Computer assisted total knee arthroplasty: 2.5 years follow-up of 200 cases. 2021

Cristian Aletto, and Arnaldo Zara, and Donato Notarfrancesco, and Nicola Maffulli
Department of Musculoskeletal Disorders, Faculty of Medicine and Surgery, University of Salerno, 84084, Baronissi, Italy; Clinica Ortopedica, Ospedale San Giovanni di Dio e Ruggi D'Aragona, 84131, Salerno, Italy. Electronic address: cris.aletto28@gmail.com.

BACKGROUND Computer assisted surgery in total knee arthroplasty (TKA) should improve accuracy of both femoral and tibial components placement. This study evaluated the functional outcomes of computer navigated total knee arthroplasty through the Knee Society Score (KSS) and Tegner Lysholm Knee Scoring Scale (TLKSS). METHODS Between September 2007 and February 2013, 180 patients (200 knees; 109 females and 71 males; mean age: 64 years) undergoing computer-assisted TKA were recruited. Plain radiographs and CT scans were performed post-operatively to evaluate alignment. The clinical outcomes were measured using the KSS and TLKSS pre-operatively and after 6, 12 and 36 months. RESULTS The mean follow-up duration was 2.5 years. The mean tourniquet time was 72 ± 13.4 min, and patients received an average of 0.6 ± 0.82 units of blood after surgery. The average preoperative KSS functional score of 44.6 ± 13.7 improved to 80.4 ± 16.4 after 2 years. The average preoperative TLKSS improved to 71.4 ± 13.5 after 2 years. The mechanical axis was within ±3° in all patients. No axial malalignments were observed on TC Scan. Three patients (1.6% of cases) required revision. CONCLUSIONS Computer assisted TKA allows reproducible alignment and kinematics, reducing outliers, provides ligament balancing and ensures good short term outcomes in terms of KSS functional score and TLKSS.

UI MeSH Term Description Entries
D007719 Knee Joint A synovial hinge connection formed between the bones of the FEMUR; TIBIA; and PATELLA. Superior Tibiofibular Joint,Joint, Knee,Joint, Superior Tibiofibular,Knee Joints,Superior Tibiofibular Joints,Tibiofibular Joint, Superior
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D005260 Female Females
D005500 Follow-Up Studies Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease. Followup Studies,Follow Up Studies,Follow-Up Study,Followup Study,Studies, Follow-Up,Studies, Followup,Study, Follow-Up,Study, Followup
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D016059 Range of Motion, Articular The distance and direction to which a bone joint can be extended. Range of motion is a function of the condition of the joints, muscles, and connective tissues involved. Joint flexibility can be improved through appropriate MUSCLE STRETCHING EXERCISES. Passive Range of Motion,Joint Flexibility,Joint Range of Motion,Range of Motion,Flexibility, Joint
D016896 Treatment Outcome Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series. Rehabilitation Outcome,Treatment Effectiveness,Clinical Effectiveness,Clinical Efficacy,Patient-Relevant Outcome,Treatment Efficacy,Effectiveness, Clinical,Effectiveness, Treatment,Efficacy, Clinical,Efficacy, Treatment,Outcome, Patient-Relevant,Outcome, Rehabilitation,Outcome, Treatment,Outcomes, Patient-Relevant,Patient Relevant Outcome,Patient-Relevant Outcomes
D019645 Arthroplasty, Replacement, Knee Replacement of the knee joint. Knee Replacement, Total,Arthroplasties, Knee Replacement,Arthroplasties, Replacement, Knee,Arthroplasty, Knee Replacement,Arthroplasty, Replacement, Partial Knee,Knee Arthroplasty,Knee Arthroplasty, Total,Knee Replacement Arthroplasties,Knee Replacement Arthroplasty,Partial Knee Arthroplasty,Partial Knee Replacement,Replacement Arthroplasties, Knee,Replacement Arthroplasty, Knee,Replacement, Total Knee,Total Knee Replacement,Unicompartmental Knee Arthroplasty,Unicompartmental Knee Replacement,Unicondylar Knee Arthroplasty,Unicondylar Knee Replacement,Arthroplasty, Knee,Arthroplasty, Partial Knee,Arthroplasty, Total Knee,Arthroplasty, Unicompartmental Knee,Arthroplasty, Unicondylar Knee,Knee Arthroplasty, Partial,Knee Arthroplasty, Unicompartmental,Knee Arthroplasty, Unicondylar,Knee Replacement, Partial,Knee Replacement, Unicompartmental,Knee Replacement, Unicondylar,Total Knee Arthroplasty
D020370 Osteoarthritis, Knee Noninflammatory degenerative disease of the knee joint consisting of three large categories: conditions that block normal synchronous movement, conditions that produce abnormal pathways of motion, and conditions that cause stress concentration resulting in changes to articular cartilage. (Crenshaw, Campbell's Operative Orthopaedics, 8th ed, p2019) Osteoarthritis of Knee,Osteoarthritis of the Knee,Knee Osteoarthritides,Knee Osteoarthritis

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