Yu-Chih Lin1, Chih-Hsiang Chang1, Chee-Jen Chang2, Yi-Chun Wang3, Pang-Hsin Hsieh1, Yuhan Chang4. 1. Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, No. 5 Fu-Hsing Street, Kweishan, Taoyuan, Taiwan; Bone and Joint Research Center, Chang Gung Memorial Hospital, No. 5 Fu-Hsing Street, Kweishan, Taoyuan, Taiwan; College of Medicine, Chang Gung University, 259 Wen-Hwa 1st Road, Kweishan, Taoyuan, Taiwan. 2. Graduate Institute of Clinical Medicine, Chang Gung University, Tao-Yuan, Taiwan; Research Services Center for Health Information, Chang Gung University, Tao-Yuan, Taiwan; Clinical Informatics and Medical Statistics Research Center, Chang Gung University, Tao-Yuan, Taiwan; Department of Cardiovascular Medicine, Chang Gung Memorial Hospital, Tao-Yuan, Taiwan; Resource Center for Clinical Research, Chang Gung Memorial Hospital, Tao-Yuan, Taiwan. 3. Research Services Center for Health Information, Chang Gung University, Tao-Yuan, Taiwan. 4. Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, No. 5 Fu-Hsing Street, Kweishan, Taoyuan, Taiwan; Bone and Joint Research Center, Chang Gung Memorial Hospital, No. 5 Fu-Hsing Street, Kweishan, Taoyuan, Taiwan; College of Medicine, Chang Gung University, 259 Wen-Hwa 1st Road, Kweishan, Taoyuan, Taiwan. Electronic address: yhchang@adm.cgmh.org.tw.
Abstract
PURPOSE: To evaluate the incidence, risk factors, mortality, and complications of direct vascular injury (VI) in patients who underwent primary total knee arthroplasty (TKA) using data from a nationwide database. METHODS: Data were collected from the National Health Insurance Research Database of Taiwan. The study group included 111,497 patients who underwent TKA from January 2004 to December 2011. In total, 15 cases of direct VI were reported (VI group). We analyzed the incidence, risk factors, mortality, complications of direct VI and hospital stays between groups (VI group and non-VI group). RESULTS: Average incidence of VI was 13.74 per 100,000 person-years. No patient-dependent risk factors for VI were identified. Surgeons with low surgical volume highly correlated with incidence of VI (P < 0.05). 90-day mortality was significantly higher (33.3% vs. 0.37%) and length of hospital stay was significantly longer (19.43 days vs. 7.26 days) in the VI group than in the control group. In addition, incidence of periprosthetic joint infection, restenosis at the injury site, and limb loss were significantly higher in the VI group than in the control group. CONCLUSION: VI during primary TKA was associated with significantly higher incidence of periprosthetic joint infection, restenosis at the injury site, and limb loss, as well as higher 90-day mortality. Therefore, surgeons should be aware of VI during primary TKA, especially those with low surgical volume.
PURPOSE: To evaluate the incidence, risk factors, mortality, and complications of direct vascular injury (VI) in patients who underwent primary total knee arthroplasty (TKA) using data from a nationwide database. METHODS: Data were collected from the National Health Insurance Research Database of Taiwan. The study group included 111,497 patients who underwent TKA from January 2004 to December 2011. In total, 15 cases of direct VI were reported (VI group). We analyzed the incidence, risk factors, mortality, complications of direct VI and hospital stays between groups (VI group and non-VI group). RESULTS: Average incidence of VI was 13.74 per 100,000 person-years. No patient-dependent risk factors for VI were identified. Surgeons with low surgical volume highly correlated with incidence of VI (P < 0.05). 90-day mortality was significantly higher (33.3% vs. 0.37%) and length of hospital stay was significantly longer (19.43 days vs. 7.26 days) in the VI group than in the control group. In addition, incidence of periprosthetic joint infection, restenosis at the injury site, and limb loss were significantly higher in the VI group than in the control group. CONCLUSION: VI during primary TKA was associated with significantly higher incidence of periprosthetic joint infection, restenosis at the injury site, and limb loss, as well as higher 90-day mortality. Therefore, surgeons should be aware of VI during primary TKA, especially those with low surgical volume.