The Turkish Version of the Late Life Function and Disability Instrument

The Turkish Version of the Late Life Function and Disability Instrument in Geriatric Individuals With Gonarthrosis: A Validity and Reliability Study

The aim of this study is to investigate the Turkish validity and reliability of the Late Life Function and Disability Instrument (LLFDI) and to provide a measurement tool for researchers who wish to work in this field within the Turkish literature.

Short Physical Performance Battery (SPPB), Timed Up and Go Test (TUG), Functional Independence Measure (FIM), and Barthel Index of Activities of Daily Living (MBI), among others. However, these tests were designed without a clear theoretical or conceptual framework, and their utility and applicability are limited by the physical and cognitive condition of the individuals being assessed. There is a need for practical, adequate, tolerable, and reliable tests that provide consistent results and allow for a comprehensive evaluation of functional status and the effects of treatment.

Considering the existing tests, the Late Life Function and Disability Instrument (LLFDI) was developed by professors in the Department of Physical Therapy at Boston University to assess meaningful changes in both function and disability categories. The LLFDI has been translated into Hebrew, Swedish, French, Korean, Spanish, Canadian Portuguese, and Brazilian Portuguese, with its reliability and validity confirmed. This instrument is widely used in many countries worldwide.

However, there is currently no study on the Turkish version, validity, and reliability of the Late Life Function and Disability Instrument (LLFDI).

The aim of this study is to investigate the validity and reliability of the Turkish version of the Late Life Function and Disability Instrument (LLFDI) and to provide a measurement tool for researchers in this field to be used in the Turkish literature.

Inclusion Criteria:

• over 65 years old,
• being willing and volunteer to participate in the study,
• having reading and writing skills,
• being able to read and write in Turkish,
• having a diagnosis of gonarthrosis, and
• scoring above 20 points on the Mini-Mental Test.

Exclusion Criteria:

• Having a neurological problem