Special Technical ArticlesDoes Patella Resurfacing Affect Postoperative Blood Loss in Patients Undergoing Total Knee Replacement?Girdler, Steven J. MD*; Glezos, Christopher D. MD†Author Information *Albert Einstein College of Medicine †Department of Orthopedic Surgery, Montefiore Medical Center, Bronx, NY The authors declare that they have nothing to disclose. For reprint requests, or additional information and guidance on the techniques described in the article, please contact Steven J. Girdler, MD, at email@example.com or by mail at Albert Einstein College of Medicine, Bronx, NY. You may inquire whether the author(s) will agree to phone conferences and/or visits regarding these techniques. Techniques in Orthopaedics: June 2020 - Volume 35 - Issue 2 - p 134-136 doi: 10.1097/BTO.0000000000000328 Buy Metrics Abstract Patella resurfacing in total knee arthroplasty remains a surgeon-specific decision. Possible benefits of resurfacing include decreased knee pain and rate of reoperation, while complications can occur. No study has assessed postoperative blood loss and transfusion rate as a function of patella resurfacing. Certain patient groups such as elderly patients, Jehovah’s Witnesses, and coagulopathy patients may especially benefit from decreased blood loss during orthopedic surgeries. A retrospective chart review of patients with total knee arthroplasty performed by a single surgeon was conducted. In total, 124 patients were identified that met inclusion criteria with 34 patients in the patella-resurfaced group and 90 patients in the unresurfaced group. Hematocrit level was recorded preoperatively and compared with the hematocrit levels on postoperative days 1 through 3. The primary outcome of average percent drop in hematocrit and SD on postoperative day 1, 2, and 3 was calculated for resurfaced and nonresurfaced groups and data were analyzed for secondary outcomes stratified by sex. After analysis no statistically significant difference in postoperative blood loss between resurfaced and nonresurfaced groups was found. Copyright © 2018 Wolters Kluwer Health, Inc. All rights reserved.