98%
921
2 minutes
20
Case: An 18-year-old woman with osteosarcoma of the left distal femur underwent resection and limb-salvage surgery with compressive osseointegration endoprosthetic reconstruction and experienced tumor recurrence 1 year after index surgery. A transfemoral amputation was performed preserving the existing compressive osseointegration device, and limb lengthening was achieved using intercalary and distal femoral segments. 3.5 years after amputation and lengthening, the implant remains well integrated and the patient is ambulatory.
Conclusion: Compressive osseointegration with distal femoral endoprosthesis is a viable option for adding length and lever arm mechanics in patients with short stump above knee amputations.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.2106/JBJS.CC.24.00548 | DOI Listing |
Int J Implant Dent
August 2025
Department of Oral and Maxillofacial Biology, Evaluation of Orofacial Function, Graduate School of Oral Medicine, Matsumoto Dental University, 1780 Gobara, Hirooka, Shiojiri, Nagano, 399-0781, Japan.
Background: Implant placement is a critical step for achieving primary stability. During this process, a compressive force, referred to as an "insertion load," is applied through a handpiece or manual driver. However, the influence of the insertion load has not been quantitatively investigated.
View Article and Find Full Text PDFFront Oral Health
July 2025
Medical Laboratory Department, College of Health and Medical Technology, Sulaimani Polytechnic University, Sulaymaniyah, Iraq.
Background: Implant stability plays a key role in establishing implant osseointegration and is a crucial factor in determining the appropriate timing for functional loading with a fixed prosthesis. This study aims to investigate the primary and secondary stability of a one-piece compressive conometric implant system in the posterior upper and lower jaws.
Materials And Methods: A total of 46 compressive one-piece dental implants (DIs) from ROOTT Trade Company were placed in the upper and lower jaws.
Biomater Adv
December 2025
Guangdong Engineering Research Center of Natural Products and New Drugs, Guangdong Provincial University Engineering Technology Research Center of Natural Products and Drugs, Guangdong Pharmaceutical University, Guangzhou 510006, China. Electronic address:
Bone defects from trauma, infection, and tumour resection are a growing clinical challenge due to global population aging. Current treatments like autologous and allogeneic bone grafting have limitations. This study focused on optimizing ion-doped α-tricalcium phosphate (α-TCP) preparation and developing calcium phosphate cement (CPC) with superior physicochemical and biological properties.
View Article and Find Full Text PDFMedicina (Kaunas)
June 2025
Maxillofacial Surgery and Dental Unit, Fondazione IRCCS Cà Granda Policlinico, 20112 Milan, Italy.
Implant primary stability is a prerequisite for obtaining osseointegration and clinical success. Insertion torque (IT) is measured during implant placement and is expressed in Ncm. It represents the quantification of the frictional force experienced by the implant as it progresses apically through a rotational motion along its axis.
View Article and Find Full Text PDFBioact Mater
November 2025
Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, 999077, China.
Metallic bone screws are clinically used to fix the fractured bone fragments in bone defect treatment; yet they present compromised therapeutic efficacy due to poor osseointegration and tissue support. Here, we develop a novel thermoresponsive shape memory (SMP) bone screw with osteogenesis-angiogenesis coupling for enhanced bone regeneration. The SMP bone screws are prepared by die casting of shape memory polyurethane/hydroxyapatite (PU/HA) composite, coated with L-arginine (Arg) and calcium ions (Ca).
View Article and Find Full Text PDF