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What is All of following are examples of traction epiphysis except:- and explain in detail?
Epiphysis is the pa of bone which ossifies from the secondary centre. It may be of three basic types; 1) Pressure epiphysis:- it transmits the body weight and protects the epiphyseal cailage. E.g. heads of femur and humerus, condyles of femur and tibia. 2) Traction epiphysis:- it is produced by the pull of some muscles. E.g. trochanters of femur and tubercles of humerus. 3) Atavistic epiphysis:- it is phylogenitically an independent bone and is attached secondarily on a host bone to receive nutrition. E.g. coracoids process of scapula and posterior tubercle of talus or os trigonum.