Osteoblastoma of the spine.

A retrograde analysis of 64 spinal osteoblastomas treated by surgery during the period 1963 - 2005 has been made. Spinal osteoblastomas were presented in 36% of all skeletal localizations. There were 44 male and 20 female patients.

[Treatment of occipitocervical instability by SUMMIT].

The occipitocervical junction with its complex anatomy and biomechanics represents unique anatomical structure difficult for operative treatment. Biomechanics forces in this region need to be resisted with rigid metallic construction to facilitate bone fusion. Surgeon must be careful about close relations of the bone, vascular and neurologic structures and must have good skills and knowledge to avoid serious complications during operations.

Low back pain--differential diagnosis, prognosis and treatment.

From January 2002 to February 2003, 137 patients complaining of low back pain were treated at the Institute for Orthopedic Surgery "Banjica", Belgrade, Serbia. There were 89 male and 48 female patients aged 13 to 77, mean age 42.2.

[Non-specific sacroiliitis].

We present retrospectively five cases of non-specific sacroileitis which were established and treated in Special Orthopaedic Hospital Banjica Belgrade in the period of 12 years, from 1982 to 1994. Patients have been from 17 to 27 years of age. All of them had been treated initially in other institutions under different diagnosis: specific sacroileitis, specific coxitis, specific spondylitis, abscess of gluteal region and discarthrosis and lumboishialgia.