A comparison of computer-assisted total knee arthroplasty through vastus medialis approach and conventional arthroplasty

doi:10.3969/j.issn.2095-4344.2016.22.002

Abstract

Abstract:

BACKGROUND: In the treatment of primary knee osteoarthritis, total knee arthroplasty is a common treatment, but there are some shortcomings in the traditional operation, which may lead to early failure of the prosthesis.

OBJECTIVE: To explore the difference of computer-assisted total knee arthroplasty by vastus medialis approach from the traditional total knee arthroplasty.

METHODS: A total of 79 patients with primary knee osteoarthritis were randomly divided into control group (41 cases) and observation group (38 cases), which underwent conventional total knee arthroplasty and computer-assisted total knee arthroplasty by vastus medialis approach. Surgical incision, operation time, total blood loss and drainage volume were recorded and compared in both groups. In 12 months of follow-up, Hospital for Special Surgery knee score was evaluated, and the complications were recorded and compared between the two groups.

RESULTS AND CONCLUSION: (1) Operative incision was significantly less in the observation group than in the control group. Operation time was significantly shorter in the observation group than in the control group. Total blood loss and drainage volume were significantly less in the observation group than in the control group (all P < 0.05). (2) Patients in both groups were followed up for 12 months. Index score and total score of knee function were significantly higher in the observation group than in the control group (all P < 0.05). (3) No adverse events such as infection, prosthesis loosening or fracture appeared in the observation group. In the control group, four cases affected prosthesis loosening. One case suffered from wound infection. Above events were improved obviously after active treatment. No serious complications occurred. The incidence of complications was significantly lower in the observation group than in the control group (P < 0.05). (4) The results show that, compared with the traditional operation, the choice of the femoral medial approach and the use of computer aided design technology can simulate the knee replacement process, set the cutting position, improve the accuracy and success rate of surgery, have less trauma, and effectively improve knee function, and reduce the incidence of postoperative complications.

中国组织工程研究杂志出版内容重点：人工关节；骨植入物；脊柱；骨折；内固定；数字化骨科；组织工程

Key words: Arthroplasty, Replacement, Knee, Osteoarthritis, Computer-Aided Design, Tissue Engineering

CLC Number:

R318

Liu Peng, Liu Ping-ping. A comparison of computer-assisted total knee arthroplasty through vastus medialis approach and conventional arthroplasty[J]. Chinese Journal of Tissue Engineering Research, doi: 10.3969/j.issn.2095-4344.2016.22.002.

Figures/Tables 2

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