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A Comparative Study between Patella Tendon Bearing-Supracondylar (PTB-SC) and Total Surface Bearing (TSB) Socket on Energy Expenditure in Subjects with Transtibial Amputees on Two Surface Walking
Vol 11 , Issue 1 , January - March 2023 | Pages: 4-11 | Research Paper
Received: January 12, 2023 | Revised: February 05, 2023 | Accepted: February 15, 2023 | Published Online: March 15, 2023
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Background: - Amputation is a procedure where a part of the limb is removed through one or more bones. Lower extremity amputation is the most common amputation surgery. Limb amputation can be considered as both life saving and life changing event. As per Census 2011, the population of persons with disabilities in our country is about 2.68 crore which is 2.22% of total population of the country. World Health Organization (WHO) estimated that there are 40 million amputees throughout the developing world. Approximately 200–500 million major amputations are performed each year worldwide. Incidence rate is every year 23,500 amputees are added to the amputee population in India, of which 20,200 are males and 3,300 are females. Material & Methodology: - Thirty adults who had a unilateral transtibial amputation participated in this study. Energy expenditure was measured with a Cosmed K4b2 oxygen analysis telemetry unit (Rome, Italy) as the participants walked over level ground for 30 meters at a self-selected speed. The variables that were analyzed were Tidal Volume, VO2 rate (ml/min), VO2 cost (ml/kg/m), Heart Rate (bpm), and Energy Expenditure per minute (Kcal/min). Results: It is observed that the pre data result of VT, VO2, VCO2, HR, PaO2 and EE was found significant (p<0.05) while O2 cost was non-significant (p>0.05) and post data result shows that VT, VO2, O2 cost, HR, PaO2 and EE found significant (p<0.05) while VCO2 was non-significant (p>0.05) when comparing two prosthetic design variants, that is PTB and TSB socket design on plane surface. This suggests that the change in VCO2 uptake can directly affects the EE/min values and vice versa. It was observed that in pre data result of all outcome parameters were non-significant except HR and post data result found all outcome parameters are non-significant except VO2 and EE when comparing two prosthetic design variants, PTB and TSB socket design on inclined surface. This suggests that the change in VCO2 and VO2 uptake can directly affects the EE/min values and vice versa. Conclusion: This study concluded that the subject (transatibial amputees) with PTB-SC socket spends more energy than subjects with TSB socket. So, this study demonstrated that people with transtibial amputation may be benefited from using prostheses with TSB socket compared with PTB-SC with respect to reduced energy expenditure and functional walking ability.
Keywords
Transtibial amputee; Energy expenditure; TSB and PTB-SC socket design
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