A protective device for protecting a proximal interphalangeal joint and a distal interphalangeal joint of a human finger, said protective device comprising: - a flexible sheath adapted for wearing around said human finger, wherein said flexible sheath comprises a palmar side for covering a palmar face of said human finger, a dorsal side for covering a dorsal face of said human finger and two lateral sides for covering respectively an ulnar and a radial face of said human finger, and - at least four motion constraining elements, integrated in or secured to said flexible sheath, corresponding to respectively each of both lateral sides of each of said proximal interphalangeal joint and said distal interphalangeal joint of said human finger, wherein each motion constraining element is adapted for constraining, when said flexible sheath is worn around said human finger, a lateral and/or rotational deviation motion of a first phalanx with respect to a second phalanx, said first and second phalanx being articulated with respect to each other by said interphalangeal joint to which said motion constraining element corresponds, wherein each motion constraining element covers a lateral side of the flexible sheath at a location corresponding to said interphalangeal joint, when the flexible sheath is worn around said human finger, wherein each motion constraining element is adapted for resisting elongation of the motion constraining element in a longitudinal direction of the flexible sheath, wherein said at least one motion constraining element is bendable in a dorso-palmar direction to allow flexion of the interphalangeal joint, when said flexible sheath is worn around said human finger, said motion constraining elements corresponding to the distal interphalangeal joint and said motion constraining elements corresponding to the proximal interphalangeal joint are distinct and separate elements having different points of engagement on the flexible sheath, the protective device is characterized in that each motion constraining element comprises at least two elongate elements (11,12) fastened to or integrated in the flexible sheath, wherein the at least two elongate elements (11,12) intersect to form a cross where an axis of rotation of the interphalangeal joint intersects the flexible sheath, when worn on the human finger. - a flexible sheath adapted for wearing around said human finger, wherein said flexible sheath comprises a palmar side for covering a palmar face of said human finger, a dorsal side for covering a dorsal face of said human finger and two lateral sides for covering respectively an ulnar and a radial face of said human finger, and - at least four motion constraining elements, integrated in or secured to said flexible sheath, corresponding to respectively each of both lateral sides of each of said proximal interphalangeal joint and said distal interphalangeal joint of said human finger, wherein each motion constraining element is adapted for constraining, when said flexible sheath is worn around said human finger, a lateral and/or rotational deviation motion of a first phalanx with respect to a second phalanx, said first and second phalanx being articulated with respect to each other by said interphalangeal joint to which said motion constraining element corresponds, wherein each motion constraining element covers a lateral side of the flexible sheath at a location corresponding to said interphalangeal joint, when the flexible sheath is worn around said human finger, wherein each motion constraining element is adapted for resisting elongation of the motion constraining element in a longitudinal direction of the flexible sheath, wherein said at least one motion constraining element is bendable in a dorso-palmar direction to allow flexion of the interphalangeal joint, when said flexible sheath is worn around said human finger, said motion constraining elements corresponding to the distal interphalangeal joint and said motion constraining elements corresponding to the proximal interphalangeal joint are distinct and separate elements having different points of engagement on the flexible sheath, the protective device is characterized in that each motion constraining element comprises at least two elongate elements (11,12) fastened to or integrated in the flexible sheath, wherein the at least two elongate elements (11,12) intersect to form a cross where an axis of rotation of the interphalangeal joint intersects the flexible sheath, when worn on the human finger.