Optimal Sagittal Insertion Depth and Direction of Femoral Intramedullary Rod in Total Knee Arthroplasty in Chinese Osteoarthritis Patients.

Orthopaedic Surgery
Yong-Liang OuHong Xia

Abstract

To identify the optimal femoral intramedullary rod insertion depth and direction on the sagittal plane in total knee arthroplasty (TKA) of Chinese osteoarthritis (OA) patients. From January to December 2019, CT data were collected for 85 consecutive entire lower extremity Chinese OA patients. A three-dimensional method was used to simulate intramedullary rod penetration. The intramedullary rods were inserted toward the anterior (TA), center (TC), and posterior (TP) of the femoral canal, respectively. Four penetration depths of 150, 200, 250, and 300 mm from the joint line were set. The intersection angle was measured between the simulated intramedullary rod and the mechanical axis of the femur (FMA) on the sagittal plane. Our study included 85 Chinese OA patients: 46 women, with a mean age of 65.7 ± 8.4 years (range, 51-85 years) and 39 men, with a mean age of 65.6 ± 8.1 years (range, 46-86 years). The intersection angle between the FMA and the femoral anatomical axis was smaller in men, 2.4° ± 1.6° (range, 0°-4.8°), than in women, 3.5° ± 2.3° (range, 0.7º-8.2°), with a significant statistical difference (P < 0.01). In the comparison of the intersection angle between the simulated intramedullary rod and the FMA, there was no st...Continue Reading

References

Sep 4, 2007·Clinical Orthopaedics and Related Research·Tameem M YehyawiSteve S Liu
Mar 20, 2013·The Journal of Arthroplasty·Yukihide MinodaHirokai Nakamura
Aug 31, 2013·Clinical Orthopaedics and Related Research·Sumesh M ZingdeDouglas A Dennis
Jun 1, 2015·European Journal of Orthopaedic Surgery & Traumatology : Orthopédie Traumatologie·K S ManjunathG Vineeth
Nov 20, 2015·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Jae Han KoKwan Kyu Park
Sep 6, 2017·Journal of Orthopaedic Science : Official Journal of the Japanese Orthopaedic Association·Masanori TsubosakaTomoyuki Matsumoto
Mar 22, 2018·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Marco A MarraAte B Wymenga
May 28, 2019·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Paola KoenenHolger Bäthis

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