A Cadaveric Study of Different Angles of Scapula and Their Role in its Kinesiometrics and Muscle Morphology

Introduction: The bipedal gait and consequential freedom of the upper limb in human beings has made the movements of the shoulder joint a subject of extensive investigations. The scapular angles provide the base and leverage to various muscles and have been correlated with the different movements of the shoulder joint. Methods: In the present study, different angles of scapula namely superior, inferior, lateral, medial, acromial and coracoid angles were measured in the North Indian population. The study was conducted on 100 scapulas (R:L = 50:50) obtained from Department of Anatomy, Government Medical College, Amritsar. For measuring the angles, centimetre scales and protractor were used. Results: The mean value of superior angle was observed to be 100.830 (R=100.320 : L=101.340) ; inferior angle was 63.620 (R=68.10 : L=59.140) ; lateral angle was 61.720 (R=65.90 : L=57.540) ; medial angle was 147.640 (R=151.320 : L=143.960) ; acromial angle was 106.470 (R=107.680 : L=105.260) and coracoid angle was 83.30 (R=84.240 : L=82.020). Conclusions: It was observed that all angles were higher in the right sided bones except superior angle. Also a wide range was seen in all the angles. _______________________________________________________________________________________ Keywords: acromial; coracoid; inferior; medial; superior. ______________________________________________________________________________________

Human tibial torsion - Morphometric assessment and clinical relevance

Background: Tibial torsion is an important anatomical parameter in clinical practice and displays variability among individuals. These variations are extremely significant in view of alignment guides such as those related to rotational landmarks of tibia in total knee arthroplasty. Further, precise knowledge and information pertaining to angle of tibial torsion also helps in correction of traumatic malunion or congenital maltorsion of tibia. Methods: The present study was carried out to determine the angle of tibial torsion in 100 adult dry tibia bones in the Department of Anatomy, Government Medical College, Amritsar. The study group comprised 50 males and 50 females with equal number of right- and left-sided bones. The measurements were meticulously recorded and the data were subjected to statistical analysis. The results were analyzed and discussed in the light of existing literature. Results: On the right side, it was found to be 29.84° ± 4.86°° (range = 22.00° -38.00°) in males and 28.92° ± 5.10°° (range = 15.00°-38.00°) in females. On the left side, it was found to be 28.00° ± 4.94°° (range = 20.00°-40.00°°) in males and 28.12° ± 4.28°° (range = 20.00°-37.00°°) in females. Conclusion: The present study is an endeavor to provide baseline data with reference to the angle of tibial torsion in the Indian population. The results of the study assume special importance in view of the technical advancements in reconstructive surgical procedures in orthopedic practice