Limited Power of Attorney   Securities Law Compliance


The undersigned, as an officer or director of KYPHON INC. (the "Company"), hereby
constitutes and appoints Robert E. Johnson, David M. Shaw, and Robert A. Koenig as the
undersigned's true and lawful attorney-in-fact and agent to complete and execute such Forms
144, Forms 3, 4 and 5 and other forms as such attorney shall in his discretion determine
to be required or advisable pursuant to Rule 144 promulgated under the Securities Act
of 1933 (as amended), Section 16 of the Securities Exchange Act of 1934 (as amended) and
the rules and regulations promulgated thereunder, or any successor laws and regulations,
as a consequence of the undersigned's ownership, acquisition or disposition of securities
of the Company, and to do all acts necessary in order to file such forms with the Securities
and Exchange Commission, any securities exchange or national association, the Company and
such other person or agency as the attorney shall deem appropriate, including but not limited
to obtaining EDGAR codes.  The undersigned hereby ratifies and confirms all that said attorney
in fact and agent shall do or cause to be done by virtue hereof.

This Limited Power of Attorney is executed at Sunnyvale, California as of the date set
forth below.

/s/ Arthur T. Taylor
Signature
Arthur T. Taylor
Type or Print Name
Dated:  12/07/2006


Witness:

/s/ Dana Rubenstein
Signature
Dana Rubenstein
Type or Print Name
Dated:  12/07/2006