A Proposal for a New Classification of the Supernumerary Heads of the Biceps Brachii Muscle

Table 4

Difference between presence of the fourth head of the biceps brachii.

Study	Number of cases	Percentage
Kosugi et al. [10]	7	1.3
Rodqigues-Niedenfuhr et al. [31]	5	1.4
Present study – Szewczyk et al.	6	7.5