DOS 2020

DOS Kongressen 2020 · 55 Mid-term results after treatment of complex talus osteochondral defects with HemiCAP implantation Jens K. Johansen, Kim H. Andersen, Christopher Jantzen, Mostafa Benyahia, Peter Bro-Rasmussen, Lars B. Ebskov Department of Orthopedic Surgery, Foot and Ankle Section , Hvidovre University Hospital, Copenhagen, Denmark Background: Osteochondral defects (OCDs) of the talus represents a surgical challenge. Primary OCDs with a size less than 150 mm2 /15 mm in diameter, without large cyst formation or other complicating factors can be treated with simple arthroscopic bone marrow stimulation techniques. When confronted with more complex OCDs a HemiCAP metal resurfacing implant of talus might be an option but few follow-up studies exist. Purpose / Aim of Study: To evaluate the mid-term results after HemiCAP implantation in patients with complex OCDs during the period 2008-2016. Materials and Methods: Patients were included during the period 2008- 2016. Inclusion criteria’s were: OCD of the medial or lateral talar dome, symp- toms for >1 year since last surgery, OCD treated at least 1 year conservatively without effect. Exclusion criteria’s were: defects larger than 20 mm, ankle os- teoarthritis Grade >II or other ankle pathology, known allergy to implant mate- rial or diabetes. Outcome measures were the American Orthopaedic Foot and Ankle Society Score, the Numerical Rating Scale, Foot and Ankle Outcome Score, sports participation, work level and radiographic evaluation. Implant survival, defined as the implant remaining in situ without revision to total ankle arthro- plasty, ankle fusion or removal of the implant was evaluated as well. Findings / Results: 31 patients were included during the period with a mean follow-up of 50 months (11.5 – 81.4). All outcome measures improved signifi- cantly. Only one patient had an complication registered which were an infection treated with antibiotics. 13 patients (41,9 %) had an additional procedure per- formed (eg. arthroscopic debridement, hardware removal, cheilectomy) with none of the patients being revised. Conclusions: The primary aim of OCD treatment is to reduce pain, and this is achieved with the HemiCAP implant in patients with complex OCDs even tough patient information and selection is mandatory due to the relative high numbers of additional surgery following the HemiCap implantation. 45.