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Published in: BMC Musculoskeletal Disorders 1/2021

Open Access 01-12-2021 | Research

A vibration sensor approach to detect intra-articular needle tip placement in the knee joint: a proof-of-concept study

Authors: Rit Apinyankul, Kritsada Siriwattanasit, Kakanand Srungboonmee, Witchaporn Witayakom, Weerachai Kosuwon

Published in: BMC Musculoskeletal Disorders | Issue 1/2021

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Abstract

Background

Intra-articular injection in the dry knee joint is technically challenging particularly for the beginners. The aim of this study was to investigate the possible use of the vibration sensor to detect if the needle tip was at the knee intra-articular position by characterizing the frequency component of the vibration signal during empty syringe air injection.

Methods

Two milliliters of air were injected supero-laterally at extra- and intra-articular positions of a cadaveric knee joint, using needles of size 18, 21 and 24 gauge (G). Ultrasonography was used to confirm the positions of needle tip. A piezoelectric accelerometer was mounted medially on the knee joint to collect the vibration signals which were analyzed to characterize the frequency components of the signals during injections.

Results

The vibration frequency band power in the range of 500–1500 Hz was visually observed to potentially localize the needle tip placement during air injection whether they were at the knee extra-articular or intra-articular positions, as demonstrated by the higher band power (over − 40 dB or dB) for all the needle sizes. The differences of frequency band power between extra- and intra-articular positions were 18.1 dB, 26.4 dB and 39.2 dB for the needle size 18G, 21G and 24G respectively. The largest difference in spectral power was found in the smallest needle diameter (24G).

Conclusions

A vibration sensor approach was preliminarily proved to distinguish the intra-articular from extra-articular needle placement in the knee joint. This study demonstrated a possible implementation of an alternative electronic device based on this technique to detect the intra-articular knee injection.
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Metadata
Title
A vibration sensor approach to detect intra-articular needle tip placement in the knee joint: a proof-of-concept study
Authors
Rit Apinyankul
Kritsada Siriwattanasit
Kakanand Srungboonmee
Witchaporn Witayakom
Weerachai Kosuwon
Publication date
01-12-2021
Publisher
BioMed Central
Published in
BMC Musculoskeletal Disorders / Issue 1/2021
Electronic ISSN: 1471-2474
DOI
https://doi.org/10.1186/s12891-021-04836-y

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