---
kind: "section"
citation: "21 C.F.R. § 888.3350"
title: "21"
number: "888.3350"
heading: "Hip joint metal/polymer semi-constrained cemented prosthesis."
url: "https://uscodex.org/cfr/21/888.3350"
---

# §888.3350. Hip joint metal/polymer semi-constrained cemented prosthesis.

- (a) **Identification.** A hip joint metal/polymer semi-constrained cemented prosthesis is a device intended to be implanted to replace a hip joint. The device limits translation and rotation in one or more planes via the geometry of its articulating surfaces. It has no linkage across-the-joint. This generic type of device includes prostheses that have a femoral component made of alloys, such as cobalt-chromium-molybdenum, and an acetabular resurfacing component made of ultra-high molecular weight polyethylene and is limited to those prostheses intended for use with bone cement ([§ 888.3027](/cfr/21/888.3027.md)).
- (b) **Classification.** Class II.

## Notes

### Authority

Authority: 21 U.S.C. 351, 360, 360c, 360e, 360j, 360 l , 371.

### Source

Source: 52 FR 33702, Sept. 4, 1987, unless otherwise noted.