Skip to main content
Log in

Hemicallotasis for medial gonarthrosis: a short-term follow-up of 21 patients

  • Original Article
  • Published:
Archives of Orthopaedic and Trauma Surgery Aims and scope Submit manuscript


We have prospectively evaluated 21 patients (22 knees; 15 men and 6 women) who underwent hemicallotasis osteotomy (HO), using an external fixator, of the proximal tibia due to medial gonarthrosis. Their median age at the time of operation was 52 (range 39–62) years. The follow- up period was 12–28 months. The Hospital for Special Surgery score (HSS) increased from median 71 preoperatively to 83 points at the follow-up (p<0.001). The median hip-knee-ankle angle (HKA) was 187° preoperatively, 177° after distraction, and 180° at the time of follow-up (p<0.001). In 5 knees, valgus angulation was not achieved during the distraction phase, and in two-thirds of the knees, there was no valgus at follow-up. The total time in external fixation was median 13 (range 8–16) weeks. Pin tract problems occurred in 12 cases. There was one deep vein thrombosis, and 2 patients had to undergo re-operations due to technical errors. One patient acquired a bacterial arthritis 6 months after the operation. The clinical short-term results with HO seem to be comparable to those reported earlier for closing-wedge osteotomy. However, HO is a trying procedure for the patient as well as for the surgeon, due to frequent minor complications requiring frequent follow-ups.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Subscribe and save

Springer+ Basic
EUR 32.99 /Month
  • Get 10 units per month
  • Download Article/Chapter or Ebook
  • 1 Unit = 1 Article or 1 Chapter
  • Cancel anytime
Subscribe now

Buy Now

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

Author information

Authors and Affiliations


Additional information

Electronic Publication

Rights and permissions

Reprints and permissions

About this article

Cite this article

Gerdhem, P., Abdon, P. & Odenbring, S. Hemicallotasis for medial gonarthrosis: a short-term follow-up of 21 patients. Arch Orthop Trauma Surg 122, 134–138 (2002).

Download citation

  • Received:

  • Issue Date:

  • DOI: