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. 2023 Apr;30(3):281-297.
doi: 10.1080/10749357.2022.2026563. Epub 2022 Feb 1.

Lateropulsion with active pushing in stroke patients: its link with lesion location and the perception of verticality. A systematic review

Charlotte van der Waal  1 , Elissa Embrechts  1 , Renata Loureiro-Chaves  1 , Nick Gebruers  1 , Steven Truijen  1 , Wim Saeys  1   2
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Lateropulsion with active pushing in stroke patients: its link with lesion location and the perception of verticality. A systematic review

Charlotte van der Waal et al. Top Stroke Rehabil. 2023 Apr.

Abstract

Background: Lateropulsion with active Pushing (LwP) is characterized by impairments in postural control. Previous research suggests an association between LwP, lesion location and verticality misperception. This first-ever systematic review evaluates the association between LwP, lesion location and the perception of verticality (PROSPERO: CRD42020159248).

Methods: PubMed, Web of Science, REHABDATA, Embase, Cochrane Library and PEDro were systematically searched on December 16, 2021. Studies were included when examining lesion location or perception of verticality (Subjective Haptic, Visual or Postural Vertical) in supratentorial stroke patients showing LwP. Two reviewers independently screened and assessed risk of bias using the Newcastle Ottawa Scale. Data were qualitatively analyzed and extracted.

Results: Nineteen studies were included, examining a total of 340 LwP patients. Lesions in: the thalamus, internal capsule, inferior parietal lobule at the junction of the postcentral gyrus, the posterior insula and the superior temporal gyrus, were associated with LwP. Whereas all studies examining the Subjective Postural and Haptic Vertical (haptic only examined once) reported a significant increased deviation in LwP patients, inconsistent results were found for the Subjective Visual Vertical. Furthermore, the Subjective Visual and Postural Vertical showed inconsistent results for magnitude, direction and variability of this deviation.

Discussion: A complex brain network, rather than only one brain region, seems responsible for body control with respect to gravity. A disruption within this network might lead to a bias in the construction of a correct internal reference frame, crucial for perceiving verticality. There was an association of LwP with verticality misperception in all three modalities.

Keywords: Stroke; lateropulsion; lesion location; perception of verticality; postural control; pushing behavior.

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