Near-Infrared Spectroscopy measurements are reliable for studying patellar bone hemodynamics and affected by venous occlusion, but not by skin compression.

Autor: Ophey MJ; IJsveldFysio - Private Physical Therapy Clinic, Nijmegen, The Netherlands. m.j.ophey@amsterdamumc.nl.; Department of Orthopaedic Surgery and Sports Medicine, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands. m.j.ophey@amsterdamumc.nl.; ESP Science and Education, Vienna, Austria. m.j.ophey@amsterdamumc.nl., Westerweel A; RU - Radboud University, Biomedical Sciences, Nijmegen, The Netherlands., van Oort M; RU - Radboud University, Biomedical Sciences, Nijmegen, The Netherlands., van den Berg R; ESP Science and Education, Vienna, Austria.; FH Burgenland, Physical Therapy Department, University of Applied Science, Pinkafeld, Austria.; AIM - Austrian Institute of Management, Advanced Physiotherapy & Management, Eisenstadt, Austria., Kerkhoffs GMMJ; Department of Orthopaedic Surgery and Sports Medicine, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.; Amsterdam Collaboration On Health & Safety in Sports (ACHSS), IOC Research Center, Amsterdam, The Netherlands.; Academic Center for Evidence-Based Sports Medicine (ACES), Amsterdam, The Netherlands., Tak IJR; ESP Science and Education, Vienna, Austria.; Amsterdam Collaboration On Health & Safety in Sports (ACHSS), IOC Research Center, Amsterdam, The Netherlands.; Academic Center for Evidence-Based Sports Medicine (ACES), Amsterdam, The Netherlands.; Physiotherapy Utrecht Oost - Sports Rehabilitation and Manual Therapy, Utrecht, The Netherlands.
Jazyk: angličtina
Zdroj: Journal of experimental orthopaedics [J Exp Orthop] 2023 Nov 29; Vol. 10 (1), pp. 124. Date of Electronic Publication: 2023 Nov 29.
DOI: 10.1186/s40634-023-00709-6
Abstrakt: Purpose: According to the homeostasis model, patellofemoral pain (PFP) results from disturbed homeostasis due to vascular insufficiency in the anterior knee. Near-Infrared Spectroscopy (NIRS) measures relative changes in concentrations (in µmol/cm 2 ) of (de-)oxygenated hemoglobine (HHb and O 2 Hb). The aims were to: 1) investigate the characteristics of the NIRS signal derived from the patella during experiments affecting hemodynamics in healthy controls, and 2) determine the test-retest reliability of NIRS in positions clinically relevant for PFP patients.
Methods: Two experiments were conducted on 10 healthy controls and analysed using Student's t-test. Reliability (ICC 2,1 ) was evaluated for two activities ('Prolonged Sitting' and 'Stair Descent') in five PFP patients and 15 healthy controls, performed twice within five days.
Results: The NIRS signal (HHb and O 2 Hb) showed a statistically significant increase (p < .001 - .002) on all optodes (30, 35, 40 mm) during 'Venous Occlusion' (M = 1.0 - 2.0), while it showed no statistically significant change (p = .075 - .61) during 'Skin Compression' (M = -0.9 - 0.9) on the 30 and 35 mm optode. Reliability of NIRS (HHb and O 2 Hb) ranged from moderate to almost perfect (ICC 2,1  = .47 - .95) on the 30 mm optode for 'Prolonged Sitting', and from moderate to substantial (ICC 2,1  = .50 - .68) on the 35 mm optode for 'Stair Descent'.
Conclusions: Patella NIRS measurements are affected by venous occlusion, but not by skin compression, and are sufficiently reliable as research application to compare real-time patellar bone hemodynamics. These insights may assist to improve effectiveness of evidence-based treatment strategies for PFP.
Trial Registration: ISRCTN Trial Registration under number: 90377123.
(© 2023. The Author(s).)
Databáze: MEDLINE
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