Orthopedic Research and Reviews (Nov 2022)
Coronal Correction for Post-Traumatic Malalignment Using Robot-Assisted Total Knee Arthroplasty: A Case Series
Abstract
Ji-Hoon Baek,1 Su Chan Lee,1 Suengryol Ryu,2 Hye Sun Ahn,1 Chang Hyun Nam1 1Joint & Arthritis Research, Department of Orthopaedic Surgery, Himchan Hospital, Seoul, Republic of Korea; 2Department of Orthopaedic Surgery, Himnaera Hospital, Busan, Republic of KoreaCorrespondence: Chang Hyun Nam, Joint & Arthritis Research, Department of Orthopaedic Surgery, Himchan Hospital, 120, Sinmok-ro, Yangcheon-gu, Seoul, 07999, Republic of Korea, Tel +82-2-3219-9229, Fax +82-2-2061-8605, Email [email protected]: Achieving proper axis alignment can be difficult in the presence of posttraumatic extra-articular deformities in either the femur or the tibia. We present radiological outcomes following robot-assisted total knee arthroplasty (TKA) in patients with osteoarthritis of the knee accompanied by posttraumatic extra-articular deformities.Methods: We analyzed the outcomes of five knees in five patients with (1) Kellgren-Lawrence (K-L) Grade III–IV osteoarthritic knees, (2) the presence of posttraumatic extra-articular deformities either in the femur or the tibia, and (3) who underwent robot-assisted TKA. Their radiological findings were evaluated.Results: All five knees with initial deformity (mean 14.8°, range 12.7– 18.5°) were corrected to neutral alignment (mean 0.7°, range − 1.1– 2.7°). There was no postoperative outlier of hip-knee-ankle (HKA) angle.Conclusion: Our results indicate that robot-assisted TKA can be used to achieve proper limb alignment in patients with posttraumatic extra-articular deformities.Keywords: total knee arthroplasty, robot-assisted, outcomes
