This paper investigates and discusses the effect of perioperative plexus catheter treatment in former CRPS patients. A retrospective matched-pair analysis was conducted on 10 CRPS patients with comparable injuries, who underwent surgery in the disease-free interval. In 10 cases, the procedure was performed with perioperative plexus catheter treatment (intervention group), whereas 10 patients did not receive perioperative plexus catheter treatment (control group). In the intervention group, after a follow-up time of 105 (20-184) days after the last surgical procedure, pain intensity on the visual analogue scale (VAS; 0 to 10) was 6.4 (4-8), fingertip-to-palm distance averaged 3.2 (0-7.6) cm, active range of wrist motion was 47.5 (0-95), and grip strength was 9.2 (2.1-16.6) kg. In the control group, after a follow-up time of 129 (19-410) days since the last surgical procedure, pain intensity on the visual analogue scale was 6 (3-10), fingertip-to-palm distance averaged 2.7 (0-4.5) cm, active range of wrist-motion was 64 (0-125), and grip strength was 12.4 (0.8-23.8) kg. There was no significant difference between the groups. There was no recurrence of CRPS disease in either group after surgery. There is no evidence so far for perioperative plexus catheter treatment to prevent recurrence in former CRPS patients.
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