OSSIFICATION OF TIBIA AXD FIBULA, 



Fig. 104. 

 C 



113 



Fig. 104. OSSIFICATION OF THE TIBIA. 



A, tibia of a foetus some weeks before birth ; the shaft is ossified ; the ends are 

 cartilaginous. 



B, tibia of a child at birth, showing the commencement of a nucleus in the upper 

 epiphysis. 



C, tibia of the third year, showing the nucleus of the lower epiphysis. 



D, tibia of about eighteen or twenty years, showing the united condition of the lower 

 epiphysis, while the upper remains separate. The upper epiphysis is seen to include the 

 anterior tuberosity. 



E shows an example of a separate centre for the anterior tuberosity. 

 1, shaft; 2, superior epiphysis ; 2', separate centre for the anterior tuberosity; 3, 

 inferior epiphysis. 



Fig. 105. 



Fig. 105. OSSIFICATION OF THE FIBULA. 



A, fibula from a child at birth. The shaft ossified ; the ends cartilaginous. 



B, fibula from a child of two years, showing a nucleus in the lower epiphysis. 



C, the bone of a child of about four years, showing the nucleus of the upper epiphysis ; 

 the lower ought to have been shown as more advanced. 



D, fibula of a person of about twenty years, in which the lower end is complete, but 

 the upper epiphysis is still separate. 



1, shaft; 2, lower epiphysis ; 3, upper epiphysis. 



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