Midterm Comparison of Tibial Fixation between Posterior Cruciate-Retaining and Substituting Porous Tantalum Total Knee Arthroplasty: Three-Dimensional Computed Tomography Analysis

Abstract

Porous tantalum tibial component is durable with excellent bone ingrowth, higher knee scores, and long-term survivorship. However, to our knowledge, the effect of posterior cruciate-retaining (CR) and posterior cruciate-substituting (PS) porous tantalum tibial component has not been reported. The aim of the current study was to investigate the prosthetic bone quality between CR porous tantalum tibial component and PS using three-dimensional multi-detector-row computed tomography (3D-MDCT). Porous twenty-two (22) CR total knee arthroplasties and 22 PS received 3D-MDCT at every 6 months up to 5.5 years postoperatively to assess prosthetic bone quality (bone marrow contents/tissue volumes [BMC/TV, mg/cm3]) underneath the pegs of porous tantalum modular tibial component. Clinical outcomes (Knee Society score [KSS], Western Ontario and McMaster Universities (WOMAC), FJS-12, Patella score) were evaluated at a minimum follow-up period of 5.5 years. No statistically significant differences were found in age, gender, body mass index, KSS, and BMC/TV volumes in the proximal tibia between the two groups before total knee arthroplasty (TKA). There were also no significant differences between the CR and PS groups with regard to BMC/TV at every 6 months up to 5.5 years after TKA. At 5.5 years postoperatively, there was no significant difference between the two groups in terms of the KSS, WOMAC, forgotten joint score (FJS-12), and Patella score. The present study revealed that the prosthetic bone quality of the CR porous tantalum tibial component and PS were equivalent at every 6 months up to 5.5 years after TKA. This study reflects level II evidence.

Knee Reconstruction Using 3D‐Printed Porous Tantalum Augment in the Treatment of Charcot Joint

“…However, owing to its limited quantity, it cannot meet the demand for large bone defects. Furthermore, it can lead to donor complications, prolonged operation time, and increased blood loss and infection risk 7 . Allogeneic and heterogeneous bones have weak bone conduction and induction properties, and it is difficult to match the shape of a large bone defect.…”

Diagnostic Value Comparison between Multislice Spiral Computerized Tomography and Magnetic Resonance Imaging under Artificial Intelligence Algorithm in Diagnosing Occult Fractures of the Knee Joint

“…Contrast Media & Molecular Imaging erefore, the value of the projection ray could be worked out by linear interpolation via equation (7) with the parameter (β, c) at the Z R faultage.…”

“…MRI can also show the articular cartilage damage, bone marrow edema, joint effusion, and other complicated lesions through the sagittal, coronal, and cross-sectional upper imaging, thereby increasing the diagnosis rate of OFKJ [6]. Multislice spiral computed tomography (MSCT) has the advantages of easy operation and high accuracy for clinical diagnosis and is a common imaging method for diagnosing occult fractures currently [7]. MSCT adopts the volumetric acquisition method, which can not only scan thin layers, but also increase the scope of a single examination significantly.…”