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Aims and Objectives: It is impossible to precisely anticipate the course of the transverse and sigmoid sinuses and theirindividual relationship to superficial landmarks such as the asterion during retrosigmoid approaches. This study was done todetermine the position of the asterion and the relationship between asterion and the transverse-sigmoid sinus junction (TSSJ)in making precise burr hole without damaging sinuses during retrosigmoid craniotomies.Materials and Methods: Computed tomography (CT) angiography was performed in 50 patients to obtain 3D-CT volumerendering images of cranial bone and dural sinuses. After delineating the sinuses, by simple restructuring using software andopacity modulation, bone image is reinforced. Asterion type, distance from the tip of mastoid process to asterion and root ofzygoma (ROZ) to asterion, and location of asterion in relation to TSSJ and distance between asterion and TSSJ were analyzedand measured.Results: The incidence of type 1 (presence of sutural bones) in our study was 24% and type 2 (absence of sutural bones) was76%. There was no statistically significance in the side and gender differences. The distance between the asterion and fromthe ROZ was 54.70 ± 3.68 on the right side and 54.32 ± 3.41 on the left side (P-0.612). The distance between asterion and tipof mastoid was 50.51 ± 2.67 on the right side and 50.12 ± 3.06 on the left side (P-0.716). The asterion was located on the T-Ssinus complex in 36 (72%) cases. The asterion was below the T-S sinus complex in 13 (26%) cases, and above the T-S sinuscomplex in only 1 (2%) cases.Conclusion: 3D-CT volume rendering imaging is capable of accurately visualizing the bony landmark and dural sinuses. Aneasy and simple restructured image provides precision and safety for the patient by ready and easy localization of asterionand TSSJ. This study was done to show that the previous cadaver-based anatomical studies can be done now in a moresophisticated and accurate manner with the latest technological advancements. This offers new options for anatomic researchand morphometric investigations.
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Introduction: The surgeries over the proximal end of femur is common procedure in orthopaedics. Knowledge ofproximal femur’s morphometry can be helpful in reducing the risk of complications linked to surgeries done inthis region due to vascular, metabolic or traumatic causes. The present study is therefore conducted to providedata on the morphometric values of proximal femur and to customize the implant design to suit the Telanganapopulation and thereby reducing the complications.Objectives: 1.To study the various measurements of proximal end of femur 2. To compare the results withprevious studies.Materials and Methods: A total of 180 dry femur have been collected from Department of Anatomy, MamataMedical College. With the aid of the vernier calliper, goniometer and osteometric board, measurements such asfemoral length, transverse diameter of the head, anterior neck length and angle of the neck shaft were measured.Results: The average length of the left femur was 43.33 ± 2.72 cm and 42.95 ± 3.29 cm of the right femur. Theanterior neck length of the right femur was 2.69 ± 0.41 cm, and left femur was 2.61 ±0.34 cm. The neck shaft angleof left femur was 120.3° ± 5.26 and right femur was 119.92° ± 6.27.Conclusion: Relative to other populations, this study showed the measurements of proximal femur in Telanganapopulation were different. The results of this study can be significant in anthropological and medico-legalpractice as well as for the diagnosis and treatment planning of radiologists and orthopaedic surgeons.
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Objectives: The dual-arch impression technique is convenient in that it makes the required maxillary and mandibular impressions, as well as the inter-occlusal record in one procedure. The accuracy of inter-abutment distance in dies fabricated from dual-arch impression technique remains in question because there is little information available in the literature. Materials and Methods: This study was conducted to evaluate the accuracy of inter-abutment distance in dies obtained from full arch dual-arch trays with those obtained from full arch stock metal trays. Results and Conclusion: The metal dual-arch trays showed better accuracy followed by the plastic dual-arch and stock dentulous trays, respectively, though statistically insignificant. The pouring sequence did not have any effect on the inter-abutment distance statistically, though pouring the non-working side of the dual-arch impression first showed better accuracy.