Archives of orthopaedic and trauma surgery
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Arch Orthop Trauma Surg · May 2023
The effect of lumbar spinal fusion on native acetabular anteinclination in standing position.
The complex and dynamic spinopelvic interplay is not well understood. The aims of the present study were to investigate the following: (1) whether native acetabular anteinclination (AI) in standing position changes following lumbar spinal fusion (LSF); (2) potential correlations between AI change (ΔAI) and several spinopelvic parameters such as the change in lumbar lordosis (ΔLL), pelvic tilt (ΔPT), and anterior pelvic plane angle (ΔaPP). ⋯ Retrospective case-control study, Level III.
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Arch Orthop Trauma Surg · May 2023
Influence of rotator cuff preload on fracture configuration in proximal humerus fractures: a proof of concept for fracture simulation.
In regard of surgical training, the reproducible simulation of life-like proximal humerus fractures in human cadaveric specimens is desirable. The aim of the present study was to develop a technique that allows simulation of realistic proximal humerus fractures and to analyse the influence of rotator cuff preload on the generated lesions in regards of fracture configuration. ⋯ III.
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Arch Orthop Trauma Surg · May 2023
Clinical outcome and survival rate of the Herbert ulnar head prosthesis for reconstruction of the distal radioulnar joint depending on co-morbidity and different indications.
Ulnar head prostheses have been developed to restore the integrity of the DRUJ and relieve pain. This study aims to evaluate the long-term outcome of the clinical and radiographic results as well as the survival rate of the Herbert ulnar head prosthesis (UHP) depending on co-morbidity and different indications. ⋯ IV.
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Arch Orthop Trauma Surg · May 2023
Amorphous calcium deposits of the hip joint: current observations and state of the scientific discussion.
As a result of increasing hip arthroscopies, rare pathologies as intra-articular amorphous calcium deposits in the capsule-labral (perilabral) recess can be recognized. There is a lack of publications on this pathology. The largest case series included 18 patients. An association between femoroacetabular impingement syndrome (FAIS) and female sex was observed. Furthermore, a correlation between the size of the calcific deposit and the preoperative hip function score was reported. Our hypothesis was that the data of our patient collective with intraoperative amorphous calcium deposits of the hip joint are comparable to the existing data to confirm previous observations. ⋯ Amorphous calcium deposits were found in approximately 1% of all hip joints with indication for hip arthroscopy. They are not consistently associated with gender, intra-articular hip pathologies or comorbidities. The clustered occurrence in cam FAI can be justified solely by the fact that impingement is by far the most common indication for hip arthroscopy.
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Arch Orthop Trauma Surg · May 2023
Effect of implant composition on periprosthetic bone mineral density after total hip arthroplasty.
The severity of bone mineral density (BMD) loss after total hip arthroplasty (THA) depends on both implant- and patient-related factors. While implant fixation type is an important factor, but few studies have considered the effect of material composition on the same implant fixation type. In particular, differences in mechanical stiffness due to material composition are of great interest. Here, we compared changes in periprosthetic BMD after THA using proximal fixation concept stems comprising different titanium alloys, i.e., β titanium alloys stem and α + β titanium alloys stem. ⋯ α + β titanium alloys stem resulted in a significantly higher rate of BMD loss in zones 6 and 7 compared with the β titanium alloys stem. These results may be due to differences in mechanical stiffness due to the different titanium alloy composition of the prosthetics.