Indian Hand Anthropometry: First Web Space Angle Measurement in A Population of 800 Subjects.

The first web space of the hand plays a crucial role in determining the hand's span. Our study aims to examine and quantify the first web space angle in both hands of adult individuals within the Indian population with no upper limb pathologies. The primary objective of this study is to establish normative data. These data will be useful in surgical correction for the first web release, recommending corrective splints, and calculating the percentage of disability in hand function.  Data from 800 individuals from various regions across India, ranging in age from 20 to 50 years who had no pathology in both upper limbs were collected. A goniometer was used to measure the first web space angle of both hands by keeping the forearm pronated, elbow flexed, and arms adducted. The subjects from different states were divided into various zones.  In 800 subjects, the average measurement in the right hand was 97.28 degrees, and in the left hand, 99.76 degrees. In males, the average measurement in the right hand was 97.54 degrees, and in the left hand, it was 99.61 degrees. In females, in the right hand, it was 96.93 degrees, and in the left hand 100 degrees. The result was recorded in subjects from each zone in the country.  The large sample size from various parts of the country makes the study more reliable. The technique of measuring the angles was easily reproducible. Our findings provide crucial normative data for clinicians and therapists.