Effectiveness of Inelastic LSO Versus Standard Medical Treatment for Back Pain Associated With Kyphosis

Inclusion Criteria: * Patients with moderate to complete disability (crippled) as defined by a score of 21% to 80% on the baseline evaluation of the Oswestry Back Pain Disability Questionnaire; * Patients diagnosed with kyphosis and have a Cobb angle of at least 55 degrees; * Willing and able to comply with the study procedures and provide written informed consent to participate in the study. Exclusion Criteria: * Patients under the age of 19; * Pregnant patients or patients who are considering future pregnancies; * Patients who were participating in any other investigational device or drug study or whose participation in a previous investigational study within 30 days of study entry may, in the opinion of the clinical investigator, impact analysis of this orthotic; * Patients who, in the clinical judgment of the investigator, are not suitable for this study; Patients who, in the investigators opinion, are mentally or legally incapacitated preventing informed consent or unable to read or understand written material; * Patients who are unable or unwilling to return to the study center for follow-up visits.