| 摘要 |
A reamer (10) for shaping a bone socket (50), such as an acetabular cavity, comprises cutting means for removing material from the socket during rotation of the cutting head. The cutting means comprises a number of relatively long main cutting edges, each of which extends in a direction from a base to a top of the reamer, and a number, higher than said number of main cutting edges, of relatively short peripheral cutting edges, which are located at the base and distributed at angulary spaced intervals about a rotational axis. During the shaping of the bone socket, a top portion of the reamer (10) is completely received in the bone socket (50) to such an extent, that a cylindrical entrance portion (52) is formed in the socket. The invention also provides a kit including a reamer and a prosthesis. |
