Resorbability of rigid beta-tricalcium phosphate wedges in open-wedge high tibial osteotomy: a retrospective radiological study

The Knee
T KraalB J van Royen

Abstract

The open-wedge high tibial osteotomy (OWHTO) is a well accepted treatment modality for patients with osteoarthritis of the medial compartment associated with genu varum. To fill in the osteotomy gap 30% macroporosity rigid beta-tricalcium phosphate (beta-TCP) is frequently used as a stable resorbable bone substitute. However, the resorbability of these beta-TCP wedges is not known. The aim of this study was to investigate this. Twenty-one OWHTO procedures in seventeen patients were performed with the use of 30% macroporosity rigid beta-TCP wedges. The osteotomies were fixed using an angle-stable locking plate. Conventional AP and lateral radiographs were examined in order to assess the resorbability of the 30% macroporosity rigid beta-TCP wedges as a function of time. A radiological classification system consisting of five phases was used to monitor the resorption of the 30% macroporosity rigid beta-TCP wedges. The mean duration of follow-up was 62 months (+/-23 range of 28-99). In all 21 cases, remnants of the 30% macroporosity rigid beta-TCP wedges were still present at maximum follow-up. Although the boundaries between 30% macroporosity rigid beta-TCP wedges and bone remained slightly visible, all osteotomies were completely...Continue Reading

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Citations

Mar 30, 2010·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Maher A El-AssalHatem M A Bakr
Jan 24, 2014·European Journal of Orthopaedic Surgery & Traumatology : Orthopédie Traumatologie·Faik TürkmenSerdar Toker
Feb 6, 2014·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·T TanakaK Marumo
Oct 6, 2011·Acta Biomaterialia·Ziyang ZhangArndt F Schilling
Jan 18, 2015·Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association·Nicholas J LashAnneka K Richmond
Dec 9, 2016·Advanced Healthcare Materials·Susan A ClarkeFraser Buchanan
Oct 2, 2013·The Open Orthopaedics Journal·N M HooperG J Hooper
Jan 5, 2011·The Journal of Bone and Joint Surgery. British Volume·H-C LimD-H Kum

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