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Article
Open AccessHow useful are indirect radiographic measurements of hip instability in borderline hip dysplasia? An MRI-based comparison to a healthy cohort
Symptomatic hips with borderline hip dysplasia (BHD) morphology pose a challenge in differentiating stable from unstable hips. The current study aims to compare indirect radiographic signs of instability in a ...
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Article
Open AccessConventional vs. endoscopic-assisted curettage of benign bone tumours. An experimental study
This experimental study aimed at directly comparing conventional and endoscopic-assisted curettage towards (1) amount of residual tumour tissue (RTT) and (2) differences between techniques regarding surgical t...
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Article
Open AccessHigh femoral offset as a risk factor for aseptic femoral component loosening in cementless primary total hip arthroplasty
Lateralized stems in primary cementless total hip arthroplasty (THA) showed to be associated with aseptic femoral loosening. However, femoral head length also affects femoral offset but was not considered so f...
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Article
Revision total knee arthroplasty results in financial deficits within the Swiss healthcare system
Revision total knee arthroplasty (RTKA) results in high costs with inadequately low reimbursement in different healthcare systems. Therefore, a financial analysis was performed comparing costs and reimbursemen...
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Article
Influence of medial open wedge high tibial osteotomy on tibial tuberosity–trochlear groove distance
Medial open wedge high tibial osteotomy (MOWHTO) is an effective treatment option for realignment of a varus knee. However, a simple supra-tuberositary osteotomy can lead to patella baja and potentially increa...
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Article
Tibial joint line orientation has no effect on joint awareness after mechanically aligned total knee arthroplasty
Joint line orientation (JLO) plays an important role in total knee arthroplasty (TKA), but its influence on patient-reported outcomes (PROs) is unclear. The purpose of this study was to examine JLO impact as m...
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Article
Open AccessConsistency of 3D femoral torsion measurement from MRI compared to CT gold standard
Several hip and knee pathologies are associated with aberrant femoral torsion. Diagnostic workup includes computed tomography (CT) and magnetic resonance imaging (MRI). For three-dimensional (3D) analysis of c...
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Article
Open AccessCorrection of complex three-dimensional deformities at the proximal femur using indirect reduction with angle blade plate and patient-specific instruments: a technical note
Corrective osteotomies for complex proximal femoral deformities can be challenging; wherefore, subsidies in preoperative planning and during surgical procedures are considered helpful. Three-dimensional (3D) p...
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Chapter
Tumore des Bewegungsapparates
Dieses Kapitel befasst sich mit den Grundbegriffen und der Diagnostik. Dargestellt werden die wichtigsten benignen und malignen Knochen- und Weichteiltumore und die chirurgischen Prinzipien.
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Article
Rotation or flexion alters mechanical leg axis measurements comparably in patients with different coronal alignment
Flexion and rotation of the knee joint are supposed to alter the measurement of the mechanical leg axis on long leg radiographs. However, in patients with varus or valgus alignment it has not been systematical...
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Article
Open AccessA real 3D measurement technique for the tibial slope: differentiation between different articular surfaces and comparison to radiographic slope measurement
The tibial slope plays an important role in knee surgery. However, standard radiographic measurement techniques have a low reproducibility and do not allow differentiation between medial and lateral articular ...
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Article
Accuracy of three dimensional-planned patient-specific instrumentation in femoral and tibial rotational osteotomy for patellofemoral instability
Patellofemoral instability can be caused by tibial or femoral torsional deformity. Established surgical treatment options are rotational osteotomies, but the transfer from pre-operative planning to surgical ex...
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Article
Open AccessMal-angulation of femoral rotational osteotomies causes more postoperative sagittal mechanical leg axis deviation in supracondylar than in subtrochanteric procedures
Alteration of the postoperative frontal mechanical leg axis is a known problem in femoral rotational osteotomies. However, the maintenance of the sagittal mechanical leg axis seems also important. Goal of this...
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Article
Open AccessThe impact of limb loading and the measurement modality (2D versus 3D) on the measurement of the limb loading dependent lower extremity parameters
Deformity assessment and preoperative planning of realignment surgery are conventionally based on weight-bearing (WB) radiographs. However, newer technologies such as three-dimensional (3D) preoperative planni...
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Article
Open AccessMeniscus sizing using three-dimensional models of the ipsilateral tibia plateau based on CT scans – an experimental study of a new sizing approach
Selection of a meniscus allograft with a similar three-dimensional (3D) size is essential for good clinical results in meniscus allograft surgery. Direct meniscus sizing by MRI scan is not possible in total me...
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Article
Malpositioning of patient-specific instruments within the possible degrees of freedom in high-tibial osteotomy has no considerable influence on mechanical leg axis correction
Patient-specific instruments (PSIs) are helpful tools in high tibial osteotomy (HTO) in patients with symptomatic varus malalignment of the mechanical leg axis. However, the precision of HTO can decrease with ...
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Article
Open AccessAccuracy of 3D-planned patient specific instrumentation in high tibial open wedge valgisation osteotomy
High tibial osteotomy (HTO) is an effective treatment option in early osteoarthritis. However, preoperative planning and surgical execution can be challenging. Computer assisted three-dimensional (3D) planning...
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Article
Open AccessThree-dimensional meniscus allograft sizing—a study of 280 healthy menisci
Inaccurate meniscus allograft size is still an important problem of the currently used sizing methods. The purpose of this study was to evaluate a new three-dimensional (3D) meniscus-sizing method to increase ...
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Article
Open AccessApplicability of augmented reality in orthopedic surgery – A systematic review
Computer-assisted solutions are changing surgical practice continuously. One of the most disruptive technologies among the computer-integrated surgical techniques is Augmented Reality (AR). While Augmented Rea...
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Article
Open AccessThe impact of mal-angulated femoral rotational osteotomies on mechanical leg axis: a computer simulation model
Subtrochanteric or supracondylar femoral rotational osteotomies are established surgical treatments for femoral rotational deformities. Unintended change of the mechanical leg axis is an identified problem. Di...
