Ergonomic insights into bicycle design: the significance of hip and shoulder adduction-abduction angles.

Comfortable Joint Angles (cja), Anthropometrics, Range Of Motion (rom) And Sex Are Crucial For Optimising Bicycle Designs To Enhance Performance And Prevent Injuries. Previous Studies Have Not Comprehensively Provided Related Data, Motivating The Current Study To Address Three Questions: (1) What is the CJA hip and shoulder abduction/adduction (ADD-ABD) for cyclists? (2) How do these measurements vary according to sex and stature? (3) What are the correlations among bicycle variables, anthropometrics, ROM and CJA of the hip and shoulder ADD-ABDs? Data were collected from 12 participants using three bicycles, web cameras and video processing. The analysis showed an average CJA of 26° and 83° for the hip and shoulder ADD-ABDs, respectively.

A Novel Technique for Accuracy in Horizontal, Vertical, and Axial Bracket Placement in Orthodontic Bonding.

Aim: The aim of the study was to develop a method which can help us achieve precise and accurate direct bonding (DB).

Background: Proper and accurate bracket position during orthodontic bonding is one of the main concerns for the clinician. Proper bonding reduces the effort to achieve good finishing by minimizing the wire bending.