Vibration induced white foot

NewsBot · Aug 5, 2010

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Vibration-white foot: a case report.
Thompson AM, House R, Krajnak K, Eger T.
Occup Med (Lond). 2010 Aug 3. [Epub ahead of print]

BACKGROUND: Hand-arm vibration syndrome (HAVS) refers to the neurological, vascular and musculoskeletal problems that may arise due to exposure to segmental vibration to the hands. An analogous syndrome may occur in the lower extremities of workers exposed to foot-transmitted vibration.

AIMS: This report describes the case of a worker with a history of foot-transmitted vibration exposure presenting with cold intolerance in the feet and blanching in the toes. Case report A 54-year-old miner presented with a chief complaint of blanching and pain in his toes. The worker had a history of foot-transmitted vibration exposure over his 18 year career as a miner, primarily from the operation of vehicle-mounted bolting machines. Cold provocation digital plethysmography showed cold-induced vasospastic disease in the feet, but not in the hands.

CONCLUSIONS: This case illustrates a condition descriptively termed 'vibration-white foot': a disease analogous to HAVS arising after segmental vibration exposure to the feet. Further research is required to increase awareness of, and direct preventive efforts for, this potentially debilitating condition.
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Admin2 · Aug 5, 2010

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NewsBot · Sep 6, 2013

Vibration induced white-feet: Overview and field study of vibration exposure and reported symptoms in workers.
Eger T, Thompson A, Leduc M, Krajnak K, Goggins K, Godwin A, House R.
Work. 2013 Sep 4

BACKGROUND:
Workers who stand on platforms or equipment that vibrate are exposed to foot-transmitted vibration (FTV). Exposure to FTV can lead to vibration white feet/toes resulting in blanching of the toes, and tingling and numbness in the feet and toes.
OBJECTIVES:
The objectives are 1) to review the current state of knowledge of the health risks associated with foot-transmitted vibration (FTV), and 2) to identify the characteristics of FTV and discuss the associated risk of vibration-induced injury.
PARTICIPANTS:
Workers who operated locomotives (n=3), bolting platforms (n=10), jumbo drills (n=7), raise drilling platforms (n=4), and crushers (n=3), participated.
METHODS:
A tri-axial accelerometer was used to measure FTV in accordance with ISO 2631-1 guidelines. Frequency-weighted root-mean-square acceleration and the dominant frequency are reported. Participants were also asked to report pain/ache/discomfort in the hands and/or feet.
RESULTS:
Reports of pain/discomfort/ache were highest in raise platform workers and jumbo drill operators who were exposed to FTV in the 40 Hz and 28 Hz range respectively. Reports of discomfort/ache/pain were lowest in the locomotive and crusher operators who were exposed to FTV below 10 Hz. These findings are consistent with animal studies that have shown vascular and neural damage in exposed appendages occurs at frequencies above 40 Hz.
CONCLUSIONS:
Operators exposed to FTV at 40 Hz appear to be at greater risk of experiencing vibration induced injury. Future research is required to document the characteristics of FTV and epidemiological evidence is required to link exposure with injury.
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