Outcome of total knee arthroplasty in patients with Blount disease or Blount-like deformity: a systematic review.

Abstract

Blount disease is a genetic disorder affecting the proximal tibial bone, resulting in a complex deformity of the knee. In the absence of timely treatment, the likelihood of developing degenerative arthritis increases. A total knee arthroplasty (TKA) is the conventional treatment for adult patients with Blount disease or Blount-like deformity with advanced degenerative changes. The aim of this systematic review is to evaluate the results of TKA in this particular cohort of patients. The present systematic review comprised a total of 5 articles. The 5 evaluated studies included data from 9 patients who undergone 12 TKAs. The patients were assessed throughout an average follow-up duration of 4 years. In all, there were three revisions of the prosthetic components. All studies achieved successful clinical scores at the last follow-up. A thorough exploration of PubMed, Embase, and Web of Science was conducted to identify research that documented the results of TKA in patients diagnosed with Blount disease or Blount-like deformity. TKA in patients with Blount disease or Blount-like deformities is intricate and demanding. Constrained implants can effectively mitigate the possible problem of persistent instability. Notwithstanding the unfavorable circumstances, TKA in this cohort of patients appears to yield satisfactory outcomes during the short- to medium-term period of observation. Other study is necessary to establish the enduring outcomes of TKA in this particular cohort of patients.