Scottsdale/Phoenix Arizona
How Long Do Saline Implants Last?
Results of a Multi Center Study
Scott Spear, MD, presented some interim results of a"Prospective Multi-Center Trial of Saline and Silicone Filled BreastImplants" at the Annual Meeting of the American Society for AestheticPlastic Surgery in Los Angeles in May 1998. This study included 56sites for saline implants, and is planned to run for ten years. Dr.Spear presented four year results.
These results are per patient (not per implant) and arepresented with the 95% Confidence Interval (meaning that, like allstudies, the numbers presented are estimates, and there is a 95%chance that the actual value is within the range presented)
| 4 Year Risk Rates, Saline Implants for Augmentation, Per Patient | ||
|---|---|---|
| 4 Year Risk | 95% Confidence Interval | |
| Infection | 1% | 0%-2% |
| Capsular Contracture | 7.8% | 5.2%-10.4% |
| Deflation | 8.9% | 5.9%-11.9% |
| Explantation | 14.1% | 10.6%-17.6% |
Capsular Contracture means tightening of the scar around the implant,causing the implant to feel hard. This probably occurs in all implantsto some degree. Dr. Spear did not say how Capsular Conrtracture wasdefined in this study. Explantation refers to removal of one of theoriginal implants for any cause (including, for example deflation),regardless of whether the implant was replaced.
Importantly, the early deflation rate is higher than many of ushave thought; 8.9% per patient over 8 implant-years (two implants perpatient) is about 1% risk of deflation per implant-year, at least overthe first four years. My personal belief is that all saline implants willeventually deflate if left in place long enough, and that is what I telleach of my patients. When an implant deflates, it should be replacedwithin two weeks, in order to prevent shrinkage of the capsule thatdevelops around any implant. The initial operation should incorporateplanning for eventual implant replacement. Replacement is quitestraightforward when the incision under the breast is used, and thatis one reason that I prefer that incision. Replacement through theincision in the underarm (axilla) will be more difficult, and may beimpossible if modification of the implant capsule is necessary.
More information fromthis study.
This information is provided for general information only. Please consult with your local Plastic Surgeon for specific information about your own situation. I recommend that you see a Plastic Surgeon certified by the American Board of Plastic Surgery. In the United States and Canada, call 800/635-0635 or 888/4PLASTIC for the names of board-certified Plastic Surgeons in your area.