Reaffirmed 2020

NATIONAL FOREWORD

This Indian Standard (Part 1) (Second Revision) which is identical with ISO 7207-1 : 2007 ‘Implants for surgery - Components for partial and total knee joint prostheses - Part 1: Classification, definitions and designation of dimensions’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Orthopaedic Instruments Implant and Accessories Sectional Committee and approval of the Medical Equipment and Hospital Planning Division Council.

This Standard was first published in 1987 by adopting ISO 7207-1 : 1985 and subsequently revised in 1997 to incorporate the modifications affected in the second edition of ISO 7207-1 brought out in 1994. This second revision has been taken up to align with the latest ISO 7207-1 brought out in 2007.

Partial and total knee joint prostheses are designed to transmit loads and allow movement under high stress conditions. They are intended to replace anatomical structures and provide structure and function to provide as closely as possible the attributes of the normal natural joint. The structure and functionsrequired in a specific implant depend on the amount of anatomical structure of function which is attenuated or absent, and a system of classification of the attributes of various types of implant is presented.

Many different designs of knee joint prostheses are used all over the world and this standard gives a comprehensive description of the most common knee joint prostheses in accordance with detailed classification system, definition of components and the designation of dimensions. These classificationsassist the surgeon in selection of the appropriate implant for a specific case.

The text of the ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions are however not identical to those used in the Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’.

b) Comma (,) has been used as a decimal marker while in Indian Standards, the current practice is to use a point (.) as the decimal marker.