Significance of risk factors related to the features of knee osteoarthritis in forecasting long-term results of unicompartmental knee replacement
Summary. Aim: to establish the prognostic value of risk factors associated with the peculiarities of knee osteoarthritis in relation to the long-term results of unicompartmental knee replacement. Materials and methods. Long-term results of unicompartmental knee replacement in 99 patients with medial knee osteoarthritis were analyzed — 26 (26.26%) men and 73 (73.74%) women. The average age was 63.78±8.21 years. According to the results of the Oxford Knee Score questionnaire, 4 groups were formed. Group 1 included 62 (62.63%) patients without progression of knee osteoarthritis in long-term period. Mild manifestations of knee osteoarthritis were found in 23 (23.23%) patients of group 2, moderate — in 10 (10.10%) examined 3 groups, and 4 (4.04%) patients of group 4 recorded severe manifestations of the disease. The average result of treatment in the remote period was 37.65±7.89. Risk factors such as pathogenetic variants of osteoarthritis, previous joint surgery, stage, duration of the disease before surgery and duration of the postoperative period were assessed. «Statistica 13» was used for statistical analysis. Results. It was found that the duration of the disease before surgery ≤5 years (odds ratio (OR) 2.70; 95% confidence interval (CI) 1.11–6.58; p=0.02) and the duration of the postoperative period ≤5 years (OR 5.01; 95% CI 1.90–13.20; p=0.0007) increase the chances of no progression of knee osteoarthritis in the long term. Instead, the presence of previous operations in the knee joint (OR 12.0; 95% CI 1.15–125.52; p=0.02) are associated with the progression of knee osteoarthritis. Conclusion. The high prognostic value of risk factors associated with the peculiarities of knee osteoarthritis in assessing the long-term results of unicompartmental knee replacement has been proven.
- 1. Presti M.L., Costa G.G., Cialdella S. et al. (2018) Return to Sports after Unicompartmental Knee Arthroplasty: Reality or Utopia? A 48-Month Follow-Up Prospective Study. J. Knee Surg., 1–6. doi.org/10.1055/s-0038-1635111.
- 2. Sun X., Su Zh. (2018) A meta-analysis of unicompartmental knee arthroplasty revised to total knee arthroplasty versus primary total knee arthroplasty. J. Orthopaed. Surg. Res., 13(158): 1–9. doi.org/10.1186/s13018-018-0859-1.
- 3. Kamenaga T., Hiranaka T., Kikuchi K. et al. (2018) Influence of tibial component rotation on short-term clinical outcomes in Oxford mobile-bearing unicompartmental knee arthroplasty. Knee, 1–9. doi.org/10.1016/j.knee.2018.06.016.
- 4. Murray D.W., Parkinson R.W. (2018) Usage of unicompartmental knee arthroplasty. Bone Joint J., 100–B: 432–435. doi:10.1302/0301-620X.100B4. BJJ-2017-0716.R1.
- 5. Wada K., Hamada D., Takasago T. et al. (2018) Native rotational knee kinematics is restored after lateral UKA but not after medial UKA. Knee Surgery, Sports Traumatology, Arthroscopy, 1–6. doi.org/10.1007/s00167-018-4919-1.
- 6. Campi S., Tibrewal S., Cuthbert R., Tibrewal S.B. (2017) Unicompartmental knee replacement — Current perspectives. J. Clin. Orthop. Trauma, 1–7. doi.org/10.1016/j.jcot.2017.11.013.