Abstract
BackgroundLow knee awareness after minimally invasive total knee arthroplasty (TKA) has become the ultimate target of a natural-feeling knee that meets patient expectations. The objective of this research was to compare the clinical outcomes of TKA via the mini-midvastus (MMV) approach or the medial parapatellar (MPP) approach, and to evaluate which approach can lead to a better quality of life after surgery.MethodsFrom January 2015 to December 2016, a retrospective cohort study was conducted in 330 patients who underwent TKA via a mini-midvastus (MMV) approach. During this period, we also selected 330 patients who underwent TKA via a medial parapatellar (MPP) approach (MPP group) for comparison. Clinical results were assessed with the visual analog scale score for pain, range of motion, and the Knee Society Score. The Forgotten Joint Score was used to analyze the ability to forget the joint.ResultsThere were significant differences with regard to visual analog scale score, range of motion, and the Knee Society Score until 6 months after surgery between the MMV and MPP groups (p < 0.05), but the differences were not significant at 12 months, 24 months, and 36 months after surgery. However, there were significant differences in the Forgotten Joint Score between the groups during the follow-up period (p < 0.05).ConclusionWhen forgetting the artificial joint after TKA is the ultimate target, better quality of life can be acquired by performing TKA via the MMV approach. In addition, compared with the MPP approach, the MMV approach can offer less pain and a faster recovery.
Highlights
Low knee awareness after minimally invasive total knee arthroplasty (TKA) has become the ultimate target of a natural-feeling knee that meets patient expectations
The objective of this research was to conduct a retrospective cohort study to investigate the functional outcomes of TKA via the MMV or medial parapatellar (MPP) approaches using the Forgotten Joint Score (FJS), and evaluate which approach can lead to better quality of life (QOL) after surgery
The visual analog scale (VAS), range of motion (ROM), and Knee Society Score (KSS) in the MMV group were better than those in the MPP group within 6 months (p < 0.05), but no significant differences were found at 12 months, 24 months, and 36 months after surgery (p > 0.05) (Tables 3 and 4)
Summary
Low knee awareness after minimally invasive total knee arthroplasty (TKA) has become the ultimate target of a natural-feeling knee that meets patient expectations. The objective of this research was to compare the clinical outcomes of TKA via the mini-midvastus (MMV) approach or the medial parapatellar (MPP) approach, and to evaluate which approach can lead to a better quality of life after surgery. Total knee arthroplasty (TKA) is the best choice for the treatment of end-stage osteoarthritis, and it can restore knee function, relieve pain, and improve quality of life (QOL), with 95% of patients achieving a good prosthesis survival rate [1, 2]. The medial parapatellar (MPP) approach affords excellent surgical visualization [3], it injures the quadriceps tendon and may cause weakened extensor function, and the functional outcome remains unsatisfactory [4]. The mini-midvastus (MMV) approach reduces the injury to the quadriceps, but is associated with improved postoperative outcomes [5]. There is a growing tendency to use patient-reported outcome measure (PROM) tools to evaluate patient outcomes [11]
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