Patellofemoral mechanics after uniplane open wedge high tibial osteotomy is superior to those after biplane open wedge high tibial osteotomy. It is known that open wedge high tibial osteotomy (OWHTO) may lead to progression of patellofemoral degeneration due to descent of the patellar height. However, the difference in patellofemoral joint (PFJ) loads with normal daily activity between uniplane and biplane osteotomies is unclear. The purpose of this study was to reveal the differences in PFJ biomechanics between uniplane and biplane OWHTO using finite element analysis (FEA). In this study, a finite element model of the knee joint was established using computed tomography (CT) and magnetic resonance imaging (MRI) data from a healthy volunteer, and a 10° varus deformity of the proximal tibia
Influence of unfavourable osteotomy on skeletal stability and temporomandibular joint symptoms in sagittal split ramus osteotomy. This study was performed to investigate the impact of the split line on postoperative stability and temporomandibular joint (TMJ) disorders (TMD) after sagittal split ramus osteotomy. Skeletal Class III malocclusion patients who underwent mandibular osteotomy with/without plate fixation between August 2008 and March 2023 were enrolled retrospectively. The osteotomy lines were divided into original sagittal split ramus (SSRO), short lingual (SLO), and short buccal (SBO) osteotomies. Skeletal stability was evaluated, and TMDs were assessed preoperatively. Overall, 135 patients (270 TMJs) (87 female, 48 male; mean age 23.7 ± 7.8 years) were included. Mean mandibular
Serial Quantitative Evaluation of Load Redistribution and Osteotomy Gap After Medial Open-Wedge High Tibial Osteotomy. The goal of medial open-wedge high tibial osteotomy (MOW-HTO) is to redistribute load by realigning the lower limb. This surgery is indicated for mild to moderate medial compartment osteoarthritis with varus deformity in cases unresponsive to conservative treatment. Procedures -photon emission computed tomography and conventional CT (SPECT/CT) were performed on postoperative Day 1, 3 months, 1 year, and 2 years. Maximum standardized uptake value (SUVmax) was measured in each compartment and the osteotomy gap. At 1 year postoperatively, SUVmax decreased in the medial femur and tibia zones (p < 0.001). SUVmax decreased in the lateral osteotomy gap zones at 1 year (p = 0.001
Effect of posteriorly inclined sagittal osteotomy on posterior tibial slope in biplanar medial opening wedge high tibial osteotomy: a case series study. Medial opening wedge high tibial osteotomy aims to correct coronal plane deformities and redistribute the load in varus-aligned knees. However, changes in the sagittal plane during medial opening wedge high tibial osteotomy can influence the posterior tibial slope, potentially affecting knee biomechanics. The sagittal inclination angle of the osteotomy, which is the angle between the medial joint line and the osteotomy line on lateral view, is a relatively new parameter that has been discussed in the literature, as a factor influencing the posterior tibial slope. The aim of this study is to investigate success rates in achieving the targeted
Measuring osteotomy wedge angle is more important than measuring wedge height in open wedge osteotomies around the knee in preoperative planning. Preoperative planning for medial open wedge high tibial osteotomies (HTOs) and lateral open wedge distal femur osteotomies (DFOs) commonly uses wedge height to guide accurate correction. However, it is unclear if this parameter is influenced by intraoperative variations in osteotomy entry point or length. This study hypothesized that wedge angle remains constant during planning, while wedge height varies depending on hinge or entry points. Whole leg radiographs of 40 patients who underwent HTO or DFO (2018-2024) were analysed using digital planning software. For each HTO and DFO case, 27 and 21 osteotomy variants were created, respectively
Modified minimally invasive chevron osteotomy versus traditional incision chevron osteotomy. This study aimed to compare modified minimally invasive chevron osteotomy (MIC group) and traditional incision chevron osteotomy (TIC group) for correction of mild to moderate hallux valgus deformity. This retrospective study enrolled 42 patients (60 feet) with mild to moderate hallux valgus deformities who were treated with modified MIC osteotomy or TIC osteotomy between January 2020 and June 2021. The patients were divided into the MIC and TIC groups according to whether the treatment received was minimally invasive. The MIC group included 20 patients (28 feet), comprising 1 male and 19 female patients; aged 37.15 ± 14.60 years, with mild hallux valgus deformity in 12 cases (14 feet) and moderate
Chinese Clinical Practice Guidelines in Treating Knee Osteoarthritis by Periarticular Knee Osteotomy Unicompartmental knee osteoarthritis (UKOA) is the early stage of knee joint degeneration, which is characterized by unicompartmental degeneration and mostly occurs in medial compartment. Pain and limited motion are main symptoms, which affect patients' life quality. Periarticular knee osteotomy and principles, item 22 describes 3D printing corrective osteotomy technique, and items 23-25 address the perioperative period, follow-up management, and other content. These guidelines are designed to improve the normalization and standardization of KOA treatment by PKO for lower extremity alignment correction.
Bilateral Obturator Osteotomy: A Novel Osteotomy for Bladder Exstrophy Closure. Abdominal and pelvic closure remains a challenge during bladder exstrophy initial repair. We aimed to report on the feasibility and results of a novel technique of bilateral obturator osteotomy. Retrospective study of prospective collected data of children who underwent single-stage delayed bladder exstrophy closure combined with RSTM (Radical Soft Tissue Mobilization) for BEEC (Bladder Exstrophy Epispadias Complex) by the same team at different institutions between December 2017 and May 2021. When pubic approximation was not feasible at the end of the procedure, bilateral obturator osteotomy was performed through the same approach, consisting in bilateral divisions of the ilio-pubic rami, ischio-pubic rami
Improvement of Valgus Deviation of the Lesser Toes of Moderate to Severe Hallux Valgus After Proximal Chevron Metatarsal Osteotomy and Akin Osteotomy. This study examines the correction of lesser toe valgus deviation following proximal chevron metatarsal osteotomy (PCMO) and Akin osteotomy in moderate to severe hallux valgus patients, while identifying influencing factors. Among 89 patients (116 feet), those with moderate to severe hallux valgus underwent PCMO and Akin osteotomy. Radiologic assessments included preoperative metatarsus adductus angle (MAA), hallux valgus angle (HVA), intermetatarsal angle (IMA), valgus angles of the second to fourth metatarsophalangeal joints, and hallux valgus recurrence. Assessments included visual analog scale (VAS) pain scores, American Orthopaedic Foot
Editorial Commentary: High Tibial Osteotomy and Distal Femoral Osteotomy Address Biologics and Biomechanics. Osteotomies were historically a common treatment for knee osteoarthritis. This has given way to arthroplasty in many patients. However, osteotomies are still an excellent treatment for younger patients with malignment and joint pain. High tibial and distal femoral osteotomy are both mechanical and biological surgeries. Osteotomies about the knee result in both mechanical correction and modulation of the inflammatory environment in the joint resulting from correction of malalignment. This reinforces their importance in the treatment of the knee joint as an organ in which a complex interplay of factors is required for homeostasis. Osteotomy is a critical part of comprehensive treatment
Editorial Commentary: Risk of Lateral Hinge Fracture After Knee Medial Opening-Wedge High Tibial Osteotomy Can Be Reduced With Osteotomy at the Level of the Proximal Tibiofibular Joint and Gap Width of No Larger Than 11 mm. Medial opening-wedge high tibial osteotomies are commonly performed to treat varus deformity and medial compartment osteoarthritis of the knee in active younger individuals . A common complication of this procedure is the development of a lateral hinge fracture. This can occur both acutely and with a delayed presentation. There are many considerations to reduce this fracture, including biplanar versus monoplanar osteotomy, amount of correction/gap width, level of the osteotomy, and lateral cortical distance of the osteotomy. To best reduce the risk of a lateral hinge fracture
Periacetabular osteotomy: an analysis of social media to determine the most common questions asked by the periacetabular osteotomy population. The Bernese Periacetabular Osteotomy (PAO) has become a popular surgery for fixing development dysplasia of the hip, yet the most common concerns of the PAO population remains ambiguous. The aim of this study was to investigate Facebook, Instagram most populated interest groups; "Periacetabular Osteotomy (PAO)" and "Periacetabular Osteotomy Australia". Instagram and Twitter were queried for the most popular hashtags: "#PAOwarrior", "#PAOsurgery", "#periacetabularosteotomy", "#periacetabularosteotomyrecovery", and "#paorecovery". Patient questions were categorized according to preoperative and postoperative questions. Questions were further
Comparative effects of modified rotary scarf osteotomy and traditional scarf osteotomy in treating moderate to severe hallux valgus: a retrospective cohort study. Traditional Scarf osteotomy (TSO) is an effective procedure with a good record in moderate to severe hallux valgus (MSHV) surgery. In order to overcome shortcomings of TSO, Modified Rotary Scarf osteotomy (MRSO) was introduced
Comparison of short-term clinical outcomes between open-wedge high tibial osteotomy and tibial condylar valgus osteotomy. This study aimed to compare radiological features and short-term clinical outcomes between open-wedge high tibial osteotomy (OWHTO) and tibial condylar valgus osteotomy (TCVO), to provide information facilitating decision-making regarding those two procedures. Twenty-seven after surgery in both groups, although postoperative scores on three subscales (Symptom, Pain, and ADL) were lower in the TCVO group (Symptom: HTO, 79.0; TCVO, 67.5; Pain: HTO, 80.5; TCVO, 71.1; ADL: HTO, 86.9; TCVO, 78.0). Both osteotomy procedures improved short-term clinical outcomes postoperatively. TCVO appears preferable in cases of advanced knee OA with incongruity and high varus-valgus joint
Pressure change at ankle joint in supramalleolar osteotomy with or without fibular osteotomy according to different types of varus ankle. The need for additional fibular osteotomy (FO) when performing supramalleolar osteotomy (SMO) in the varus ankle arthritis (VAA) is controversial. Some cadaveric studies have been performed to prove this; however, it is difficult to implement deformities
High Tibial Osteotomy with Posterior Medial Meniscal Root Reconstruction Yields Improved Radiographic and Functional Outcomes and Healing Rates Compared to Osteotomy Alone. To compare pre- and post-operative clinical and radiological outcomes between patients undergoing high tibial osteotomy (HTO) with medial meniscus posterior root tear (MMPRT) reconstruction using gracilis tendon graft versus
The Osteotomy Gap Filling Rate of Multiple Time Points After Medial Opening Wedge High Tibial Osteotomy Without Bone Graft. The purpose of the present study was to analyze osteotomy gap filling of multiple time points until 2 years post-medial opening wedge high tibial osteotomy (MOWHTO). The absolute value of gap filling and postoperative changes relative to the preoperative void osteotomy gap were evaluated using computed tomography (CT) at each time point. Data of thirty patients who underwent MOWHTO between September 2019 and July 2021 were retrospectively analyzed. Surgical procedures without bone grafts were performed; a standardized rehabilitation protocol was implemented. The osteotomy gap filling rate was measured using CT scans at the immediate postoperative period and at 6, 12
Corner Osteotomy as the more Advanced Approach to Deformity Correction in Adult Spinal Deformity: A Retrospective Comparative Study Between Two Osteotomy Techniques. A retrospective study. To investigate the usefulness of corner osteotomy (CO) in patients with adult spinal deformity (ASD) by comparing with pedicle subtraction osteotomy (PSO) for lordosis correction. PSO remains a valuable , mean follow-up period 78.9 mo) with ASD who underwent deformity correction using PSO or CO. Comparative analysis was performed on spinopelvic parameters including segmental angle (SA) around the osteotomy site, and clinical and surgical assessment between the PSO and corner groups. In the corner group, the postoperative SA (35° vs. -39.3°, P=0.004) and the degree of SA correction (34.8° vs. 39.7°, P
Surgical treatment for recurrent patellar dislocation with severe torsional deformities: Double-level derotational osteotomy may not have a clear advantage over single-level derotational osteotomy in improving clinical and radiological outcomes. The purpose of this study was to investigate whether double-level (femur + tibia) derotational osteotomy is superior to single-level femoral derotational osteotomy for recurrent patellar dislocation with severe femoral and tibial rotational deformities (femoral anteversion >30° and external tibial torsion >30°). Between January 2015 and June 2020, a total of 115 knees with recurrent patellar dislocation treated with combined medial patellofemoral ligament reconstruction (MPFL-R) and derotational osteotomies were evaluated after a minimum follow
Postoperative maxillary stability after Le Fort I osteotomy using a u-HA/PLLA system: three-dimensional analysis by surface superimposition based on virtual Le Fort I osteotomy. The postoperative stability achieved with Le Fort I osteotomy (LFI) using bioabsorbable systems remains controversial. A new method - multipoint measurement method - was devised for detailed three-dimensional examination