KEN OKAZAKI    Department   School of Medicine(Tokyo Women's Medical University Hospital), School of Medicine    Position   Professor and Division head
Article types	Original article
Language	English
Peer review	Peer reviewed
Title	Safety of Total Knee Arthroplasty without Using a Tourniquet in Elderly Patients.
Journal	Formal name：Geriatrics (Basel, Switzerland) Abbreviation：Geriatrics (Basel) ISSN code：23083417/23083417
Domestic / Foregin	Foregin
Volume, Issue, Page	6(4),pp.14
Author and coauthor	MIYAMOTO Satoshi, KOSUGI Masahide, SASAKI Shin, OKAZAKI Ken
Authorship	Last author
Publication date	2021/10
Summary	This study retrospectively compared the perioperative bleeding, hemodynamics, and clinical outcomes of total knee arthroplasty (TKA) performed with and without a tourniquet between two age groups. We grouped 103 patients with knee osteoarthritis who underwent primary TKA based on age at surgery: <76 years and ≥76 years. Tourniquet was used for TKA until March 2010 and stopped thereafter; hence, the patients were further classified according to TKA performed with or without a tourniquet. The differences in the operation time; perioperative bleeding; estimated bleeding; and hemoglobin (Hb) and hematocrit (Ht) levels immediately, 1 day, and 7 days postoperatively were evaluated. The clinical outcomes for range of motion, and Knee Society Knee Scores preoperatively and at 4 weeks postoperatively were assessed. Operation time was longer in the ≥76-year-old non-tourniquet group. No difference was observed in estimated bleeding among the groups. Changes in the Hb and Ht levels at postoperative days 1 and 7 were negatively correlated with age but were not different for TKA performed with or without a tourniquet in the ≥76-year-old-patient group. There were no differences in clinical outcomes among the groups. TKA can be performed with or without a tourniquet in patients aged ≥ 76 years with careful assessment of postoperative anemia.
DOI	10.3390/geriatrics6040100
PMID	34698194