Chinese Journal of Tissue Engineering Research ›› 2019, Vol. 23 ›› Issue (20): 3130-3135.doi: 10.3969/j.issn.2095-4344.1234

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Self-control versus continuous passive motion exercise following primary total knee arthroplasty

Zhang Hui1, Liu Biquan1, Li Hong1, Liu Jingjun1, Gan Yuyun1, Li Lunlan2, Yin Zongsheng1   

  1. 1Department of Joint Surgery, 2Department of Nursing, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui Province, China
  • Online:2019-07-18 Published:2019-07-18
  • About author:Zhang Hui, MD, Associate chief physician, Department of Joint Surgery, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui Province, China
  • Supported by:

    the Natural Science Foundation of Anhui Province, No. 1508085MH183 (to LLL); the Natural Science Research of Universities in Anhui Province, No. KJ2018A0662 (to ZH)

Abstract:

BACKGROUND: Functional exercise after total knee arthroplasty is critical for the recovery of knee joint function. Continuous passive motion exercise used to be a standard exercise method, but its effect is controversial, and self-controlled exercise can achieve satisfactory functional recovery.

OBJECTIVE: To explore the difference between self-control and continuous passive motion function exercise during hospitalization following total knee arthroplasty.
METHODS: Eighty patients who underwent primary unilateral total knee arthroplasty were divided into two groups (n=40/group), and then underwent active self-control and continuous passive motion functional exercise at postoperative 24 hours. The study was approved by the Ethics Committee of the First Affiliated Hospital of Anhui Medical University, and all participants signed the informed consents. The baseline data, hospitalization time, drainage volume, hemoglobin level, and range of motion and Visual Analog Scale score at rest at 1, 3, 5 and 7 days post-operation were evaluated and compared between two groups.
RESULTS AND CONCLUSION: (1) There was no significant difference in the baseline data between two groups (P > 0.05). (2) Postoperative Visual Analog Scale score at rest, maximum extension angle, hospitalization time, hemoglobin level and hematocrit showed no significant difference between two groups (P > 0.05). (3) The maximal flexion angle at 7 days post-operation and circumference of knee joint at 3 days post-operation in the active self-control group were significantly superior to those in the continuous passive motion group (P < 0.05). (4) These results indicate that there is no significant difference between self-control method and the traditional continuous passive motion function exercise following total knee arthroplasty. Continuous passive motion cannot be used as a routine method, and self-control function exercise can meet the clinical needs.

Key words: primary total knee arthroplasty, continuous passive motion, functional exercise, range of motion, pain, drainage volume, blood volume, circumference of knee joint

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