Assessment of Strength, Balance, and Function in Above-Knee Amputees in Relation to Residual Limb Length

The goal of this observational study is to learn how muscle strength, balance, and functional ability are affected in people with above-knee (transfemoral) amputations. The main questions it aims to answer are: How does the length of the lost part of the leg, compared to the intact leg, affect muscle strength, balance, and functional capacity? Is muscle strength at specific lower limb joints related to balance and performance ? Participants will: Have muscle strength measured at all intact lower limb joints using an isokinetic dynamometer Complete balance assessments using force platform technology that measures weight distribution and evaluates both static and dynamic balance Perform a six-minute walk test to evaluate endurance and functional capacity The study will help improve understanding of how limb length and joint-specific muscle strength impact mobility, supporting the development of better rehabilitation programs for amputees.

Inclusion Criteria: Individuals will be included in the study if they: Are between 18 and 50 years of age Are literate Have unilateral transfemoral amputation Have no cardiovascular, orthopedic, cognitive, or neurological conditions that could negatively affect balance, gait, or muscle strength Are able to ambulate independently with a prosthesis Have been walking for at least 6 months Voluntarily agree to participate in the study Exclusion Criteria: Participants will be excluded from the study if: They develop complications such as pain (rated 3 or higher on the Visual Analog Scale) or stump irritation during the course of the study Their residual limb length is less than 25 cm from the greater trochanter, which exceeds the limitations of the isokinetic dynamometer attachments used in the study They voluntarily withdraw from the study - in such cases, their data will be removed from the records