They further used the Toronto Clinical Scoring System (TCSS) in those with known diabetes and found a prevalence of 24%.31 A more recent study from the Diabetic center in Jaffna was undertaken in 8401 diabetic patients and using the SWM and biothesiometer
, established a DPN prevalence of 34.1%.32 In a study of 597 newly diagnosed diabetic patients in primary care an abnormal NSS or NDS and VPT established a DPN prevalence of 25.1%,33 whilst using the same criteria in 500 diabetic patients from a diabetic clinic in the general hospital of Colombo, the DPN prevalence was found to be 30.6%.34 In a study of 344 patients the prevalence of DPN established using the TCSS was found to be 30.4%.35
The VPT was examined using the biothesiometer
probe (Bio-Thesiometer; Bio-Medical Instruments, Newbury, OH) placed over the dorsum of the hallux.
VPT was measured with a biothesiometer
- Vibrometer-VPT[R] (Diabetic Foot Care, Madras Engineering Service, India) in a standardized fashion by a single observer.
All study recruited patients have been subjected with biothesiometer
vibration assessment and the subjective pain score before and after the electrotherapy.
Vibration perception threshold was measured by the same technician by using a neuro-thesiometer (BioThesiometer
; Bio-Medical Instrument Co., Newbury Ohio) .
was used to determine her vibration perception threshold.
Peripheral neuropathy was assessed by thermal threshold testing for hot and cold in the left foot (Thermal Threshold Tester; Medelec, Old Woking, Surrey, UK), vibration threshold in the left medial malleolus and left great toe (Biothesiometer
; Biomedical Instrument, Newbury, OH), and microfilament test.
Vibration sensory testing was conducted using the Biothesiometer
(Biomedical, Newbury, Ohio).
Therefore, this study was planned to evaluate the usefulness of the above modalities with the standard well validated screening method of measuring vibration perception threshold (VPT) with a biothesiometer
in a population where foot care practices are scantly followed.
We assessed sensory status using a biothesiometer
(Bio-Medical Instrument Company, Newbury, Ohio) and by applying a Semmes-Weinstein 10 g monofilament (Touch-Test Sensory Evaluator, North Coast Medical, Inc, Morgan Hill, California) to the plantar surface of the foot.
Vibration perception threshold (VPT) at the great toes was measured with a Biothesiometer
(Bio-Medical Instrument Company, Newbury, Ohio, USA) .