Dr. Della Valle and his colleagues worked with two other Midwestern orthopedic groups on the study. The study compared 3,000 patients who underwent either partial or total knee replacements. Those who underwent partial knee replacements were at a lower risk for post-surgical complications, blood clots and re-operations. Patients who had PKR also had shorter hospital stays and were more likely to be discharged home instead of to an intensive care unit than patients who underwent TKR.
In an additional study, Dr. Della Valle and his colleagues tracked their patients for 15 years after partial or total knee replacements to compare the implant durability. He found that failure rate among both procedures was similar and that 90 percent of his partial knee replacements were still intact after 20 years.
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