Instructions: You are given a sentence in Japanese. Your job is to translate the Japanese sentence into Hebrew.
Input: 50歳半ばにして重度の変形性関節症を患いました
Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
עוד כשהוא בשנות ה-50 לחייו, הוא סבל מדלקת מפרקים ניוונית חמורה.