Predictors and pathophysiology of axial postural abnormalities in Parkinsonism: a scoping review

Carlo Alberto Artusi, Christian Geroin*, Jorik Nonnekes, Camila Aquino, Divyani Garg, Marian L. Dale, Darbe Schlosser, Yijie Lai, Mohammad Al‐Wardat, Mehri Salari, Robin Wolke, Valery Tsinda Labou, Gabriele Imbalzano, Serena Camozzi, Marcelo Merello, Bastiaan R. Bloem, Tamine Capato, Ruth Djaldetti, Karen Doherty, Alfonso FasanoHouyam Tibar, Leonardo Lopiano, Nils G. Margraf, Caroline Moreau, Yoshikazu Ugawa, Roongroj Bhidayasiri, Michele Tinazzi*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)
65 Downloads (Pure)

Abstract

Background
Postural abnormalities involving the trunk are referred to as axial postural abnormalities and can be observed in over 20% of patients with Parkinson's disease (PD) and in atypical parkinsonism. These symptoms are highly disabling and frequently associated with back pain and a worse quality of life in PD. Despite their frequency, little is known about the pathophysiology of these symptoms and scant data are reported about their clinical predictors, making it difficult to prompt prevention strategies.

Objectives
We conducted a scoping literature review of clinical predictors and pathophysiology of axial postural abnormalities in patients with parkinsonism to identify key concepts, theories and evidence on this topic.

Methods
We applied a systematic approach to identify studies, appraise quality of evidence, summarize main findings, and highlight knowledge gaps.

Results
Ninety-two articles were reviewed: 25% reported on clinical predictors and 75% on pathophysiology. Most studies identified advanced disease stage and greater motor symptoms severity as independent clinical predictors in both PD and multiple system atrophy. Discrepant pathophysiology data suggested different potential central and peripheral pathogenic mechanisms.

Conclusions
The recognition of clinical predictors and pathophysiology of axial postural abnormalities in parkinsonism is far from being elucidated due to literature bias, encompassing different inclusion criteria and measurement tools and heterogeneity of patient samples. Most studies identified advanced disease stage and higher burden of motor symptoms as possible clinical predictors. Pathophysiology data point toward many different (possibly non-mutually exclusive) mechanisms, including dystonia, rigidity, proprioceptive and vestibular impairment, and higher cognitive deficits.

Original languageEnglish
Pages (from-to)1585-1596
Number of pages12
JournalMovement Disorders Clinical Practice
Volume10
Issue number11
Early online date25 Sept 2023
DOIs
Publication statusPublished - 17 Nov 2023

Keywords

  • Antecollis
  • Camptocormia
  • Parkinsonisms
  • Pisa syndrome
  • axial postural abnormalities
  • clinical predictors
  • pathophysiology

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