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Evaluation of the psychophysical detection threshold level for vibrotactile and pressure stimulation of prosthetic limbs using bone anchorage or soft tissue support.

Artikel i vetenskaplig tidskrift
Författare R Jacobs
Rickard Brånemark
Kjell Olmarker
Björn Rydevik
D van Steenberghe
Per-Ingvar Brånemark
Publicerad i Prosthetics and orthotics international
Volym 24
Nummer/häfte 2
Sidor 133-42
ISSN 0309-3646
Publiceringsår 2000
Publicerad vid Odontologiska institutionen
Institutionen för de kirurgiska disciplinerna, Avdelningen för ortopedi
Sidor 133-42
Språk en
Länkar www.ncbi.nlm.nih.gov/entrez/query.f...
Ämnesord Adult, Amputation, methods, rehabilitation, Arm, Artificial Limbs, Female, Humans, Leg, Male, Middle Aged, Musculoskeletal Physiological Phenomena, Perception, physiology, Pressure, Prosthesis Design, Prosthesis Fitting, Reference Values, Sensitivity and Specificity, Sensory Thresholds, physiology, Stress, Mechanical, Vibration
Ämneskategorier Biomaterial

Sammanfattning

In the present study the psychophysical detection threshold levels mechanical stimulation of 32 prosthetic limbs were determined. Prosthetic limbs were anchored to the bone by means of an implant (n=17) or supported by a socket enclosing the amputation stump (n=15). Detection threshold levels were assessed for pressure and vibratory stimulation of the prosthesis and the limb at the contralateral side (control). Following vibratory stimulation, thresholds were increased on an average 20% for socket prostheses. but approached those of the control for bone-anchored prostheses. For pressure stimulation, thresholds were increased up to 60% for socket prostheses and 40% for bone-anchored prostheses compared to the control. While bone-anchored prostheses yielded significantly lower threshold levels than socket prostheses, there was no significant difference between both treatments regarding pressure stimulation. Results were applicable to both upper and lower limb amputees. It could be concluded that detection thresholds for pressure and especially vibratory stimulation of prosthetic limbs were generally higher than for control limbs. The outcome was related to the prosthetic limb design with bone-anchored prostheses yielding better perception than socket prostheses.

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