Chullin 77a

Rav asked a scientific question of doctors:

חולין עז. (ש"ס ווילנא); ז"ל

אמר רב אשי כי הוינן בי רב פפי איבעיא לן נקדר כמין טבעת מהו ופשטנא מהא דאמר רב יהודה אמר רב דבר זה שאלתי לחכמים ולרופאים ואמרו מסרטו בעצם ומעלה ארוכה אבל פרזלא מזרף זריף אמר רב פפא והוא דקנה גרמא דידיה:  עכ"ל

R. Ashi said, When we were at the school of R. Papi he enquired of us, What is the law if some of the flesh around the fracture was cut away in a circle like a ring?  And I suggested an answer from the following statement of Rab Judah in the name of Rab, 'I enquired about this of scholars and doctors and they said, One should make incisions around the edges of the flesh with a bone and it will then heal up, but [not with] an iron instrument [for it] would case [sic] inflammation'.  R. Papa said, Provided the bone was firmly attached to it.  [translation by Eli Cashdan in The Babylonian Talmud, Rabbi Dr. I. Epstein, ed., Seder Kodashim Vol. III (Hullin I), London: Soncino, 1948]

(Reference from Levi, Facing Current Challenges, Chap. 33, fn. 24)