Entra

Where our numbers come from.

“Our research” means interviews we ran ourselves.

  1. Our research Entra interviews with amputees, prosthetists, clinicians, health policy experts, podiatrists and prosthetics researchers, 2025–2026
    • 20+ interviews with amputees, prosthetists, clinicians, policy experts and researchers
  2. Our research Conversations with the Amputee Self Help Network Uganda (ASNU) ASNU
    • $300 what ASNU charges for an entire prosthetic leg
  3. Our research Interview with a health policy PhD student working in a prosthetics lab
    • ~80% of U.S. amputations are caused by diabetes
  4. Published Evaluation of the current status of prosthetic rehabilitation services for major limb loss: a descriptive study in Ugandan referral hospitals
    • 186,000 people in Uganda living with a lower-limb amputation (46M × 5% × 81%)
  5. Published Enhancing prosthesis fitting: a protocol for acquiring thermal and biomechanical data from lower-limb amputees JoVE
    • 25–57% of prosthesis users abandon their device, citing discomfort, friction and poor socket fit
  6. Published Penta Prosthetics Penta Prosthetics
    • 90% of the world's 65 million+ amputees cannot access or afford a prosthesis
  7. Published Lower extremity amputation UpToDate
    • 51% of patients were not walking 10 months after amputation; only 32% used a prosthesis
  8. Published Annual cost of replacement parts and service for socket prostheses Bone & Joint Open
    • $3,850 average yearly cost of replacement parts and service for a socket prosthesis
  9. Published 5.6 million+ Americans are living with limb loss and limb difference Amputee Coalition
    • 5.6 million Americans are living with limb loss or limb difference
  10. Published The LIM Innovations Infinite Socket white paper LIM Innovations, 2017
    • $30,000+ what multiple replacement sockets a year can cost the many users who need them