Chinese Journal of Tissue Engineering Research ›› 2019, Vol. 23 ›› Issue (32): 5103-5109.doi: 10.3969/j.issn.2095-4344.1461

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Comparison of early outcomes of minimally invasive SuperCap approach and conventional posterolateral approach for femoral head replacement

Wu Mingzhou, Li Rongqun, Zhou Jun, Zhang Lianfang, Zhu Feng, Wang Yijun, Sun Houyi, Zhang Weicheng, Xu Yaozeng   

  1. Department of Orthopedics, the First Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu Province, China
  • Online:2019-11-18 Published:2019-11-18
  • Contact: Xu Yaozeng, Chief physician, Professor, Doctoral supervisor, Department of Orthopedics, the First Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu Province, China
  • About author:Wu Mingzhou, Master candidate, Department of Orthopedics, the First Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu Province, China
  • Supported by:
    the National Natural Science Foundation of China, No. 81301865 (to ZLF)| the Natural Youth Science Foundation of Jiangsu Province of China, No. BK20150299 (to ZLF)

Abstract:

BACKGROUND: Compared with the traditional posterolateral approach, the SuperCap approach for the treatment of femoral neck fractures has the advantageous of short incision, less damage to the soft tissue around the hip joint during the operation, no need for dislocation, and the patients can do postoperative functional exercise more early.
OBJECTIVE: To compare the short-term clinical outcomes of minimally invasive SuperCap approach and posterolateral approach.
METHODS: A total of 48 cases from October 2016 to April 2018 were collected, including 24 cases of SuperCap approach (SuperCap group) and 24 cases of conventional approach (conventional group). Operation time, length of incision, intraoperative blood loss, postoperative blood transfusion, postoperative hospital stay and complications were recorded in both groups. The hip joint function was evaluated before surgery and 1, 3, 5, 7, 14, 30, 90, and 180 days after surgery by the use of Visual Analogue Scale and HHS. The time up and go test, timed stair climb test, and short performance physical battery test were conducted at 3, 5, 7, 14, 30, 90, and 180 days after surgery.
RESULTS AND CONCLUSION: (1) The length of incision in the SuperCap group was shorter than that in the conventional group (P < 0.05). There was no significant difference in the operation time, intraoperative blood loss, postoperative blood transfusion and postoperative hospital stay between the two groups (P > 0.05). (2) One case suffered from deep vein thrombosis in the SuperCap group and two cases suffered from deep vein thrombosis in the conventional group. No complications such as infection, dislocation, prosthesis loosening, sciatic nerve injury and paralysis occurred in the two groups. (3) The Visual Analogue Scale scores of the SuperCap group were lower than that of the conventional group (P < 0.05). The HHS scores at 1, 3 and 5 days after operation were higher in the SuperCap group than in the conventional group (P < 0.05). There was no difference in above scores at the other time points between the two groups (P > 0.05). (4)The results of the time up and go test on the 5th day after operation in the SuperCap group were better than that in the conventional group (P < 0.05). The results of the timed stair climb test on the 14th and 30th days after operation were better in the SuperCap group than that in the conventional group (P < 0.05). The results of the short performance physical battery test within 30 days after operation were better in the SuperCap group than that of the conventional group (P < 0.05). (5) The results showed that compared with the traditional approach, SuperCap approach has the advantages of short incision, small intraoperative soft tissue injury, rapid recovery of hip joint function, light pain, and good coordination of hip muscles.

Key words: minimally invasive, artificial femoral head replacement, SuperCap approach, traditional posterolateral approach, femoral neck fracture, hip, artificial joint, HHS score, short performance physical battery test

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