Tantalum implants may reduce acetabular loosening in periacetabular metastases treatment
Acetabular reconstruction with highly porous tantalum components provided increased durability with fewer complications for patients undergoing total hip arthroplasty for periacetabular metastatic disease, according to published results.
Matthew T. Houdek, MD, and colleagues compared two treatment options for periacetabular metastases: a cemented Harrington-style reconstruction and a highly porous uncemented tantalum acetabular construct.
“In patients with metastatic disease of the acetabulum, both a Harrington and tantalum reconstruction provides an excellent means of pain control and functional improvement,” Houdek told Healio Orthopedics.
Between 2002 and 2015, Houdek and colleagues retrospectively reviewed 115 patients (mean age of 61 years) with an acetabular metastatic defect who underwent THA. Seventy-eight patients had the cemented Harrington technique, while 37 patients had a tantalum acetabular implant.
According to the study, the Harrington-style reconstruction was more likely to require a reoperation, with a 9.6% revision rate compared to a 0% revision rate in the tantalum group.
No significant differences were found in Harris hip score improvement between the groups.
“The results of the current series highlight the reduced incidence of acetabular loosening of the tantalum group over time,” Houdek said. “With advances in medical management, patients with metastatic disease [are] living longer and as such, for patients with a favorable disease prognosis, the use of tantalum implants may reduce acetabular loosening over time,” he added.
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