Inter-tester Reliability of Lumbar Lordosis Posture Classification Using a Novel Screening Device

Area of Science:

• Biomechanics
• Orthopedics
• Physical Therapy

Background:

• Lumbar lordosis is a critical component of spinal alignment.
• Accurate assessment of lumbar lordosis is essential for identifying postural abnormalities.
• Existing methods for measuring lumbar lordosis may lack consistent reliability.

Purpose of the Study:

• To evaluate the inter-tester reliability of a novel screening device for assessing lumbar lordosis posture.
• To determine the accuracy of the device in classifying different lumbar spine categories.
• To assess the device's utility in measuring upper and lower regional lumbar lordosis angles.

Main Methods:

• Thirty-three healthy young males participated.
• Two examiners used a novel flexible ruler device to measure lumbar lordosis angles in the standing position.
• Participants were classified into four lumbar spine categories based on posture.

Main Results:

• The overall agreement level between the two examiners was 87.9%.
• A kappa coefficient of 0.79 indicated substantial inter-tester reliability.
• The device demonstrated good reliability in classifying sagittal lumbar posture.

Conclusions:

• The novel screening device exhibits good inter-tester reliability for assessing lumbar lordosis.
• This device can be a valuable tool for healthcare professionals managing sagittal lumbar posture in asymptomatic young adults.
• Further research is recommended to validate these findings in broader populations.