[1] He was chief of surgery at the Hôpital de la Charité in Paris.

In 1843 he defended his doctorate with a thesis titled "Études sur les fibro-cartilages inter-articulaires".

During the following year he attained his aggregation in surgery with the thesis "De l’étranglement dans les hernies".

During his career, Gosselin excelled in the fields of orthopedics, anatomy, physiology and urology.

He is remembered for his research on diseases of the testicles, spermatic cord and scrotum, and their effect on fertility and virility.