Squamous cell carcinoma is a common malignant condition affecting the oral cavity and may involve the surrounding maxillofacial regions. Treatment commonly involves resection of the tumor, followed by prosthetic rehabilitation of the resection defect. This clinical report presents a 62-year-old Asian male patient who had previously undergone surgical resection, resulting in a post-surgical Aramany Class II maxillary defect. The patient\'s medical history included severe trismus, characterized by restricted mouth opening, as well as a diagnosis of maxillary sinus verrucous squamous cell carcinoma. This report provides a comprehensive account of the rapid fabrication of an interim obturator using digitally assisted dentistry techniques.

The purpose of this historical review is to highlight the progression and development of prosthetic reconstruction with a focus on the modular distal femur with hinged total knee arthroplasty.
Scientific literature was searched for descriptions of endoprosthetic reconstruction of the extremities to provide a thorough overview of the subject, focusing the research on the evolution of limb salvage of the distal femur.
After the first works of Gluck and Giordano, with ivory and metal and the pioneer shoulder prosthesis by Pean in the late 1890s, a great advancement was brought by reconstructions performed for injured soldiers of the Great War. By the 1940s, replacement of all the main joints had been attempted, and documented.
Walldius in the 1950s developed a fully constrained hinge knee, offering for the first time a consistent and replicable method of substituting the joint. In 1953, Shiers\' prosthesis allowed for good flexion and extension. Stanmore and GUEPAR group prosthesis in the 1960s were the first to have a different right and left side model. The rotating hinge was developed in 1978 by Walker, with the innovative concept of six degrees of freedom. Between 1979 and 1982, Kotz developed the modular segmental replacement that, added to a fixed hinge knee, permitted the revolutionary creation of the modern distal femur replacement.
The study of the materials and mechanical solutions that was brought to the modern distal femur resection prosthesis is a good example of a virtuous multidisciplinary teamwork between orthopaedic surgeons, anatomists, and biomechanical engineers.

BACKGROUND: The implantation of a modular prosthesis is the most popular method of reconstruction of bone defects in oncological patients. Along with clear-cut benefits associated with this procedure, there is also an increased risk of complications. Common complications include deep infections, aseptic loosening and mechanical implant damage. This study assessed the risk of complications following the implantation of a resection prosthesis in patients with lower limb bone tumours and to evaluate difficulties encountered during the treatment.
METHODS: A total of 149 patients with lower limb tumours treated at the Department of Oncological Ortho-paedics in Brzozów had resection prostheses implanted in the years 2016 and 2017. We analysed this series and available literature reports with regard to complications of the procedure and those encountered during the treatment.
RESULTS: The mean duration of the surgical procedure was 117±45 minutes. Intraoperative complications occurred in 18 cases. Gluteal muscle failure was seen in 34 (43%) of the 74 patients with proximal femoral tumours, and impaired knee extension was noted in 4 (67%) of the 6 patients following resection of the proximal tibia. There were two cases of dislocation following megaprosthetic reconstruction of the hip joint. Impaired wound healing was noted in 7 (5%) patients. Post-operative trophic lesions of the skin were seen in 2 (2%), and peripheral nerve damage in 2 (2%) patients (fibular nerve). Thromboembolic complications were noted in 3 (3%) patients. No aseptic complications, mechanical implant damage or deaths were recorded.
CONCLUSIONS: 1. The most frequently encountered complication following the implantation of a modular prosthesis was muscle failure, which was associated with the extent of the procedure. 2. Aseptic loosening and mechanical implant damage were rare and occurred in the early postoperative period.