%0 Journal Article %1 Hafner2007 %A Hafner, Brian J %A Willingham, Laura L %A Buell, Noelle C %A Allyn, Katheryn J %A Smith, Douglas G %D 2007 %J Arch Phys Med Rehabil %K ActivitiesofDailyLiving Adult Aged Amputees rehabilitation ArtificialLimbs Cognition physiology Female Humans KneeProsthesis Male Microcomputers MiddleAged PatientSatisfaction ProsthesisDesign Questionnaires Walking %N 2 %P 207--217 %R 10.1016/j.apmr.2006.10.030 %T Evaluation of function, performance, and preference as transfemoral amputees transition from mechanical to microprocessor control of the prosthetic knee. %U http://dx.doi.org/10.1016/j.apmr.2006.10.030 %V 88 %X OBJECTIVE: To evaluate differences in function, performance, and preference between mechanical and microprocessor prosthetic knee control technologies. DESIGN: A-B-A-B reversal design. SETTING: Home, community, and laboratory environments. PARTICIPANTS: Twenty-one unilateral, transfemoral amputees. INTERVENTION: Mechanical control prosthetic knee versus microprocessor control prosthetic knee (Otto Bock C-Leg). MAIN OUTCOME MEASURES: Stair rating, hill rating and time, obstacle course time, divided attention task accuracy and time, Amputee Mobility Predictor score, step activity, Prosthesis Evaluation Questionnaire score, Medical Outcomes Study 36-Item Short-Form Health Survey score, self-reported frequency of stumbles and falls, and self-reported concentration required for ambulation. RESULTS: Stair descent score, hill descent time, and hill sound-side step length showed significant (P<.01) improvement with the C-Leg. Users reported a significant (P<.05) decrease in frequency of stumbles and falls, frustration with falling, and difficulty in multitasking while using the microprocessor knee. Subject satisfaction with the C-Leg was significantly (P<.001) greater than the mechanical control prosthesis. CONCLUSIONS: The study population showed improved performance when negotiating stairs and hills, reduced frequency of stumbling and falling, and a preference for the microprocessor control C-Leg as compared with the mechanical control prosthetic knee.

@article{Hafner2007, abstract = {OBJECTIVE: To evaluate differences in function, performance, and preference between mechanical and microprocessor prosthetic knee control technologies. DESIGN: A-B-A-B reversal design. SETTING: Home, community, and laboratory environments. PARTICIPANTS: Twenty-one unilateral, transfemoral amputees. INTERVENTION: Mechanical control prosthetic knee versus microprocessor control prosthetic knee (Otto Bock C-Leg). MAIN OUTCOME MEASURES: Stair rating, hill rating and time, obstacle course time, divided attention task accuracy and time, Amputee Mobility Predictor score, step activity, Prosthesis Evaluation Questionnaire score, Medical Outcomes Study 36-Item Short-Form Health Survey score, self-reported frequency of stumbles and falls, and self-reported concentration required for ambulation. RESULTS: Stair descent score, hill descent time, and hill sound-side step length showed significant (P<.01) improvement with the C-Leg. Users reported a significant (P<.05) decrease in frequency of stumbles and falls, frustration with falling, and difficulty in multitasking while using the microprocessor knee. Subject satisfaction with the C-Leg was significantly (P<.001) greater than the mechanical control prosthesis. CONCLUSIONS: The study population showed improved performance when negotiating stairs and hills, reduced frequency of stumbling and falling, and a preference for the microprocessor control C-Leg as compared with the mechanical control prosthetic knee.}, added-at = {2012-01-13T14:17:44.000+0100}, author = {Hafner, Brian J and Willingham, Laura L and Buell, Noelle C and Allyn, Katheryn J and Smith, Douglas G}, biburl = {https://www.bibsonomy.org/bibtex/24e574d69e17e934d6e166ef6d510eb8d/bunke}, doi = {10.1016/j.apmr.2006.10.030}, file = {:_BIBUS_hafner_2007.pdf:PDF}, groups = {public}, institution = {Prosthetics Research Study, Seattle, WA 98104, USA. brian.hafner@prs-research.org}, interhash = {b8ef7977e0b26aba975135548f2ab450}, intrahash = {4e574d69e17e934d6e166ef6d510eb8d}, journal = {Arch Phys Med Rehabil}, keywords = {ActivitiesofDailyLiving Adult Aged Amputees rehabilitation ArtificialLimbs Cognition physiology Female Humans KneeProsthesis Male Microcomputers MiddleAged PatientSatisfaction ProsthesisDesign Questionnaires Walking}, month = Feb, number = 2, pages = {207--217}, pii = {S0003-9993(06)01480-8}, pmid = {17270519}, timestamp = {2012-01-13T15:51:58.000+0100}, title = {Evaluation of function, performance, and preference as transfemoral amputees transition from mechanical to microprocessor control of the prosthetic knee.}, url = {http://dx.doi.org/10.1016/j.apmr.2006.10.030}, username = {bunke}, volume = 88, year = 2007 }