2024, Vol. 28 ›› Issue (24): 3822-3826

Application of balance technique and measurement osteotomy technique under Offset Repo-Tensor in total knee arthroplasty

Huang Xueli1, Luo Ruiqin1, Chen Sheng2, Li Xiaowu2, Chen Haibo2, Zeng Qingqiang2, Zheng Zhihui2   

Abstract: BACKGROUND: At present, measurement osteotomy technique and gap balance technique are the two main surgical methods in total knee arthroplasty. Both methods have their advantages and disadvantages. By adjusting the osteotomy angle, the gap balance technique can reduce the release of soft tissue and obtain a more balanced flexion and extension space. The clinical efficacy of gap balance technique is superior, but this surgical method lacks tools and is easily influenced by the surgeon’s surgical experience and subjective judgment, with more errors. Measurement osteotomy technique has a short learning curve, but it relies on anatomic markers and is prone to many complications due to inaccurate positioning. In recent years, many instrument companies have successively developed and launched tools that can improve the quality of surgery. However, there are still few reports about the tool.
OBJECTIVE: To compare the clinical efficacy of gap balance technique and measurement osteotomy technique under Offset Repo-Tensor in total knee arthroplasty, and explore the value of Offset Repo-Tensor in total knee arthroplasty.
METHODS: The medical records of 85 patients with total knee arthroplasty were collected and divided into two groups according to the operation method. Group A consisted of 44 patients who underwent total knee arthroplasty using a gap balance technique combined with Offset Repo-Tensor. Group B consisted of 41 patients who underwent total knee arthroplasty using measurement osteotomy technique. Surgical time, American Knee Society Score, knee range of motion, changes in lower limb alignment, and postoperative complications were compared between the two groups to evaluate the clinical efficacy of gap balance technique combined with Offset Repo-Tensors in total knee arthroplasty.
RESULTS AND CONCLUSION: (1) All 85 patients were followed up. (2) Postoperative knee range of motion in both groups was higher than that before surgery (P < 0.05), and the improvement in group A was more significant than that in group B (P < 0.05). (3) American Knee Society Score in both groups after surgery was higher than that before surgery (P < 0.05), and the American Knee Society Score in group A was higher than that in group B at 2 weeks, 1, 3 months, and the last follow-up (P < 0.05). (4) The operation time of group A was slightly shorter than that of group B, but the difference was not significant (P > 0.05). (5) The lower limb alignment in both groups was improved after operation, but there was no significant difference between the two groups (P > 0.05). (6) The complication rate of group A (2%) was lower than that of group B (7%), but there was no significant difference between the two groups (P > 0.05). (7) It is indicated that compared with the measurement osteotomy technique, the combination of Offset Repo-Tensor and gap balance technique can elevate the clinical effect and improve the function and motion range of the knee joint.

Key words: total knee arthroplasty, measurement osteotomy technique, gap balance technique, Offset Repo-Tensor, osteoarthritis