Thumb Amputations Treated With Osseointegrated Percutaneous Prostheses With Up to 25 Years of Follow-up

Journal of the American Academy of Orthopaedic Surgeons. Global Research & Reviews
Yan LiRickard Brånemark

Abstract

Implantation of an osseointegrated percutaneous prosthesis provides a reconstruction alternative for thumb amputation without sacrificing donor tissues. Thirteen thumb amputees received osseointegrated prostheses (1990 to 2014). The treatments were started with custom-designed implants. Since 2005, standardized implant components and structured rehabilitation protocols were introduced. The median follow-up period was 9.5 years. Six patients were lost to follow-up. Seven patients (including all six after the introduction of the standardized protocol) had good osseoperception, grip strength (Jamar) was 28.3 kg on the operated side versus 40.4 kg in the unaffected hand (70%), and key grip strength was 6 versus 9.1 kg. Hand function was 94% of the normal hand. The most common complications were mechanical failures necessitating changes of components (eight times in three patients) and superficial infections (seven times in five patients). Five patients had no complications. The refined implant design and new standardized treatment protocol achieved a 100% cumulative success rate with 9.5 years of follow-up so far. Treatment of thumb amputees using bone-anchored percutaneous prostheses seems to be a safe, durable method with excelle...Continue Reading

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Citations

Jun 13, 2021·Scientific Reports·Sarah HochgeschurzOskar C Aszmann

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Methods Mentioned

BETA
amputation
amputations

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