Diagnosis of and Early Revision Surgery for Biological Fixation Failure Due to Proximal-Distal Mismatch of Proximally Coated Tapered Cementless Stem

Arthroplasty Today

So Kawakita, MD¹  Yasuhiro Homma, MD, PhD²  Tomonori Baba, MD, PhD³  Taiji Watari, MD, PhD³  Kazuo Kaneko, MD, PhD³ 

[1] Department of Orthopaedic Surgery, Juntendo University school of medicine, Tokyo, Japan;Corresponding author. Department of Orthopaedic Surgery, Juntendo University, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan. Tel: [phone].;Department of Orthopaedic Surgery, Juntendo University school of medicine, Tokyo, Japan;

关键词: Cementless stem;    Proximal-distal mismatch;    Revision THA;    Digital tomosynthesis;    Scintigraphy;   

DOI  :  

来源: DOAJ

【 摘 要 】

The diagnosis of and decision-making for early revision surgery to treat failure of biological fixation with a proximally coated cementless stem are challenging. A 73-year-old woman was referred to our hospital with thigh pain 2 years after the initial total hip arthroplasty. Although a plain radiograph showed no signs indicating biological fixation failure, digital tomosynthesis showed a highly radiodense line along the proximal part, and bone scintigraphy showed uptake at the distal part. With the diagnosis of biological fixation failure due to the proximal-distal mismatch, the cementless stem was revised to a cemented stem, and the thigh pain was improved after the revision surgery. Digital tomosynthesis and bone scintigraphy can be helpful for the diagnosis of biological fixation failure due to proximal-distal mismatch.

【 授权许可】

Unknown