Abstract :
        The fibulocalcaneus (peroneocalcaneus) Internus (FCI) muscle which is also called as Peroneo calcaneus Internus (PCI) muscle (of MacAlister) is a rare variation of calf muscle with a low prevalence of 
 
		
        
		
				
		
Keyword :
		 Fibulocalcaneus internus (FCI); Peroneo calcaneus internus (PCI), Flexor hallucis longus (FHL), Tarsal tunnel syndrome, Posterior ankle pathology, Flexor digitorum Accessorius longus muscle (FDAL), Anatomical variation, Atypical leg muscle.