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- Title
Ultrasonography for quantitative assessment of knee joint effusions—useful tool for objective evaluation of rehabilitation progress?
- Authors
Karaszewski, Willi; Pekanovic, Ana; Streich, Nikolaus Alexander; Herbort, Mirco; Petersen, Wolf; Schmidt-Lucke, Caroline
- Abstract
Purpose: We sought to externally validate ultrasonography (US) for quantification of suprapatellar effusion size to improve diagnosis and individualised rehabilitation strategies in knee rehabilitation after anterior cruciate ligament reconstruction (ACLR) surgery. Methods: US was performed on 35 patients as part of the ongoing CAMOPED study. Data were collected in ACLR and post surgery in defined intervals up to one year post-operation. The palpatory assessment was graded using the International Knee Documentation Committee (oIKDC). Results: In a total of 164 sonographies, a strong correlation between palpatory and US effusion (r = 0.83, p < 0.01) with lower deviations in US quantification compared to palpatory quantification Y = 1.15 + 0.15* x was seen. Threshold values could be determined for the detection of effusions by palpation and for the differentiation between mild and moderate/severe effusions (effusion depth: 2.6 mm and resp. 5.8 mm, respectively). Conclusions: As demonstrated in this multicenter study, the size of suprapatellar effusions can be easily quantified with high accuracy using standardised bedside ultrasound. Especially in moderate to severe effusions, US provides a practical and reliable tool for outcome measurement superior to palpatory assessment with the goal of optimising individual recommendations during the rehabilitation course. Furthermore, for the first time, it has been possible to define sonographic threshold values for the detection of effusion and differentiation of mild vs. moderate/severe effusion by means of palpation.
- Subjects
KNEE joint; JOINT diseases; ANTERIOR cruciate ligament surgery; PALPATION; KNEE pain; OTITIS media with effusion; ULTRASONIC imaging
- Publication
International Orthopaedics, 2023, Vol 47, Issue 4, p955
- ISSN
0341-2695
- Publication type
Article
- DOI
10.1007/s00264-023-05697-x