Example Application Areas
Diabetic Foot Ulcers
- An increase in plantar foot temperature can occur up to a week before an ulcer appears
- Indicators include:
- breach of contra-lateral left-right symmetry
- hot spots or areas
- reduced, absent or inverted temperature gradient from medial arch to toes and heel
- After healing of a foot ulcer, the risk of recurrence is high
- For the prevention of a recurrent foot ulcer, home monitoring of foot temperature and other interventions prove to be effective
The Podium thermal scan image shows the asymmetrical temperature distribution between the left and the right foot caused by a hot spot.
At the same time the temperature gradient between the medial arch and the foot periphery towards the toes is inverted.
For more information refer to van Netten, J.J., van Baal, J.G., et al.
- Macro-angiopathy, venous or arterial disease can affect the thermal pattern of the foot
- Extended areas of the foot are less perfused and appear cooler than normal
- Hight thermal asymmetry is often observable between left and right foot
Watch this YouTube video
where Vascular Surgeon Dr. Thomas Reifsnyder discusses symptoms, diagnosis and treatment of severe peripheral arterial disease (PAD).
The video provides insight on how to avoid limb amputations, including leg and foot removal.
The Podium thermal scan image shows the strong asymmetry between the left and the right plantar foot caused by a insufficient perfusion of the right foot.
For more information refer to aan de Stegge, W.B., Mejaiti, N., et al.
- Long-term high glucose levels in people living with diabetes cause a thickening of the basement membrane in the capillary wall
- These changes may lead to occlusive angiopathy and to tissue hypoxia and damage
- Indicators include:
- broken contra-lateral left-right symmetry
- occasional temperture differences between toes 2 to 5
- increased temperature gradient from medial arch to toes
The Podium thermal scan and histogram show typical characteristics of suspected micro-angiopathy.
- The characteristic features of suspected neuropathy are visualised in the Podium images shown
- Typical indicators include:
- inversion of the medial -> toe temperature gradient (i.e. the toes become as warm or warmer than the medial arch)
- loss of contra-lateral symmetry between left and right foot
- extended hot areas with the average foot temperature over 30℃
The underlying concept behind this region-based apprach to temperatrue assessment is explained in a paper by Peregrina-Baretto H. et al.
Case Study Examples
- Female, early 30s
- fracture of left 4th toe (Xray confirmed)
- 4 weeks after injury
- Previous surgery in right foot (3rd toe straightened)
- Female, early 20s
- Suffering from Chilblains
- 1 week before this scan antibiotics prescribed to treat infected area under the right 5th metatasal. Area was then swollen, tender and warm to the touch but improved according to the patient.
- Female, late 70s
- Reported with painful left foot especially 2nd and 3rd toes
- On inspection:
- toes white, signs of Raynauds
- colour returned within 5 minutes after foot elevated
- Male, late 50s
- Presented with strong pain in left foot
- Unprovoked, no injury or over-use reported
- Foot swollen, red and tender
- Medical history and presentation suggest gout attack
Ⓒ 2021 by Thermetrix Ltd.
- Registered Office at Ty Menter, Navigation Park, Suite F12,
- Abercynon, CF45 4SN
- Company Number: 10053017
- Sales Address:
- 3 The Row, Market Street
- Hoylake, Wirral, CH47 3BB