Neuromuscular adaptations after osseointegration of a bone-anchored prosthesis in a unilateral transfemoral amputee - a case study.

Autor:	Krauskopf T; Laboratory for Biomedical Microtechnology, Department of Microsystems Engineering, University of Freiburg, Freiburg, Germany.; BrainLinks-BrainTools Center, University of Freiburg, Freiburg, Freiburg, Germany., Lauck T; Laboratory for Biomedical Microtechnology, Department of Microsystems Engineering, University of Freiburg, Freiburg, Germany., Meyer B; Laboratory for Biomedical Microtechnology, Department of Microsystems Engineering, University of Freiburg, Freiburg, Germany., Klein L; Department of Orthopaedics and Trauma Surgery, Medical Center, University of Freiburg, Freiburg, Germany., Mueller M; Sanitätshaus Pfänder, Freiburg, Germany., Kubosch J; Department of Orthopaedics and Trauma Surgery, Medical Center, University of Freiburg, Freiburg, Germany., Herget G; Department of Orthopaedics and Trauma Surgery, Medical Center, University of Freiburg, Freiburg, Germany., von Tscharner V; Human Performance Laboratory, University of Calgary, Calgary, Canada., Ernst J; Department of Trauma Surgery, Hannover Medical School, Hannover, Germany.; Department of Trauma Surgery, Orthopedics and Plastic Surgery, University Medical Center Goettingen, Göttingen, Germany., Stieglitz T; Laboratory for Biomedical Microtechnology, Department of Microsystems Engineering, University of Freiburg, Freiburg, Germany.; BrainLinks-BrainTools Center, University of Freiburg, Freiburg, Freiburg, Germany.; Bernstein Center Freiburg, University of Freiburg, Freiburg, Germany., Pasluosta C; Laboratory for Biomedical Microtechnology, Department of Microsystems Engineering, University of Freiburg, Freiburg, Germany.; BrainLinks-BrainTools Center, University of Freiburg, Freiburg, Freiburg, Germany.
Jazyk:	angličtina
Zdroj:	Annals of medicine [Ann Med] 2023; Vol. 55 (2), pp. 2255206.
DOI:	10.1080/07853890.2023.2255206
Abstrakt:	Purpose: Many individuals with a lower limb amputation experience problems with the fitting of the socket of their prosthesis, leading to dissatisfaction or device rejection. Osseointegration (OI)- the implantation of a shaft directly interfacing with the remaining bone- is an alternative for these patients. In this observational study, we investigated how bone anchoring influences neuromuscular parameters during balance control in a patient with a unilateral transfemoral amputation. Material and Methods: Center of pressure (CoP) and electromyography (EMG) signals from muscles controlling the hip and the ankle of the intact leg were recorded during quiet standing six months before and one and a half years after this patient underwent an OI surgery. Results were compared to a control group of nine able-bodied individuals. Results: Muscle co-activation and EMG intensity decreased after bone anchoring, approaching the levels of able-bodied individuals. Muscle co-activation controlling the ankle decreased in the high-frequency range, and the EMG intensity spectrum decreased in the lower-frequency range for all muscles when vision was allowed. With eyes closed, the ankle extensor muscle showed an increased EMG intensity in the high-frequency range post-surgery. CoP length increased in the mediolateral direction of the amputated leg. Conclusions: These findings point to shifts in the patient's neuromuscular profile towards the one of able-bodied individuals.
Databáze:	MEDLINE
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