Chinese Journal of Tissue Engineering Research ›› 2021, Vol. 25 ›› Issue (30): 4823-4827.doi: 10.12307/2021.268

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Calcium sulfate antibiotic carrier in the treatment of periprosthetic infection after arthroplasty and its effect on serum calcium

Gao Tianhao, Qian Huifang, Yang Shangliang, Xin Chaofei, Lu Shitao, Xu Jianzhong    

  1. First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China 
  • Received:2020-08-26 Revised:2020-08-28 Accepted:2020-09-19 Online:2021-10-28 Published:2021-07-29
  • Contact: Xu Jianzhong, MD, Chief physician, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China
  • About author:Gao Tianhao, Master candidate, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan Province, China

Abstract: BACKGROUND: Calcium sulfate, as an antibiotic carrier, has been widely used in the treatment of osteomyelitis, but its role in periprosthetic infection still needs to be further explored. 
OBJECTIVE: To observe the effects of calcium sulfate sustained-release system on the treatment of periprosthetic joint infection following arthroplasty and the postoperative serum calcium concentration.
METHODS: Retrospective analysis was performed on 24 patients who were admitted to the Department of Orthopedics of the First Affiliated Hospital of Zhengzhou University and developed periprosthetic joint infection following arthroplasty from January 2019 to April 2020. Depending on the stage of the patient’s periprosthetic joint infection and whether there was etiological evidence, the patients were treated with arthroscopic debridement, incision debridement, one-stage revision arthroplasty or two-stage revision arthroplasty. All patients were implanted with a calcium sulfate sustained-release system intraoperatively. The trial was approved by the Ethics Committee of First Affiliated Hospital of Zhengzhou University (Approval No. 2020-KY-0229). 
RESULTS AND CONCLUSIONS: (1) All patients completed the three-month follow-up. (2) The incidence of asymptomatic hypocalcemia was high. Specifically, two patients experienced hypocalcemia requiring emergency treatment, and one patient experienced hypercalcemia not requiring treatment at 1 day postoperatively. The preoperative and postoperative serum calcium levels were comparable in these patients. (3) Totally 23 patients had satisfactory wound healing, and the prosthesis was well positioned without recurrence of infection; one patient developed infection that recurred following reoperation. (4) In all the patients, erythrocyte sedimentation rate and C-reactive protein decreased significantly postoperatively (P < 0.01); Harris hip and knee scores improved postoperatively (P < 0.01). (5) These suggest that calcium sulfate sustained-release system can effectively improve periprosthetic joint infection following arthroplasty, and the patients are at a high risk of postoperative asymptomatic hypocalcemia.

Key words: calcium sulfate, serum calcium, periprosthetic joint infection, debridement antibiotics irrigation and implant retention, arthroplasty, artoroscopic debridement, arthrorevision, asymptomatic hypocalcemia, joint function recovery

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