IB Lab FROG

Radiological Foot Measurements

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Problems

Accurate identification and classification of foot deformities are vital for determining appropriate treatments, but inconsistencies in measurement methods can hinder reliability [1]. These inconsistencies result from both inter- and intra-reader variability [2], as well as inexperience among junior readers [3]. Automated, standardized foot geometry measurements could address these challenges, reducing radiology workload and improving treatment accuracy.

Non-standardized

Expertise needed

Time-consuming

Solutions

IB Lab FROG™ is a certified medical software device automating foot X-ray measurements, providing consistent, repeatable measurements of critical foot angles that match expert standards. By significantly enhancing the reliability of foot assessments, it reduces manual workload and improves diagnostic precision, ensuring standardized documentation without the need for time-consuming manual drawing. The software streamlines the assessment process, supports efficiency, and indirectly benefits the radiological workflow, while providing additional expert insights with minimal resources. It also reduces intra-rater variability, leading to more consistent radiological assessments.

Workflow efficiency

Saves time and leads to higher inter-reader agreement

Repeatable measurements

IB Lab FROG is 100% repeatable and reproducible on the same image

Automated expert read

Without additional personnel effort

70

%

The prevalence of foot pathologies is 61%-79% and generally increases with age [5]

6

%

Up to 6° differences between human readers for Hallux Valgus angle measurement [2]

100

%

IB Lab FROG is 100% repeatable and reproducible on the same image

Product description

IB Lab FROG™ is a certified AI tool for expert level foot geometry assessment from weight bearing foot X-rays, aiding in patient diagnosis and treatment decisions.

Dorsal-Plantar Report

Measurements on the dorsal-plantar (AP/PA) view:

  • Hallux Valgus Angle
  • Intermetatarsal Angle
  • Distal Metatarsal Articular Angle
  • Talocalcaneal Angle
  • Forefoot Adductus Angle
  • First-fifth Intermetatarsal Angle
  • Fourth-fifth Intermetatarsal Angle
  • Fifth Metatarsophalangeal Angle
  • Osseous Foot Width

Lateral Report

Measurements on the lateral view:

  • Calcaneal Inclination Angle
  • Medial Longitudinal Arch of the Foot (Djian-Annonier’s method)
  • Meary’s Angle (Lateral talus first metatarsal angle)
  • Lateral Talus Calcaneal Angle
  • Talar Declination Angle
  • First Metatarsal Declination Angle
  • Cuboid Height
  • Length of the Sagittal 1a Ray

Benefits

5 Use Cases

17 Measurements

Normrange Visualization

Intended use

IB Lab FROG is a fully-automated radiological image processing software device intended to aid medical professionals in the measurement of anatomical parameters relevant for foot geometry assessment on plain foot radiographs. It should not be used in-lieu of full patient evaluation or solely relied upon to make or confirm a diagnosis. The intended user of IB Lab FROG is a healthcare professional trained in radiology. The usage of IB Lab FROG is limited to dorsal-plantar forefoot and foot radiographs, as well as lateral foot radiographs of individuals aged 18 years and above.

References
  1. C. Carrara, P. Caravaggi, C. Belvedere, and A. Leardini, “Radiographic angular measurements of the foot and ankle in weight-bearing: A literature review.,” Foot Ankle Surg. Off. J. Eur. Soc. Foot Ankle Surg., vol. 26, no. 5, pp. 509–517, Jul. 2020, doi: 10.1016/j.fas.2019.07.008.
  2. C. L. Saltzman et al., “Reliability of standard foot radiographic measurements.,” Foot Ankle Int., vol. 15, no. 12, pp. 661–665, Dec. 1994, doi: 10.1177/107110079401501206.
  3. S. M. Ryu et al., “Automated diagnosis of flatfoot using cascaded convolutional neural network for angle measurements in weight-bearing lateral radiographs.,” Eur. Radiol., vol. 33, no. 7, pp. 4822–4832, Jul. 2023, doi: 10.1007/s00330-023-09442-1.
  4. A. J. Meyr et al., “The American College of Foot and Ankle Surgeons® Clinical Consensus Statement: Hallux Valgus.,” J. Foot Ankle Surg. Off. Publ. Am. Coll. Foot Ankle Surg., vol. 61, no. 2, pp. 369–383, Apr. 2022, doi: 10.1053/j.jfas.2021.08.011.
  5. López-López, D., Pérez-Ríos, M., Ruano-Ravina, A., Losa-Iglesias, M. E., Becerro-de-Bengoa-Vallejo, R., Romero-Morales, C., ... & Navarro-Flores, E. (2021). Impact of quality of life related to foot problems: A case–control study. Scientific Reports, 11(1), 14515.
  6. Perera, A. M., Mason, L., & Stephens, M. M. (2011). The pathogenesis of hallux valgus. JBJS, 93(17), 1650-1661.
  7. Burton, Alex, Michael C. Aynardi, and Umur Aydogan. "Demographic distribution of foot and ankle surgeries among orthopaedic surgeons and podiatrists: A 10-year database retrospective study." Foot & Ankle Specialist 14.3 (2021): 206-212.

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