1.   Brian Tighe discusses polymers in ophthalmology and Peter Marquis describes the application of high performance ceramics in bone and joint replacements.

2.   More sophisticated computer-designed prostheses for joint replacements allow many more patients to benefit.

3.   At regular intervals, patients complete a questionnaire assessing their pain, says Das, who has previously studied other medications to help patients avoid joint replacement surgery.

4.   A similar philosophy has been put to work with joint replacement patients like Brian Snow.

5.   After conventional medicine and acupuncture no longer relieved the excruciating pain caused by his knee arthritis, the Peterborough, N.H. man had joint replacement surgery in July.

6.   He expects to lead his own discussion series, on joint replacement.

7.   He is a prospect for needing a joint replacement at a very young age.

8.   It has developed its own line of knee, hip and shoulder joint replacements and spinal implants.

9.   Joint replacement surgery may be necessary in more serious cases, according to the foundation.