Observational studyBMC musculoskeletal disorders2022
Percussion test: description and diagnostic accuracy of a new manual test for bone marrow edema of the knee.
Observational study in BMC musculoskeletal disorders, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed, 4 citations in OpenAlex.
- Association between low-density lipoprotein and structural changes in the knee joint of patients with symptomatic osteoarthritis is mediated by relative fat mass.European journal of medical research · 2026Article
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundPrompt diagnosis of bone marrow lesion (BML) is difficult but critical for correct treatment. Magnetic resonance imaging is the gold standard, although expensive and time consuming. Simple and reliable clinical test for BML detection is lacking. Aim of the study is to describe a new manual clinical test called Percussion Test (PT) and to statistically determine its diagnostic accuracy in BML, compared to MRI imaging.
methodsAfter evaluation of the inclusion and exclusion criteria, 218 consecutive patients with unilateral knee pain and age comprised between 18 and 80 years old were enrolled in our observational prospective study. Informed consent was obtained for each patient. After medical history collection, PT was performed by a single operator as described. MRI was performed in the affected knee to detect the presence of BML. Coherence in PT and MRI assessment was evaluated in each quadrant of the knee via contingency tables, as sensitivity, specificity, NPV, PPV and diagnostic accuracy were calculated.
resultsNo correlation with a positive PT was demonstrated for the covariables gender (p = 0.156), age (p = 0.272) and BMI (p = 0.639). PT showed a sensitivity ranging from 60.6 (40.6-80.6) to 79.5 (63.0-96.0) and a specificity ranging from 85.7 (80.0-91.5) to 96.0 (93.1-98.9) depending on knee quadrant. Diagnostic accuracy ranged from 81.6 (75.9-86.6) to 89.4 (84.6-93.2), and p-value was < 0.00001 in a chi-squared analysis for all quadrants.
conclusionsPT showed sensitivity and specificity values that are comparable with other clinical tests routinely adopted in clinical practice. In the absence of other reliable clinical test, PT has the potential to become a useful bedside tool in the diagnosis and management of BMLs.
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