Date: 26 Tamuz 5579
From: Rabbi Moshe Sofer
To: Unknown recipient
The responsum addresses a difficulty with Rashi's commentary on B'chorot 40a concerning a broken leg that is only noticeable during walking, and the distinction between 'tzole'a' (lame) and 'pise'ach' (limping) in the context of animal blemishes.
Source: Shu"t Chasam Sofer Collected §21