The nail inside this marrow as for (1), being something which is directed to the especially bone, the distal (2036) edge in order to insert in the marrow cavity (2), the proximal edge (3), over the medial axis (4), and total length L it has the form of the cylinder shape as a whole. The nail (1) the separate lock section of 3 types (5,6,7) has in order to receive the lock screw, respectively, 1 these perforation holes (8) with at least, the lock section of the aforementioned 3 kinds (5,6,7), is separated mutually the respective each lock section (5,6,7) two separate intermediate sections whose the perforation hole per unit length (8) numbers are fewer (9,10) by.< Selective figure >Figure 1本骨髄内ネイル(1)は、特に頚骨に向けられたもので、骨髄腔に挿入するための遠位端(2)、近位端(3)、中心軸(4)、および、全長Lに渡って全体として棒状の形態を持つ。ネイル(1)は、ロックネジを受容するための、それぞれ、少なくとも1本の貫通孔(8)を持ち、3種類の別々のロック部(5,6,7)を有し、前記3種のロック部(5,6,7)は、それぞれ各ロック部(5,6,7)よりも単位長当たりの貫通孔(8)の数が少ない二つの別々の中間部(9,10)によって互いに隔てられる。【選択図】図1
