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CLINICAL STUDIES

Computer-Assisted Cryotherapy as an Adjunct to Multimodal Analgesia Significantly Reduces Opioid Consumption and Improves Early Outcomes Following Total Knee Arthroplasty: A Prospective Randomized Controlled Trial

Received: 01 December 2025
Accepted: 08 December 2025
Published: 11 December 2025

Computer-Assisted Cryotherapy as an Adjunct to Multimodal Analgesia Significantly Reduces Opioid Consumption and Improves Early Outcomes Following Total Knee Arthroplasty: A Prospective Randomized Controlled Trial

Raffaella Alonzo, Veronica Giuliani, Silvia Frontini, Stefania De Sanctis, Ilaria Nicolosi, Daniele Mazza, Carmelo D’arrigo

Abstract

Background

Effective postoperative pain management following Total Knee Arthroplasty (TKA) remains a significant clinical challenge, with conventional opioid-based regimens posing risks of adverse effects and potential dependence. Computer-Assisted Cryotherapy (CAC) represents an advanced, non-pharmacological intervention designed to mitigate pain and swelling through regulated cold compression. This study evaluated the impact of adjunctive CAC on opioid consumption and early recovery outcomes within a modern multimodal analgesia protocol.

Methods

In this prospective randomized controlled trial, 210 patients undergoing primary TKA were allocated to either a control group (n = 105) receiving standard multimodal analgesia or an intervention group (n = 105) receiving identical pharmacologic management plus CAC (2 daily sessions of 3 hours each at 10 °C with intermittent compression). Primary outcomes included pain intensity measured on a Visual Analogue Scale (VAS) at 24, 72, and 120 hours postoperatively and total opioid consumption— converted to morphine milligram equivalents (MME)—during the first 5 postoperative days. Secondary outcomes comprised range of motion (ROM), limb swelling, Length Of Hospital Stay (LOS), and complication rates.