Knee Surg Sports Traumatol Arthrosc DOI 10.1007/s00167-015-3863-6
KNEE
Femur bowing could be a risk factor for implant flexion in conventional total knee arthroplasty and notching in navigated total knee arthroplasty Jae Han Ko1 · Chang Dong Han1 · Kyoo Ho Shin1 · Levis Nguku2 · Ick Hwan Yang1 · Woo Suk Lee1 · Kwang Il Kim1 · Kwan Kyu Park1
Received: 19 May 2015 / Accepted: 5 November 2015 © European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA) 2015
Abstract Purpose This study aimed to investigate the relationship between preoperative femoral axes and femoral implant position and to determine how femoral sagittal axes, including femoral anterior bowing, influence the femoral component position in total knee arthroplasty (TKA). Methods The relationship between femoral axes (femoral anterior bowing, mechanical axis and the anterior cortical line, intramedullary axis) and implant position was compared in 50 conventional and 50 navigated TKAs. Outliers This study was approved by the institutional review board at the authors’ institute (4-2015-0047). * Kwan Kyu Park [email protected] Jae Han Ko [email protected] Chang Dong Han [email protected] Kyoo Ho Shin [email protected] Levis Nguku [email protected] Ick Hwan Yang [email protected] Woo Suk Lee [email protected] Kwang Il Kim [email protected] 1
2
Department of Orthopedic Surgery, Yonsei University College of Medicine, 50 Yonsei‑ro, Seodaemun‑gu, Seoul 120‑752, Republic of Korea AIC-CURE International Children’s Hospital of Kenya, Kijabe, Kenya
with more than a 3° margin of error in placement of the femoral component compared with the mechanical axis in the sagittal plane were calculated. Results The femoral component flexion angle was 3.1° in the conventional group and 1.6° in the navigation group (p
KNEE
Femur bowing could be a risk factor for implant flexion in conventional total knee arthroplasty and notching in navigated total knee arthroplasty Jae Han Ko1 · Chang Dong Han1 · Kyoo Ho Shin1 · Levis Nguku2 · Ick Hwan Yang1 · Woo Suk Lee1 · Kwang Il Kim1 · Kwan Kyu Park1
Received: 19 May 2015 / Accepted: 5 November 2015 © European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA) 2015
Abstract Purpose This study aimed to investigate the relationship between preoperative femoral axes and femoral implant position and to determine how femoral sagittal axes, including femoral anterior bowing, influence the femoral component position in total knee arthroplasty (TKA). Methods The relationship between femoral axes (femoral anterior bowing, mechanical axis and the anterior cortical line, intramedullary axis) and implant position was compared in 50 conventional and 50 navigated TKAs. Outliers This study was approved by the institutional review board at the authors’ institute (4-2015-0047). * Kwan Kyu Park [email protected] Jae Han Ko [email protected] Chang Dong Han [email protected] Kyoo Ho Shin [email protected] Levis Nguku [email protected] Ick Hwan Yang [email protected] Woo Suk Lee [email protected] Kwang Il Kim [email protected] 1
2
Department of Orthopedic Surgery, Yonsei University College of Medicine, 50 Yonsei‑ro, Seodaemun‑gu, Seoul 120‑752, Republic of Korea AIC-CURE International Children’s Hospital of Kenya, Kijabe, Kenya
with more than a 3° margin of error in placement of the femoral component compared with the mechanical axis in the sagittal plane were calculated. Results The femoral component flexion angle was 3.1° in the conventional group and 1.6° in the navigation group (p
