Radiographic Evaluation of Medial Opening-Wedge High Tibial Osteotomy Using a New Internal Fixator with a Wedge-Shaped Spacer Block

J Knee Surg DOI: 10.1055/s-0039-1700977We developed a new internal fixator: a rigid T-shaped plate with locking screws and wedge-shaped spacer block for high tibial osteotomy. The purpose of the present study was to evaluate the radiographic outcome of opening-wedge high tibial osteotomy (OWHTO) using this new internal fixator. Sixty OWHTOs were performed in patients with medial compartment osteoarthritis and varus deformity (28 males and 23 females). Patients' mean age was 60.4 years. Preoperative and postoperative radiographs were obtained. The paired t-test was used to evaluate the differences over time with respect to radiographic variables. Union of the osteotomy gap was obtained in all patients, and no implant breakage was found. On anterior–posterior radiographs, a significant difference was observed (p 
Source: Journal of Knee Surgery - Category: Orthopaedics Authors: Tags: Original Article Source Type: research

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AbstractPurposeA recent study reported that positioning a K-wire to intersect the cutting plane at the theoretical lateral hinge location increases the lateral hinge ’s resistance to fracture during the opening of opening wedge high tibial osteotomy (OWHTO). The purpose of this study was to evaluate the clinical relevance of the use of this K-wire and its benefits in terms of lateral hinge protection during OWHTO in daily practice.MethodsA retrospective comparative study identified 206 patients who underwent OWHTO from January 2014 to December 2017. Among these patients, 71 had an additional K-wire (HK  +&thin...
Source: Knee Surgery, Sports Traumatology, Arthroscopy - Category: Orthopaedics Source Type: research
ConclusionsThe magnitude of both medial and lateral coronal soft tissue laxity was a predictor of overcorrection from soft tissue factors after OWHTO. Overcorrection was more likely to occur in cases with both  ≥ 4° JLCA and ≥ 1.5° valgus stress angle.Level of evidenceIII.
Source: Knee Surgery, Sports Traumatology, Arthroscopy - Category: Orthopaedics Source Type: research
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