Physical signs in lumbar disc hernia

Area of Science:

• Neurosurgery
• Orthopedics
• Spinal Surgery

Background:

• Lumbar disc herniation is a common condition requiring surgical intervention.
• Accurate pre-operative assessment of hernia degree is crucial for surgical planning and predicting outcomes.
• Existing diagnostic methods may not always correlate with intraoperative findings.

Purpose of the Study:

• To determine if specific physical examination signs can predict the degree of lumbar disc herniation.
• To evaluate the diagnostic value of physical signs in differentiating between contained and uncontained disc herniations.
• To assess the ability of physical signs to predict annulus fibrosus integrity.

Main Methods:

• Prospective study of 163 patients undergoing surgery for suspected lumbar disc herniation.
• Stepwise discriminant analysis applied to physical examination findings.
• Correlation of physical signs with intraoperative findings regarding hernia degree and annulus status.

Main Results:

• Lumbar range of motion and crossed straight leg raise (SLR) test were the only significant physical signs.
• These signs correctly classified 74% of uncontained and 68% of contained hernias.
• Lumbar range of motion and crossed SLR predicted annulus rupture with 71% accuracy and intact annuli with 80% accuracy.

Conclusions:

• Lumbar range of motion and crossed SLR are valuable physical signs for predicting lumbar disc hernia severity.
• These physical findings are critical for surgical decision-making and prognostic assessment.
• Neurologic signs have limited value for predicting hernia degree but are important for differential diagnosis.