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The Mishna (96b) teaches that if the gid ha-nasheh had not been removed, and an animal’s thigh was cooked together with the sciatic nerve such that there was so much of the nerve as to impart a flavor to the meat of the thigh, it is forbidden. The Mishna continues by asking “How does one measure this?” and explains that we view it as though the meat had been cooked with turnips.
On our daf, Rav Huna explains the meaning of the Mishna. If, when meat and turnips are cooked together in the same proportions as is found in the sciatic nerve and the thigh respectively, the meat imparts its flavor to the turnips, then the thigh would be forbidden on account of the taste of the forbidden nerve. As we have learned (above, daf 97), the Sages estimate that meat cannot impart its taste to any substance that is cooked with it if the latter is sixty times as large in bulk as the meat.