Overview
Hand-arm vibration syndrome (HAVS) is a debilitating condition caused by prolonged exposure to vibrating hand-held tools, characterized by vascular, neurological, and musculoskeletal impairments 1.Diagnosis
Key Diagnostic Criteria: Vascular symptoms (blanching, cold sensitivity), neurological symptoms (numbness, tingling), and musculoskeletal symptoms (pain, reduced grip strength) 1.
Recommended Tests:
- Quantitative Sensory Testing (QST): Particularly vibration detection threshold, thermal and mechanical detection/pain thresholds 2.
- Electrophysiology: Median nerve neurography for motor and sensory function 2.
- Cold Provocation Tests: Useful for assessing vascular component 3.
Grading System: Updated staging system retains vascular and neurological components, excluding ambiguous descriptors and tests lacking robust methodology 1.Management
First-Line Treatments:
- Removal from Exposure: Immediate cessation of exposure to vibrating tools 1.
- Symptomatic Relief: Warmth and protection of hands, ergonomic adjustments 1.
Adjunctive Treatments:
- Physical Therapy: Including exercises to maintain hand function 3.
- Pharmacotherapy: No specific drug classes or doses mentioned in the abstracts 123.Special Populations
Pregnancy: No specific guidance provided in the abstracts 123.
Pediatrics: Not addressed in the provided abstracts 123.
Elderly: No specific considerations noted 123.
Comorbidities: Carpal tunnel syndrome frequency not increased in HAVS patients; other comorbidities not specifically discussed 2.Key Recommendations
Implement health surveillance with objective tests for accurate staging and individual exposure decisions (Evidence: Expert opinion) 3.
Utilize quantitative sensory testing for detecting sensory loss, particularly vibration detection threshold, as it is more sensitive than conventional electrophysiology (Evidence: Moderate) 2.
Remove affected individuals from exposure to vibrating tools as the primary intervention (Evidence: Expert opinion) 1.References
1 Poole CJM, Bovenzi M, Nilsson T, Lawson IJ, House R, Thompson A et al.. International consensus criteria for diagnosing and staging hand-arm vibration syndrome. International archives of occupational and environmental health 2019. link
2 Rolke R, Rolke S, Vogt T, Birklein F, Geber C, Treede RD et al.. Hand-arm vibration syndrome: clinical characteristics, conventional electrophysiology and quantitative sensory testing. Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology 2013. link
3 Lawson IJ, Nevell DA. Review of objective tests for the hand-arm vibration syndrome. Occupational medicine (Oxford, England) 1997. link
4 Wangenheim M, Holzmann P, Svensson LB. Measurement of whole-body vibration by double-pulsed holography. Journal of biomechanics 1984. link90036-8)