Two Cases of Polyethylene Granuloma After Distal Femoral Endoprosthesis With All-Polyethylene Tibia.

• 发表时间: Feb 2021
• 来源期刊: Arthroplast Today
• DOI: 10.1016/j.artd.2020.12.017
• PMID: 33553544
• 文章类型: Case Reports
• 作者列表: Park JP,Nooh A,Tayara B,Jung S,Turcotte R

关键词: All-polyethylene tibia; Distal femoral replacement; Orthopedic oncology; Polyethylene granuloma

Abstract

Limited literature exists on complications specific to the all-polyethylene tibial component in distal femoral replacement (DFR). Unlike in primary arthroplasty with polyethylene components, polyethylene granuloma has not been reported in DFR with an all-polyethylene tibia. Here, we report 2 cases of polyethylene granuloma in patients with primary bone sarcoma who underwent DFR with an all-polyethylene tibia. Radiologically, evidence of intraosseous granuloma formation and periprosthetic osteolysis was observed at the anterior tibial metaphysis. Both patients underwent an operative debridement of polyethylene granuloma and necrotic tissues, followed by a revision to a long-stem, cemented metal-backed tibia with impacted allograft to fill the defect. Polyethylene granuloma should be considered a differential diagnosis in the presence of a periprosthetic lytic lesion after DFR with an all-polyethylene tibial component.