Toxicity and bioactivity of cobalt nanoparticles on the monocytes.

Objective: To explore the toxicity and biological activity of cobalt nanoparticles on the osteoclasts. Analyze the relationship between cobalt nanoparticles and osteolysis.

Methods: Monocyte-macrophages (RAW 264.

Comparison of complications and results of early versus delayed surgery for Gartland type III supracondylar humeral fractures in pediatric patients.

Objective: To investigate the effect of timing of surgery on clinical results and perioperative complications in pediatric patients with Gartland III type supracondylar humeral fractures without neurovascular compromise.

Methods: Eighty-six consecutive children treated surgically at our hospital from April 2005 to June 2007 for displaced supracondylar humeral fractures were reviewed. All these patients were treated by the same group of doctors.

[Surgical treatment for open dislocation of talus].

Objective: To evaluate the clinical effects of surgical treatment for open dislocation of talus.

Methods: From June 2001 to July 2008,the complete data of 11 patients with open dislocations of talus were retrospectively analyzed, including 8 males and 3 females with an average age of 39.5 years (ranged 19 to 52).