Area of Knife: 7.4322432 - 14.8644864 cm^2
A finger is 18 to 25 mm thick - 1.8 to 2.5 cm | 14.68% is bone = 0.26424 to 0.367 cm | Skin; 1.53576 to 2.133 cm
Skin
7.4322432 - 14.8644864 * 1.53576 to 2.133 = 11.4141418 to 31.7059495 cc
Frag (4.4 J/cc); 50.2222239 to 139.506178 J - Below Average Human+ to Athletic Human (10-C+ to 10-A)
Bone
7.4322432 - 14.8644864 * 0.26424 to 0.367 = 1.96389594 to 5.45526651 cc
Frag (51.6 J/cc); 101.337031 to 281.491752 J - Average Human+ to Athletic Human+ (10-B+ to 10-A+)
Total
Frag: 50.2222239 to 139.506178 + 101.337031 to 281.491752 = 151.56 to 421 J - Athletic Human to Street Level (10-A to 9-C)