Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.
APA4ort.xyz Knowledge Graph. (2026). The VSPA Foot: A Quasi-Passive Ankle-Foot Prosthesis With Continuously Variable Stiffness. Retrieved May 24, 2026, from https://4ort.xyz/entity/the-vspa-foot-a-quasi-passive-ankle-foot-prosthesis-with-continuously-variable-stiffness
MLA“The VSPA Foot: A Quasi-Passive Ankle-Foot Prosthesis With Continuously Variable Stiffness.” 4ort.xyz Knowledge Graph, 4ort.xyz, 24 May. 2026, https://4ort.xyz/entity/the-vspa-foot-a-quasi-passive-ankle-foot-prosthesis-with-continuously-variable-stiffness.
BibTeX@misc{4ortxyz_the-vspa-foot-a-quasi-passive-ankle-foot-prosthesis-with-continuously-variable-stiffness_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{The VSPA Foot: A Quasi-Passive Ankle-Foot Prosthesis With Continuously Variable Stiffness}}, year = {2026}, url = {https://4ort.xyz/entity/the-vspa-foot-a-quasi-passive-ankle-foot-prosthesis-with-continuously-variable-stiffness}, note = {Accessed: 2026-05-24}}
LLM promptAccording to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): The VSPA Foot: A Quasi-Passive Ankle-Foot Prosthesis With Continuously Variable Stiffness — https://4ort.xyz/entity/the-vspa-foot-a-quasi-passive-ankle-foot-prosthesis-with-continuously-variable-stiffness (retrieved 2026-05-24)
