論文

国際誌
2022年4月16日

Patellar dislocation following distal femoral replacement after extra-articular knee resection for bone sarcoma: A case report.

World journal of clinical cases
  • Yuta Kubota
  • ,
  • Kazuhiro Tanaka
  • ,
  • Masashi Hirakawa
  • ,
  • Tatsuya Iwasaki
  • ,
  • Masanori Kawano
  • ,
  • Ichiro Itonaga
  • ,
  • Hiroshi Tsumura

10
11
開始ページ
3561
終了ページ
3572
記述言語
英語
掲載種別
DOI
10.12998/wjcc.v10.i11.3561

BACKGROUND: For the treatment of bone sarcoma in the distal femur, wide-margin resection and knee reconstruction with tumor endoprosthesis are standard therapies. Extra-articular knee resection is required in cases of tumor invasion of the knee joint; however, the incidence of complications, such as aseptic loosening, prosthesis infection, and implant failure, is higher than that following intra-articular knee resection. To the best of our knowledge, there are three reports of patellar dislocations after replacement of a tumor endoprosthesis. CASE SUMMARY: A 36-year-old man with no significant past medical history was admitted to our institution with continuous pain in his left knee for 4 mo. An open biopsy was performed, and the patient was diagnosed with a left distal femoral malignant bone tumor. Extra-articular knee resection and knee reconstruction with a tumor endoprosthesis were performed. Although the alignment of the tumor prosthesis was acceptable, knee instability was noticed postoperatively. The axial radiographic view of the patellar and computed tomography showed lateral patellar dislocation at 4 wk postoperatively. The patient had to undergo a lateral release and proximal realignment. He could perform his daily activities at 9 mo postoperatively. Radiography revealed no patellar re-dislocation. CONCLUSION: Proximal realignment may be considered during primary surgery if there is an imbalance in the forces controlling the patellar tracking.

リンク情報
DOI
https://doi.org/10.12998/wjcc.v10.i11.3561
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/35611187
PubMed Central
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9048549
ID情報
  • DOI : 10.12998/wjcc.v10.i11.3561
  • PubMed ID : 35611187
  • PubMed Central 記事ID : PMC9048549

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