A stellar stream remnant of a globular cluster below the metallicity floor.

Stellar ejecta gradually enrich the gas out of which subsequent stars form, making the least chemically enriched stellar systems direct fossils of structures formed in the early Universe. Although a few hundred stars with metal content below 1,000th of the solar iron content are known in the Galaxy, none of them inhabit globular clusters, some of the oldest known stellar structures. These show metal content of at least approximately 0.

A rare case report of Patellar Osteochondroma.

Introduction: Osteochondroma (OC) is the most common benign tumor of the skeleton. However, patellar OC is very rare. Only five case reports have been published yet and only 1 after the year 1972.

Outcome following knee arthroplasty beyond 15 years.

There is a paucity of information detailing functional outcome following total knee arthroplasty for this length of follow-up. We collected data from 187 knees in 150 surviving patients, beyond 15 years from implantation. Survival of the implant was confirmed and a patient administered questionnaire including WOMAC, SF-36 and patient satisfaction was used, data was scrutinised for differences between primary and revision knee surgery.

Low back pain on passive straight leg raising: the anterior theca as a source of pain.

Study Design: A prospective clinical and radiologic investigation of two groups of patients presenting with either acute back pain only or acute leg pain only, yet similar restriction in straight leg raising (SLR).

Objectives: To highlight a group of patients presenting with acute low back pain only, yet a restricted SLR normally associated with leg pain (sciatica) caused by a posterolateral disc prolapse. To determine the anatomic source of the pain in the low back pain only group.

Tibial cyst formation after anterior cruciate ligament reconstruction using a new bioabsorbable screw.

We report a case of tibial cyst formation twelve months after anterior cruciate ligament reconstruction using hamstring graft. A composite bioabsorbable interference screw made of 'beta tricalcium phosphate and poly L-lactide' fixed the graft distally. The patient presented with acute symptoms of pain and swelling over the proximal tibia.