6 (4%) cases, the lower edge of these additional bones was situated slightly above the external occipital protuberance and such bones could be classified as interparietal bones. In 5 (3.3%) cases, the lower edge of these additional bones was much higher (higher than the midline, between the lambda region and the highest nuchal line). These bones were much smaller in size. The latter can be classified as either pre-interparietal or sutural bones or as non-fused parts of the interparietal bone. Further studies are required to clarify the origin of these bones.

Goyal N.,Christian Medical College | Gupta M.,Swami Devi Dayal Dental College and Hospital | Joshi K.,Jawaharlal Institute of Postgraduate Medical Education & Research
Kathmandu University Medical Journal | Year: 2013

Background: Osteoarthritis (OA) is a common problem in elderly, but it is not an inevitable feature of ageing. About 80-90% of individuals of both sexes have radiographic evidence of OA by the time they reach an age of 65. But not all of them have the symptoms like pain and decreased joint motion. Objective: The objective of the present study was conducted to find out whether the osteoarthritic changes in human articular cartilage are similar to the ageing process or not. Methods: Femoral articular cartilage specimens obtained from 13 osteoarthritic patients (52-80years) undergoing total knee replacement and 9 cadavers of same age group (50-80years) (control) were processed and studied under electron microscope. The ultrastructure of the cartilage from the two groups was compared with each other. Results: Under the electron microscope, articular cartilage from control group had chondrocytes having a secretary cell characteristic with prominent nucleus and well developed organelles. In osteoarthritic cartilage, degenerating or necrotic chondrocytes were found. Nuclei of these chondrocytes appeared lobulated or indented. Chondrocytes below the fibrillated surface had dilated and irregular endoplasmic reticulum. Electron dense lipid deposits in the extracelluar matrix as well as intracytoplasmic glycogen deposits were much increased in osteoarthritic cartilage as compared to the control group. Amount of perinuclear intracytoplasmic fine filaments was also increased in the chondrocytes of osteoarthritic cartilage. Conclusion: Ultrastructural findings of the osteoarthritic articular cartilage were much different from the ageing non-osteoarthritic cartilage. Hence, OA should be considered a specific process and not simply an inevitable feature of ageing.

Jatti D.,Swami Devi Dayal dental College and Hospital | Rastogi P.,Sharda University
Journal of Indian Academy of Forensic Medicine | Year: 2015

Personal identification plays a pivotal role in identifying unknown persons both dead and alive. Cheiloscopy deals with examination of system of furrows on the red part of human lips. The present study was undertaken to classify lip prints, study their variations, determine the most common pattern in the study population, and evaluate differences in lip prints between males and females.Lip prints of 150 individuals, were obtained using lipstick and adhesive tape. The lip prints were scanned and analysed using Adobe® Photoshop® software 7and classified according to Tsuchihashi classification.All the lip prints showed different patterns. Patterns of lip prints occurred in various combinations. The patterns were similar between males and females. Type II was the most common followed by Type I.Although Lip prints have been found frequently at crime scenes its use is still in the budding stage. It is suggested to institute a record of lip prints for all individuals in a certain locality, hoping to be a reference in civil litigations and criminal cases.

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