The biometric parameters of the hand surface at young adults

We tried to reveal the morphometry of the hand with superficial parameters by considering it's kinesiology, anatomy and functions. We cannot think superficial anatomy apart from deep structures. When we evaluate together, we use this information in many areas, from prosthetic and robot hand design to 3D modelling, from ergonomic to glove design. Today for special design, the product to be obtained with each person's own parameters will be closer to reality. Hand kinesiology; In the study, 51 young adults (32 female and 19 male) between the ages of 18-30 were used. Photographs were taken by giving different positions to the participants' hands. The interpretation of the statistical data was done on the SPSS program by carrying out the measurements in image J program. According to the results of the measured parameters; the average of finger lengths in hand are; 49,51 + 5,53 mm for thumb finger, 63,89 + 4,1 mm for index finger, 70,70 + 5,25 mm for middle finger, 65,53 + 4,8 mm ring finger and 53,35 + 4,32 mm for fingernail finger. Length difference between fingers when the hand is in extender and maximum adduction positions are 56,14 + 6,16 mm for between the thumb and the index finger, 10,70 + 4,09 mm for between the index finger and the middle finger, 10,85 + 1,42 mm for between the middle finger and the ring finger and 25,63 + 2,74 mm for between the ring finger and the little finger. Other results found like this; Average of radial natural angle: 56,39 + 10,5o, average of ulnar natural angle: 23,42 + 7,1o. Average of radial deviation angle: 65,19 + 8,2o, average of ulnar deviation angle: 51,21 + 9,6o. The average of the angle defined as grasping / gripping angle was measured as 49,13 + 5,76o. Averages of the angles between the fingers when they are positioned to the maximum abduction are 53,37 + 6,54o between the thumb and the index finger, 17,18 + 2,59o for between the index finger and the middle finger, 14,27 + 2,32o for between the middle finger and the ring finger and 32,12 + 6,98o for between the ring finger and the little finger. It is also found that; except for the head finger, the longitudinal axes of the fingers are towards the scaphoideum when the metacarpophalangeal diarthroses are in the maximal fleksiyon and the average angles between these axis are equal. It was confirmed that various features of participants such as marital status, age, height, place of birth, dominant hand preference, dominant hand preference when writing, social activity attendance status and past upper extremity accident status affected the averages of the parameters and the metric results. Pearson Correlation Analysis was performed to determine the relationship between the results of the personal information in the survey and the parameters. The value of < 0.05 was accepted as statistically significant difference in the study. Keywords: Hand anatomy; Hand biomechanics; Hand modelling; Human hand biometry