A bone screw assembly is provided. A bone screw assembly includes a first body, a second body, and a screw locking assembly capable of coupling the first body to the second body. The first body is capable of engaging the proximal portion, the distal portion capable of penetrating the bone in response to rotation about the longitudinal axis of the first body, and the first portion capable of engaging the bone. And a thread segment. The second body defines a through hole that can receive the distal portion of the first body. The screw locking assembly includes a first screw locking section associated with the proximal portion of the first body and a second screw locking section associated with the through hole of the second body. Either the first screw locking section or the second screw locking section deforms the other in response to rotation of the first screw locking section with respect to the second screw locking section. [Selection diagram] Figure 1【課題】骨ねじアセンブリを提供すること。【解決手段】骨ねじアセンブリは、第１の本体と、第２の本体と、第１の本体を第２の本体に結合することができるねじ係止アセンブリと、を含む。第１の本体は、近位部分と、第１の本体の縦軸を中心とした回転に応答して骨を貫通することができる遠位部分と、骨と係合することができる第１のねじ区分と、を含む。第２の本体は、第１の本体の遠位部分を受け入れることができる貫通穴を画定する。ねじ係止アセンブリは、第１の本体の近位部分に関連付けられた第１のねじ係止区分と、第２の本体の貫通穴に関連付けられた第２のねじ係止区分と、を含む。第１のねじ係止区分又は第２のねじ係止区分のいずれかが、第２のねじ係止区分に対する第１のねじ係止区分の回転に応答して他方を変形させる。【選択図】図１
