Abstract:
:We prospectively monitored pain scores on 24 patients who underwent bilateral total knee arthroplasty (TKA). Patients were blinded to receiving either a functional or placebo pain control infusion pumps. After 3 days, pump volume was recorded, and patients were asked to identify which knee they believed received the functional pain control infusion pump. Fourteen patients (58%) correctly identified their knee with the functional pain control infusion pump. Pump volumes ranged from 70 to 310 mL, with an average flow rate of 4.3 mL/hour. Positive identification rates were similar to rates routinely generated from standard placebo symptom treatment pain trials (0%-60%). Our data suggest that the placebo effect plays at least a partial role in pain control infusion pump effectiveness, and that pain control infusion pump use for TKA unpredictably contributes to postoperative pain management. [corrected]
journal_name
Orthopedicsjournal_title
Orthopedicsauthors
Argintar E,Armstrong B,Zawadsky M,Evans B,Romness Ddoi
10.3928/01477447-20110124-18subject
Has Abstractpub_date
2011-03-01 00:00:00pages
188issue
3eissn
0147-7447issn
1938-2367journal_volume
34pub_type
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