Standing in Schroth trained position significantly changes Cobb angle and leg length discrepancy: a pilot study

Area of Science:

• Orthopedics
• Radiology
• Physical Therapy

Background:

• The Schroth method is a conservative scoliosis treatment.
• Its effect on radiographic measurements requires clarification.

Purpose of the Study:

• To evaluate if a Schroth trained position influences radiographic Cobb angle assessment compared to a normal standing position.

Main Methods:

• Retrospective review of 10 adolescent idiopathic scoliosis patients undergoing Schroth therapy.
• Paired thoracolumbar spine radiographs were taken in normal and Schroth positions.
• Three pediatric spine surgeons assessed Cobb angle, coronal/shoulder balance, and leg length discrepancy.

Main Results:

• Major Cobb angle was significantly reduced (mean 6°) in the Schroth position (p=0.02).
• Compensatory curve also reduced (mean 5°, p=0.03).
• No significant difference in coronal or shoulder balance; leg length discrepancy increased.

Conclusions:

• The Schroth position alters Cobb angle measurements, potentially affecting treatment decisions.
• Radiograph posture must be standardized for accurate scoliosis assessment and reporting.