[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100515479":3},{"organization":4,"armGroups":7,"interventions":20,"overallOfficials":31,"centralContacts":35,"locations":41,"responsibleParty":59,"collaborators":26,"id":62,"slug":63,"hasResults":64,"nctId":65,"briefTitle":66,"officialTitle":67,"acronym":68,"eligibilityCriteria":69,"healthyVolunteers":64,"sex":70,"minAge":71,"maxAge":26,"enrollmentInfo":72,"targetDuration":26,"studyType":75,"phases":76,"briefSummary":78,"conditions":79,"keywords":81,"overallStatus":44,"whyStopped":26,"lastUpdateSubmitDate":87,"lastUpdatePostDateStruct":88,"startDateStruct":91,"completionDateStruct":93,"leadSponsor":95,"locationsCount":96},{"fullName":5,"class":6},"UMC Utrecht","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Putty","EXPERIMENTAL","The osteotomy gap will be filled with a synthetic ceramic material, Putty",[13],"Procedure: Osteotomy with putty",{"label":15,"type":16,"description":17,"interventionNames":18},"Conventional","PLACEBO_COMPARATOR","Osteotomy performed according to the conventional method, without gap filler",[19],"Procedure: Conventional osteotomy",[21,27],{"type":22,"name":23,"description":24,"armGroupLabels":25,"otherNames":26},"PROCEDURE","Osteotomy with putty","Synthetic ceramic putty",[9],null,{"type":22,"name":28,"description":29,"armGroupLabels":30,"otherNames":26},"Conventional osteotomy","conventional osteotomy",[15],[32],{"name":33,"affiliation":5,"role":34},"R.J.H. Custers, Dr","PRINCIPAL_INVESTIGATOR",[36],{"name":33,"role":37,"phone":38,"phoneExt":39,"email":40},"CONTACT","088 7558327","+31","r.j.h.custers@umcutrecht.nl",[42],{"facility":43,"status":44,"city":45,"state":45,"zip":46,"country":47,"countryCode":48,"cosmosGeoPoint":49,"geoPoint":54,"contacts":55},"University medical center Utrecht","RECRUITING","Utrecht","3584 CX","Netherlands","NL",{"type":50,"coordinates":51},"Point",[52,53],5.12222,52.09083,{"lat":53,"lon":52},[56],{"name":57,"role":37,"phone":58,"phoneExt":39,"email":40},"Roel Custers, M.D., PhD","0887558327",{"type":34,"investigatorFullName":60,"investigatorTitle":61,"investigatorAffiliation":5,"oldNameTitle":26,"oldOrganization":26},"R.J.H. Custers","Principal investigator","100515479","use-of-a-putty-as-gap-filler-in-open-wedge-osteotomy-100515479",false,"NCT05992038","Use of a Putty as Gap Filler in Open-wedge Osteotomy","A Randomized Controlled Trial of AttraX® Putty vs. Conventional Open-wedge Osteotomy Without Gap Filler in Open-wedge Osteotomy","AXOS","Inclusion Criteria:\n\n* indication for an open-wedge osteotomy of the femur, tibia or double level due to unicompartmental osteoarthritis (OA).\n* Comply with all aspects of the treatment, including CT scans, radiographs and 1-year follow-up\n* Informed consent\n\nExclusion Criteria:\n\n* Osteotomy for indication of cartilage treatment or other knee surgeries than unicompartmental OA\n* Correction using an open wedge above 10 mm\n* Pregnant women at time of enrollment or women who are planning to become pregnant during the duration of the study","ALL","18 Years",{"count":73,"type":74},40,"ESTIMATED","INTERVENTIONAL",[77],"NA","Rationale: Realignment osteotomies around the knee are a proven surgical treatment for unicompartmental knee osteoarthritis and a malalignment. Osteotomies can be very painful in the early postoperative phase. This is probably due to a combination of bony cut (bone pain) and postoperative hematoma (bleeding and leakage of the bone marrow) in the surrounding soft tissue. The AttraX® Putty can be used as a gap filler in open wedge osteotomies to potentially reduce postoperative pain by reducing the bleeding from the bone gap.\n\nObjective: The main aim of this study is to determine whether early postoperative pain is decreased when the osteotomy gap is filled with AttraX® Putty, compared to conventional open wedge osteotomy without filling the gap. The secondary aims are faster accelerated rehabilitation\u002Fregaining function, reduction of local blood loss, accelerated bone union, comparable surgical accuracy, and the occurrence of (serious) adverse events.\n\nStudy design: Single-blinded, prospective, randomized controlled trial.\n\nStudy population: Adult patients qualifying for open-wedge tibial, open-wedge femur or double level osteotomy.\n\nIntervention: According to a randomization scheme, the osteotomy gap will be filled with either the synthetic ceramic material AttraX® Putty or without a gap filler (conventional method).\n\nMain study parameters\u002Fendpoints: The main study endpoint is the Numeric Rating Scale (NRS) pain during the first week postoperative. The secondary study endpoints are faster rehabilitation\u002Fregaining function, reduction of local blood loss, accelerated bone union, comparable surgical accuracy, and (serious) adverse events.\n\nNature and extent of the burden and risks associated with participation, benefit and group relatedness: Patients may have the advantage of experiencing less pain postoperatively if they are treated with the AttraX® Putty, which can contribute to a faster rehabilitation. Risks to the AttraX® Putty group may include an allergic reaction, failure to promote bone fusion and excessive bone growth. However, the preclinical studies and clinical studies show that the use of AttraX® Putty is safe for use in humans.",[80],"Osteo Arthritis Knee",[82,83,84,85,86],"Osteotomy","Gap filler","Postoperative pain","Randomized controlled trial","AttraX Putty","2026-04-28",{"date":89,"type":90},"2026-04-29","ACTUAL",{"date":92,"type":90},"2023-09-20",{"date":94,"type":74},"2026-12-01",{"name":5,"class":6},1]