Heterotopic ossification after total knee arthroplasty

Takashi Toyoda, Hedeo Matsumoto, Takashi Tsuji, Junnosuke Kinouchi, Kyosuke Fujikawa

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)


The incidence of heterotopic ossification (HO) after total knee arthroplasty (TKA) and its effect on the postoperative range of motion (ROM) were assessed in 63 primary TKAs. Twenty-five of 63 knees (39%) showed postoperative HO, most of which were found in the region anterior to the distal femur. The incidence of HO was significantly higher (P < .05) in the osteoarthritic knees than in the rheumatoid knees. Significant positive correlation was seen between the preoperative grade of osteophyte formation and the incidence of postoperative HO. The ROM in the knees with HO was not significantly different than that in the knees without HO at 1 year after surgery. Thus, we concluded that HO after TKA is a self-limiting condition and its pathogenesis is completely different from that of myositis ossificance.

Original languageEnglish
Pages (from-to)760-764
Number of pages5
JournalJournal of Arthroplasty
Issue number6
Publication statusPublished - 2003 Sept


  • Heterotopic ossification
  • Total knee arthroplasty

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine


Dive into the research topics of 'Heterotopic ossification after total knee arthroplasty'. Together they form a unique fingerprint.

Cite this