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Resting TcPO2 levels decrease during liner wear in persons with a transtibial amputation

Berli, Martin C. ; Jundt-Ecker, Michèle ; Meier, Margrit R. ; Hofer, Michael ; Schöni, Madlaina ; Götschi, Tobias ; Uçkay, Ilker ; Böni, Thomas ; Waibel, Felix W. A. Moerman, Kevin Mattheus

PloS one, 2020-09, Vol.15 (9), p.e0239930-e0239930 [Periódico revisado por pares]

San Francisco, CA USA: Public Library of Science

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  • Título:
    Resting TcPO2 levels decrease during liner wear in persons with a transtibial amputation
  • Autor: Berli, Martin C. ; Jundt-Ecker, Michèle ; Meier, Margrit R. ; Hofer, Michael ; Schöni, Madlaina ; Götschi, Tobias ; Uçkay, Ilker ; Böni, Thomas ; Waibel, Felix W. A.
  • Moerman, Kevin Mattheus
  • Assuntos: Analysis ; Artificial legs ; Biology and Life Sciences ; Biomechanics ; Blood gas analysis ; Blood gases ; Engineering and Technology ; Medical research ; Medicine and Health Sciences ; Medicine, Experimental ; Physical Sciences ; Physiological aspects ; Properties
  • É parte de: PloS one, 2020-09, Vol.15 (9), p.e0239930-e0239930
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
    Competing Interests: ConReha GmbH provides research support within the field of Clinical Sciences. The company provided support in form of salary for the author MRM. Neither the author nor the company have commercial interests, patents, products in development or marketed in relation to the topic of the study. The commercial affiliation of the author does not alter our adherence to PLOS ONE policies on sharing data and materials.
  • Descrição: Background In our clinic, a substantial number of patients present with transtibial residual limb pain of no specific somatic origin. Silicone liner induced tissue compression may reduce blood flow, possibly causing residual limb pain. Thus, as a first step we investigated if the liner itself has an effect on transcutaneous oxygen pressure (TcPO2). Methods Persons with unilateral transtibial amputation and residual limb pain of unknown origin were included. Medical history, including residual limb pain, was recorded, and the SF-36 administered. Resting TcPO2 levels were measured in the supine position and without a liner at 0, 10, 20 and 30 minutes using two sensors: one placed in the Transverse plane over the tip of the Tibia End (= TTE), the other placed in the Sagittal plane, distally over the Peroneal Compartment (= SPC). Measurements were repeated with specially prepared liners avoiding additional pressure due to sensor placement. Statistical analyses were performed using SPSS. Results Twenty persons (9 women, 11 men) with a mean age of 68.65 years (range 47-86 years) participated. The transtibial amputation occurred on average 43 months prior to study entry (range 3-119 months). With liner wear, both sensors measured TcPO2 levels that were significantly lower than those measured without a liner (TTE: p 0.001; SPC: p = 0.002) after 10, 20 and 30 minutes. No significant differences were found between TcPO2 levels over time between the sensors. There were no significant associations between TcPO2 levels and pain, smoking status, age, duration of daily liner use, mobility level, and revision history. Conclusion Resting TcPO2 levels decreased significantly while wearing a liner alone, without a prosthetic socket. Further studies are required to investigate the effect of liner wear on exercise TcPO2 levels.
  • Editor: San Francisco, CA USA: Public Library of Science
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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