Browsing by Author "Petronis, Sandris"

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Bone Grafts in Trauma and Orthopaedics
    (2021-09-04) Archunan, Maheswaran W; Petronis, Sandris; Rīga Stradiņš University
    Worldwide, there are millions of patients each year suffering from bone-related illness due to trauma, degenerative diseases, infections or oncology that require orthopaedic intervention involving bone grafts. This literature review aims to analyse the characteristics of the different bone grafts: autografts, allografts and synthetic bone substitutes. The review will assess their medical value based on their effectiveness as well as scrutinising any drawbacks. The goal is to identify which options can give the optimal result for a patient being treated for a bone defect. Bone autografts remainthe gold standard since there are no issues with histocompatibility or disease transmission while possessing the ideal characteristics: osteogenicity, osteoconductivity and osteoinductivity. However, synthetic options such as calcium phosphate ceramics are becoming popular as a viable alternative for treatment since they can be produced in desired quantitates and yield excellent results while not having the problem of donor site morbidity as seen with autografts. Furthermore, advancements in fields such as bone tissue engineering and three-dimensional printing are generating promising results and could provide a path for excellent treatment in the future. The emergence of such innovations highlights the importance and the constant need for improvement in bone grafting.
  • No Thumbnail Available
    Item
    Filling Bone Defects after Hip Arthroplasty Revision Using Hydroxyapatite/β-tricalcium Phosphate : A Case Report with Long-term Result
    (2021-06) Petronis, Sandris; Jakusonoka, Ruta; Linovs, Viktors; Jumtins, Andris; Department of Orthopaedics
    Introduction: The increasing number of primary total hip replacements means that there is an increased need for hip arthroplasty revisions. The periprosthetic fractures which cause bone defects can occur during removal of the femoral component and healing of these fractures can be delayed. In femoral bone defects during revisions, there are no metal augments for filling these defects. Case Report: Fifty-nine-year-old female presented with infected loosening of the left hip non-cemented endoprosthesis 5 years after surgery. The patient underwent removal of endoprosthesis. In 2 months, re-implantation of non-cemented endoprosthesis was performed and biphasic calcium phosphate (BCP) ceramic granules with hydroxyapatite/β-tricalcium phosphate (HAp/β-TCP) were implanted in the femoral bone defects. Eleven months following the arthroplasty patient had periprosthetic fracture of the distal third of the left femur. The osteosynthesis was performed and BCP ceramic granules with HAp/β-TCP were used to fill the bone defect. Long-term follow-up showed very good functional outcome and bone defect healing. Conclusion: The BCP ceramic granules with HAp/β-TCP material adjusted to the bone defect anatomy, showed effective femoral bone defect and periprosthetic fracture healing in a patient with hip arthroplasty revision and periprosthetic fracture.