When I was a faculty member at the Toyohashi University of Technology, I played a second match after playing my first match and then judging the next match at a tennis workplace match on a November weekend when it was getting quite cold, but I tore the Achilles tendon in my left foot, perhaps because my body was cold and my preparation was insufficient, or perhaps because the load on my foot was too great from past years of intense exercise. Perhaps it was because I was cold and did not do enough preparation, or perhaps it was the heavy load on my leg from years of strenuous exercise, but I ruptured the Achilles tendon in my left foot. Fortunately, one of my tennis friends was a registered nurse, so she immediately called an ambulance and I was rushed to Toyohashi Municipal Hospital, which had good surgeons at the time, and was immediately hospitalized. A few days later, I was hospitalized after having the first surgical operation in my life. Despite having a normal appetite, the hospital food was so bad that I got tired of it after a few days. I satisfied my appetite by having my wife eat instead and eating lunch boxes that she bought for me. In addition, although Toyohashi Municipal Hospital was newly reconstructed after that, I was discharged from the hospital after a week of stay and decided to recover at home because his hospital room at that time was shared with a paralyzed in-patient who was paralyzed in a car and a motorcycle accident. Naturally, I could not walk around freely for about five weeks, and it was inconvenient to use crutches for everything I did. So I asked my wife to drive me to and from classes, and I spent most of my time at home except for going to my classes.

豊橋技術科学大学で教員をしていた頃、かなり寒くなってきた11月週末のテニス職場対応戦で、1回目の試合をした後、次の試合のジャッジをした後、2回目の試合をしたが、身体が冷えていたのに準備運動が不十分だったのが原因か、あるいは長年の激しい運動で足への負荷が大きかったせいか、左足のアキレス腱を断裂してしまった。幸いにテニス仲間に正看護士がいたので、すぐに救急車を呼んでくれ、当時としては良い外科医がいた豊橋市民病院に運ばれ、即入院した。数日後、人生初めての外科手術をしてもらい、入院していたが、食欲は普通にあるにもかかわらず、あまりに病院食がまずく、数日で飽きてしまった。代わりに妻に食べてもらい、買ってきてもらった弁当を食べたりして食欲を満足させたりもした。またの後の後市民病院市民病院は新しく立て直されたが、当時の古い病室はオートバイ運転での交通事故で半身不随の入院患者と一緒の共用部屋であったため、1週間で退院し自宅で回復に努めることにした。当然、自由に歩き回るのができない5週間あまり、何をするにも松葉杖が必要で不便ではあったが、車での送迎を妻に頼み、担当授業に行く以外、自宅でほとんど過ごし、妻には大変迷惑をかけたと今さながら思う。