An interesting piece on the occupational perils of the man-at-arms, courtesy of medievalist.net :
'Heads, shoulders, knees and toes: Injury and death in Anglo-Scottish combat, c.1296-c.1403' (https://www.academia.edu/13696699/Heads_shoulders_knees_and_toes_Injury_and_death_in_Anglo-Scottish_combat_c.1296-c.1403)
Oddly, it doesn't mention the one obvious archaeological example (http://www.ancient-origins.net/history/unlocking-identity-stirling-knight-006851), from Stirling castle .
pretty gruesome reading especially on the 'ability' of warriors to fight on even when severely/mortally wounded
Yes, the article balances that "Come here, you coward, and I'll bite your leg off "aspect with the fact that, quite clearly, you could get seriously cut up, quite well.