title: [Device to assess in-socket pressure distribution for partial foot amputation].
abstract: A device for dynamic acquisition and distribution analysis of in-socket pressure for patients with partial foot amputation is presented in this work. By using the developed system, we measured and generated pressure distribution graphs, obtained maximal pressure, and calculated pressure-time integral (PTI) of three subjects with partial foot amputation and of a group of Healthy subjects (Hs) (n = 10). Average maximal pressure in the healthy group was 19.4 ± 4.11 PSI, while for the three amputated patients, this was 27.8 ± 1.38, 17.6 ± 1.15, 29.10 ± 3.9 PSI, respectively. Maximal pressure-time integral for healthy subjects was 11.56 ± 2.83 PSI*s, and for study subjects was 19.54 ± 1.9, 12.35 ± 1.48, and 13.17 ± 1.31 PSI*s, respectively. The results of the control group agree with those previously reported in the literature. The pressure distribution pattern showed clear differences between study subjects and those of the control group; these graphs allowed us to identify the pressure in regions-of-interest that could be critical, such as surgical scars. The system presented in this work will aid to assess the effectiveness with which prosthetic systems distribute load, given that the formation of ulcers is highly linked to the pressure exercised at the point of contact; in addition, these results will help to investigate the comfort perception of the prosthesis, a factor directly influenced by the stump's pressure distribution.
authors.affiliation: Laboratorio de Ortesis y Prótesis. Instituto Nacional de Rehabilitación.
authors.forename: Michelín
authors.initials: M
authors.lastname: Alvarez-Camacho
authors.forename: José Luis
authors.initials: JL
authors.lastname: Urrusti
authors.forename: María Del Carmen
authors.initials: Mdel C
authors.lastname: Acero
authors.forename: Carlos
authors.initials: C
authors.lastname: Galván Duque-Gastélum
authors.forename: Gerardo
authors.initials: G
authors.lastname: Rodríguez-Reyes
authors.forename: Felipe
authors.initials: F
authors.lastname: Mendoza-Cruz
mesh_terms: D000328:Adult; D000671:Amputation, Surgical; D016022:Case-Control Studies; D004867:Equipment Design; D005260:Female; D005528:Foot; D016523:Foot Ulcer / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011312:Pressure; D003668:Pressure Ulcer / Q000209:etiology; D011474:Prosthesis Design; D055815:Young Adult