Skin Temperature Change Following Infected and Non-infected Total Knee Arthroplasty: A Systematic Review. [Review]
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All Authors
Jesry, F.
Pandit, H.
Clarke, D.
Venkatesh, R.
LTHT Author
Venkatesh, Ramakrishnan
LTHT Department
Orthopaedics
Non Medic
Publication Date
2025
Item Type
Journal Article
Review
Review
Language
Subject
Subject Headings
Abstract
Total knee arthroplasty (TKA) is a common and growing surgical intervention for end-stage knee osteoarthritis. Postoperative changes in skin temperature (DELTAST) over the operated knee are well recognised, yet their clinical relevance, particularly as a potential marker for periprosthetic joint infection (PJI), remains uncertain. This systematic review aimed to define the pattern of skin temperature change following TKA and assess its potential utility in detecting PJI. A comprehensive literature search was conducted using PubMed, EMBASE, Google Scholar, and the Cochrane Database up to April 2025, adhering to PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. Eleven studies were included, covering a total of 1,212 patients. Inclusion criteria required objective DELTAST measurements of the anterior knee in adults (>=18 years) with at least six months of follow-up. Studies on both uncomplicated TKA and TKA complicated by PJI were analysed narratively. All non-infected cases demonstrated a marked rise in DELTAST over the operated knee, peaking within the first week postoperatively with a weighted mean of 3.42degreeC, followed by a progressive decline to 0.9degreeC at six months and 0.48degreeC at one year. In contrast, PJI cases (n=25, conservatively managed) exhibited greater and more persistent DELTAST elevations, particularly within the early postoperative period. At one week post-TKA, the infected group had a mean DELTAST 0.78degreeC higher than the non-infected cohort. Patients undergoing revision for PJI (n=3) showed extreme elevations exceeding 4degreeC, sustained through the first three months postoperatively. Skin temperature over the knee typically follows a predictable decline after TKA in uncomplicated cases. While elevated or prolonged DELTAST may indicate infection, current evidence (limited by heterogeneous methods and small sample sizes) does not support DELTAST as a standalone diagnostic marker for PJI. Further large-scale, standardised studies are required to explore its role in early infection detection.
Journal
Cureus