Yoonsoo Park

These findings raise the possibility that early osteolysis in patients with this second-generation metal-on-metal hip replacement is associated with abnormalities consistent with delayed-type hypersensitivity to metal. A prospective study in which a large group of patients is evaluated with multiple diagnostic methods is needed in order to establish whether there is a causal relationship between metal hypersensitivity and osteolysis.

The present study suggested that robot-assisted short stem THA could increase the accuracy of stem alignment, improve leg length equality, and help reduce the risk of intraoperative femoral fracture as compared with manual rasping. However, the clinical outcome scores did not differ between the two groups at the time of short-term follow-up. Long-term follow-up is needed to determine whether there will be a long-term clinical relevance of robot-assisted implantation of short femoral stems in THA

Prognostic Level II. See the guidelines for authors for a complete description of levels of evidence.

We present our experience of contemporary cementless total hip arthroplasty (THA) conducted at a single institution to treat advanced avascular necrosis (AVN) in renal transplant patients. Between October 1997 and October 2008, 45 consecutive primary cementless THAs were performed in 30 patients with advanced AVN after renal transplantation. There were 18 males (27 hips) and 12 females (18 hips) (patient group) with an overall mean age 44 years (22 to 68). The clinical and radiographic results w

This study suggests HRA performed for appropriately selected patients with ONFH can show excellent long-term clinical results. Therefore, HRA should remain as one of the treatment options for ONFH, and further development of HRA implants should be continued.