Archives of orthopaedic and trauma surgery
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Arch Orthop Trauma Surg · Sep 2021
Augmented reality for base plate component placement in reverse total shoulder arthroplasty: a feasibility study.
Accurate glenoid positioning in reverse total shoulder arthroplasty (RSA) is important to achieve satisfying functional outcome and prosthesis longevity. Optimal component placement can be challenging, especially in severe glenoid deformities. The use of patient-specific instruments (PSI) and 3D computer-assisted optical tracking navigation (NAV) are already established methods to improve surgical precision. Augmented reality technology (AR) promises similar results at low cost and ease of use. With AR, the planned component placement can be superimposed to the surgical situs and shown directly in the operating field using a head mounted display. We introduce a new navigation technique using AR via head mounted display for surgical navigation in this feasibility study, aiming to improve and enhance the surgical planning. ⋯ AR may be a promising new technology for highly precise surgical execution of 3D preoperative planning in RSA.
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Arch Orthop Trauma Surg · Sep 2021
Comparative StudyBiomechanical comparison of screw osteosyntheses and anatomical plating for coronoid shear fractures of the ulna.
Among the few techniques described for the treatment of coronoid fractures, osteosynthesis techniques include screw osteosynthesis from anterior to posterior (AP) or from posterior to anterior (PA) and plate osteosynthesis. The aim of this study was to test the biomechanical stability of screw osteosynthesis and plate osteosynthesis using anatomical plates in coronoid process fractures. ⋯ Basic science study.
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Arch Orthop Trauma Surg · Sep 2021
Clinical results of the BoneWelding®Fiji® anchor for the treatment of Stener lesions of the thumb.
A new technology (Sportwelding®) was recently presented, which uses ultrasonic energy to meld a resorbable suture anchor at the interface with the host bone. A standardized clinical use was not investigated yet. This study prospectively evaluated the surgical and clinical outcomes of the Fiji Anchor® (Sportwelding®, Schlieren, Switzerland) in the repair of an ulnar collateral ligament lesion of the metacarpophalangeal joint of the thumb. ⋯ One advantage of this anchor appears to be its stable fixation in cancellous bone. The surgical treatment of an ulnar collateral ligament lesion of the thumb using the Fiji Anchor® can lead to an excellent clinical outcome with a minor complication rate; however, long-term dangers and the cost effectiveness of the procedure are not known yet.
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Arch Orthop Trauma Surg · Sep 2021
Different wear in two highly cross-linked polyethylene liners in THA: wear analysis with EBRA.
The purpose of this study was (1) to compare early wear rates in bedding-in periods of two highly cross-linked polyethylene liners frequently used in THA and (2) to evaluate risk factors indicating a possible higher wear rate. ⋯ Level III (retrospective comparative study with prospective cohort).
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Arch Orthop Trauma Surg · Sep 2021
Polytetrafluoroethylene (PTFE) suture vs fiberwire and polypropylene in flexor tendon repair.
In this study, we evaluate the value of novel suture material based on monofilamentous-extruded polyfluoroethylene (PTFE) compared to polypropylene (PPL) and Fiberwire (FW). ⋯ Fiberwire showed superior handling and knotting properties in comparison to PTFE. However, PTFE allows easier approximation of the stumps. In both, M-Tang and Adelaide repairs, PTFE was equal to FW in terms of repair strength. Both PTFE and FW provide for a robust tendon repair so that early active motion regimens for rehabilitation can be applied.