None listed
Conditions
Brief summary
Assessment of gait symmetry is one of the main criteria for assessing the process of improving patients with various musculoskeletal disorders. In the case of patients after transfemoral amputation (TFA), gait parameters are evaluated by referring the obtained amputated data either to the whole limb or to the data of healthy people. Walking patterns in healthy people concerning time, distance, and vertical force are quite symmetrical, deviating in only a small percentage from ideal symmetry. Numerous studies have demonstrated significant asymmetries in unilateral amputee gait. The underlying dissimilarities between prosthetic and intact limbs have not yet been widely examined. To gain more insight into the functionality of asymmetries, we propose a new tool, the symmetry function (SF), to evaluate the symmetry of walking in terms of kinematic and dynamic variables of patients after unilateral transfemoral amputation and to identify areas with the largest side deviations in the movement cycle. An instrumented motion analysis system was used to register the gait of fourteen patients after unilateral trans-femoral amputation. Measurements involved evaluating the time series of gait variables characterizing a range of motion and the time series of the ground reaction force components.
Interventions
The bomechanical study will include unilateral tranfemoral amputation patients (UniTransFemorLimLos), who will constitute Group I. Group II will consist of age-matched healthy volunteers. The methodology and parameters of the biomechanical study will be established according to the literature on biomechanical testing. The study will be performed in a certified Biomechanical Analysis Laboratory (PN-EN ISO 9001:2001) using the BTS Smart-E system (BTS Bioengineering, Milan, Italy), which uses six d
The bomechanical study will include unilateral tranfemoral amputation patients (UniTransFemorLimLos), who will constitute Group I. Group II will consist of age-matched healthy volunteers. The methodology and parameters of the biomechanical study will be established according to the literature on biomechanical testing. The study will be performed in a certified Biomechanical Analysis Laboratory (PN-EN ISO 9001:2001) using the BTS Smart-E system (BTS Bioengineering, Milan, Italy), which uses six digital infrared cameras (1. 1 µm infrared light, 120 frames per second at 768 x 576 px resolution), two AXIS 210A Network Cams operating in the visible range at 20 Hz and two piezoelectric force plates type 9286A (Kistler Instrumente AG, Winterthur) specifically designed for use in gait analysis with a measurement threshold above 250 mN and a range of 0-5 kN for the vertical component. Data were collected via a digital USB/PC input and processed in the BTS Smart Analyser software. A total of 22 photoreflective markers were placed on the subject's body, following the standard procedure for the Davis model. Hip flexion (FL) and extension (EXT) musculoskeletal speed and endurance abilities were measured using a Biodex System 4 Pro device. All measurements were performed in the sagittal plane under isokinetic (60°/s and 120°/s angular velocity) and isometric conditions. The following variables were studied: peak torque for FL and EXT under isometric conditions, peak torque for FL and EXT under isokinetic conditions. The torque ratio FL to EXT (F/E ratio) was calculated for the intact and amputated limb. The test is carried out on a one-off basis. The duration of the test is approximately 1.5 h. During the test subjects will be asked to walk a distance of 6 m several times (5 back and forth) in a prosthesis at a freely chosen gait speed.
Sponsors
Wroclaw Medical University
Eligibility
Sex/Gender
All
Age
18 Years to 70 Years
Healthy volunteers
Yes
Inclusion criteria
Inclusion criteria will include: 1. Loss of lower limb at the level of the thigh. 2. the use of a prosthetic limb in addition to daily living. 3. use of the currently used prosthesis for at least 6 months. 4.The ability to walk a distance of not less than 20 metres without the use of elbow crutches. 5.Congenital lower limb impingement consisting of absence of the knee joint and structures below. 6.Medicare Functional Classification K level 3 or 4. 7.Informed consent for the study. Key inclusion criteria Healthy, age-matched volunteers: Inclusion criteria will include: 1. No history of musculoskeletal or nervous system disorders on the day of the study. 2. absence of cognitive impairment.
Exclusion criteria
The exclusion criteria will be pain in the stump or lower limbs and chronic diseases that could affect the fitness of the musculoskeletal system in terms of satiation: 1. Cancer relapse. 2. Injury to the locomotor system. 3. Exacerbation of thromboembolism (including the antiphospholipid syndrome). 4. Pain in the area of the lumbar spine. 5. Root pain in the course of discopathy. 6. Cognitive dysfunction
Outcome results
None listed