This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Joints, Subject name: Anatomy
Which of the following is an example of atavistic epiphysis? 
Select and explain. 
A. Greater trochanter, B. Head of femur, C. Upper end of radius, D. Coracoid process of scapula
D: Coracoid process of scapula
Answer: D: Coracoid process of scapula 
Explanation: Ans. is 'd' i.e., Coracoid process of scapula YPES OF EPIPHYSES: Pressure epiphysis o Articular and takes part in weight transmission o Examples: Head of femur Condyles of tibia Lower end of radius Traction epiphysis o Non articular and does not take part in weight transmission o Provide attachment to a tendon which exerts traction o Examples: Trochanter of femur Tubercles of humerus Mastoid process Atavistic epiphysis o Phylogeneticallv an independent bone, which in man becomes fused to another bone o Examples:Coracoid process of the scapula Posterior tubercle of talus Os trigonum Aberrant epiphysis Not always present Examples: Head of 1 st metacarpal Base of other metacarpals