Abstract: A retractor for surgery according to various implementations comprises a handle, an operating portion, and a curved body. In a side view, the handle, the curved body, and the operating portion each define a mean line, wherein: the mean line of the curved body extends along an arc, the mean line of the handle is tangent to the arc, the mean line of the operating portion defines a concavity opposed to the concavity of the arc; the operating portion comprises a retraction segment and one rest segment comprising a tip; and the extension of the circular arc intersects the rest segment. In a front view, the curved body defines an opening comprising a proximal portion having width l and a distal portion having width L, wherein l<L.

Abstract: Joint prosthesis (100) with removal device comprising a first portion (10) suitable to be implanted in a bone structure and suitable to couple with a second portion (50), characterised in that said second portion (50) houses within it a removal element (70) suitable to interact with at least one of said first and second portions (10, 50) and in that said removal element (70), is configured to be operated in translation with respect to the second portion (50), and to generate a detachment force such as to uncouple the first portion (10) from the second portion (50) of the joint prosthesis (100).

Abstract: Joint prosthesis (100) with removal device comprising a first portion (10) suitable to be implanted in a bone structure and suitable to couple with a second portion (50), characterised in that said second portion (50) houses within it a removal element (70) suitable to interact with at least one of said first and second portions (10, 50) and in that said removal element (70), is configured to be operated in translation with respect to the second portion (50), and to generate a detachment force such as to uncouple the first portion (10) from the second portion (50) of the joint prosthesis (100).