Chinese Journal of Tissue Engineering Research ›› 2019, Vol. 23 ›› Issue (22): 3506-3511.doi: 10.3969/j.issn.2095-4344.1278

Previous Articles     Next Articles

Novel absorbable cannulated screw combined with non-absorbable suture-tension band versus traditional advanced tension band for treating patellar fractures

Lin Yipeng1, Yue Kai2, Xu Yingshu2, Li Qi1, Huang Xihao1, Li Jian1
  

  1. 1Department of Sports Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China; 2Department of Orthopedics, Chengdu First People’s Hospital of Longquanyi District, Chengdu 610100, Sichuan Province, China
  • Received:2019-03-09
  • Contact: Li Qi, MD, Associate chief physician, Department of Sports Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
  • About author:Lin Yipeng, MD, Department of Sports Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
  • Supported by:

    the Project of Sichuan Provincial Science and Technology Department, No. 2017SZ0017 (to LJ); the “135” Engineering Project of West China Hospital of Sichuan University, No. ZY2017301 (to LJ)

PDF

39

Abstract:

BACKGROUND: For transverse patella fractures, traditional advanced tension band possesses the risk for secondary surgery, which needs long-term rehabilitation. Kirschner wire or steel wire may pierce the skin and cause pain, so the treatment scheme needs to be improved.
OBJECTIVE: To compare the clinical efficacy of absorbable cannulated screw combined with non-absorbable suture-tension band and traditional advanced tension band for treating patella fractures.
METHODS: Clinical data of 49 patients with transverse patella fractures were analyzed retrospectively, including 16 cases of absorbable cannulated screw combined with non-absorbable suture-tension band (group A) and 33 cases of modified traditional tension band (group B). All patients signed the informed contents, and the study was approved by the ethics committee of the hospital. The time of returning normal activity and hospitalization cost were compared. The anteroposterior and lateral film of the knee joint at postoperative 1 day, 3 and 6 months, and the Lysholm and International Knee Documentation Committee scores at baseline, postoperative 6 and 12 months were compared.
RESULTS AND CONCLUSION: (1) Both groups showed improved Lysholm and International Knee Documentation Committee scores at baseline, postoperative 6 and 12 months (P < 0.001). The scores at postoperative 6 months in the group A were significantly higher than those in the group B (P < 0.001). There was no significant difference in the scores at postoperative 12 months between two groups (P > 0.05). (2) The time of returning normal activity in the group B was significantly longer than that in the group A (P=0.03). (3) The average hospitalization cost in the group A was ¥7 833 (¥8 000-10 000), and ¥11 769 (¥10 000-20 000) in the group B (P < 0.05). (4) At postoperative 1 day, the X-ray films showed a good alignment and no obvious dislocation, and articular surface was smooth and flat in both groups. At postoperative 3 months, the group A showed obscure fracture line and the obscure nail cap on the X-rays. Fracture line disappeared and the nail cap was invisible in the group A at postoperative 6 months. In the group B, detachment of the wire and needle was observed at postoperative 3 months. (5) In summary, compared with the traditional advanced tension band, the novel absorbable cannulated screw combined with non-absorbable suture-tension band exerts better clinical outcomes in the treatment of transverse patellar fractures, which is considered as an alternative method.

Key words: patellar fracture, absorbable cannulated screw, non-absorbable suture, internal fixation, advanced tension band, biomechanics, fracture line

CLC Number: