Misgana TemesgenKassahun Anteneh2026-06-222026-06-222024-02-01https://etd.aau.edu.et/handle/123456789/8333Introduction: Accurate preoperative measurement of femoral nail length is crucial in orthopedic trauma surgery to avoid complications and reduce operative time. Various anthropometric methods have been used to estimate femoral length, but these typically require intact contralateral femurs, which is problematic in cases of bilateral fractures or deformities. Recently, forearm plus little finger length (O-FT) has been proposed as an alternative measurement, though its applicability across different populations, including Ethiopia, remains underexplored. Methods: This descriptive cross-sectional study was conducted at Tikur Anbessa Specialized Hospital in Addis Ababa, Ethiopia, from June to September 2024, involving 151 adult volunteers without prior musculoskeletal deformities or trauma. The O-FT and the distance from the greater trochanter to the superior pole of the patella (GT-SP) were independently measured by two observers using a tape measure. Pearson's correlation, intraclass correlation coefficients (ICC), and multiple linear regression analyses were utilized to assess the correlation and demographic factors’ impact. Results: The average O-FT and GT-SP measurements for Observer 1 were 41.89 cm and 42.32 cm, respectively, while for Observer 2, they were 41.99 cm and 42.49 cm. Both measurements exhibited a strong positive correlation (r = .903 and r = .890, p < .001 for Observers 1 and 2, respectively), with excellent inter-observer reliability (O-FT ICC = 0.960, GT-SP ICC = 0.937). Demographic factors like age, sex, and BMI did not significantly affect the correlation (p > 0.05). Discussion: The findings confirm a strong correlation between O-FT and femoral canal length in the Ethiopian population, aligning with results from other regions. O-FT measurement is a reliable, non-invasive, and cost-effective alternative for preoperative planning of femoral fractures, especially in settings with limited imaging access. Future studies should investigate demographic variability and validate these findings in larger, more diverse populations.enFemurnaillengtholecranon to 5th fingertipcorrelationThesis