Table of Contents Author Guidelines Submit a Manuscript
Pain Research and Treatment
Volume 2016, Article ID 3710312, 12 pages
http://dx.doi.org/10.1155/2016/3710312
Research Article

Factors Related to Postoperative Pain Trajectories following Total Knee Arthroplasty: A Longitudinal Study of Patients Admitted to a Russian Orthopaedic Clinic

1Department of Knee Surgery N 17, Russian Research Institute of Traumatology and Orthopaedics n.a. R.R. Vreden, Saint Petersburg 195427, Russia
2Department of Surgery, Lovisenberg Diakonale Hospital, 0440 Oslo, Norway
3Department of Nursing Science, Institute of Health and Society, Faculty of Medicine, University of Oslo, 0318 Oslo, Norway
4Department of Family Health Care Nursing, University of California, San Francisco, CA 94143-0606, USA
5Department of Research and Development, Lovisenberg Diakonale Hospital, 0440 Oslo, Norway
6Department of Knee Surgery N 10, Russian Research Institute of Traumatology and Orthopaedics n.a. R.R. Vreden, Saint Petersburg 195427, Russia
7Department of Research and Development, Division of Emergencies and Critical Care, Oslo University Hospital, 0424 Oslo, Norway
8Institute of Clinical Medicine, University of Oslo, 0316 Oslo, Norway

Received 30 September 2015; Revised 7 December 2015; Accepted 8 December 2015

Academic Editor: Giustino Varrassi

Copyright © 2016 Nikolai Kornilov et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This study explores sociodemographic, clinical, and surgical factors in relation to pain trajectories during the first 3 days following total knee arthroplasty (TKA). 100 patients (mean age 63.5 ± 7.8 years and 93% female) consecutively admitted for uncomplicated primary TKA were prospectively included. Postoperative pain was assessed using pain diaries. Measures of preoperative pain, symptoms, daily functioning, quality of life, comorbidities, knee function, perioperative characteristics, and physical/biochemical parameters were also evaluated. All pain ratings decreased in the three days following surgery () as well as the reported number of daily hours in moderate/severe pain (). Women reported more pain than men (). Pain trajectories did not differ by education, employment, cohabitation, or any patient clinical and biochemical characteristics but were significantly related to preoperative anxiety (). Patients reporting moderate/severe pain prior to surgery also reported more hours in moderate/severe pain on days 0–3 postoperatively (). Patients with surgeries longer than 90 min reported more hours of moderate/severe pain compared with patients who had shorter surgeries (), and similar results were observed for ratings of pain with activity (). In this sample, only female gender, higher levels of preoperative pain and anxiety, and longer surgical duration were associated with increased pain after TKA.