Functional impairment in patients with sporadic Inclusion Body Myositis

Can J Neurol Sci. 2014 Mar;41(2):253-9. doi: 10.1017/s0317167100016668.

Abstract

Introduction: We conducted a retrospective chart review of 53 patients diagnosed with sporadic Inclusion Body Myositis (sIBM) who have been followed at the McMaster Neuromuscular Clinic since 1996.

Objectives: We reviewed patient medical histories in order to compare our findings with similar cohorts, and analyzed quantitative strength data to determine functionality in guiding decisions related to gait assistive devices.

Methods: Patient information was acquired through retrospective clinic chart review.

Results: Our study found knee extension strength decreased significantly as patients transitioned to using more supportive gait assistive devices (P < 0.05). A decline to below 30 Nm was particularly indicative of the need for a preliminary device (i.e. cane)(P < 0.05). Falls and fear of falling poses a significant threat to patient physical well-being. The prevalence of dysphagia increased as patients required more supportive gait devices, and finally a significant negative correlation was found between time after onset and creatine kinase (CK) levels (P < 0.01).

Conclusion: This study supports that knee extension strength may be a useful tool in advising patients concerning ambulatory assistance. Further investigations concerning gait assistive device use and patient history of falling would be beneficial in preventing future falls and improving long-term patient outcomes.

MeSH terms

  • Canes / statistics & numerical data
  • Cohort Studies
  • Creatine Kinase / blood
  • Creatinine / blood
  • Deglutition Disorders / etiology
  • Deglutition Disorders / physiopathology*
  • Dependent Ambulation*
  • Female
  • Foot Orthoses / statistics & numerical data
  • Hand Strength
  • Humans
  • Linear Models
  • Male
  • Middle Aged
  • Muscle Strength*
  • Myositis, Inclusion Body / complications
  • Myositis, Inclusion Body / physiopathology*
  • Orthopedic Equipment / statistics & numerical data*
  • Retrospective Studies
  • Walkers / statistics & numerical data
  • Wheelchairs / statistics & numerical data*

Substances

  • Creatinine
  • Creatine Kinase