An orthopedic surgical instrument includes from about 40 wt % to about 85 wt % of a base thermoplastic and from about 15 wt % to about 60 wt % of a filler material. The base thermoplastic includes polyetherimide, polycarbonate, modified polyphenylene ether, polyamide, copolymers of these thermoplastics, and combinations thereof. In some aspects all materials in the orthopedic surgical instrument are biocompatible. An orthopedic surgical kit includes an orthopedic surgical instrument and a container suitable for sealing the orthopedic surgical instrument therein. The orthopedic surgical instrument in the kit includes from about 50 wt % to about 90 wt % of a base thermoplastic selected from the group consisting of polyetherimide, polycarbonate, modified polyphenylene ether, polyamide, copolymers of these thermoplastics, and combinations thereof, and from about 10 wt % to about 50 wt % of a filler material.