To retrospectively evaluate biological and technical complication rates of implant-supported fixed complete dentures (IFCDs) in edentulous jaws and to identify factors associated with complications over long-term follow-up. Between 2003 and 2023, 91 IFCDs supported by 498 implants were placed in 72 patients. Mean observation period was 6.8 years (0.5-17). Biological and technical complications were compared between materials. Time until first complication was estimated using Kaplan-Meier analysis and risk factors for recurrent complications were assessed through multivariable Andersen-Gill Cox regression. Seven IFCDs failed, corresponding to a cumulative overall IFCD survival of 92.3%. Twenty-one of 498 implants (4.2%) were explanted. Overall prosthesis survival of resin veneered (RV) and ceramic veneered (CV) IFCDs did not differ (p = 0.85), whereas veneer fracture-free survival was significantly higher for CV IFCDs (p = 0.0094). In total, 169 complications were recorded, including recurrent events, whereas 49.5% of prostheses remained complication-free. Technical complications predominated, with veneer fractures representing the most frequent event. Biological complications such as peri-implantitis and implant loss occurred less frequently. Compared to base metal alloy-ceramic IFCDs, titanium-resin IFCDs exhibited a significantly higher overall complication risk (HR 4.25, p = 0.0015), particularly for veneer fractures (HR 7.11, p = 0.0029). Within the limitations of this long-term retrospective cohort study, IFCDs demonstrated high prosthesis and implant survival rates, but a considerable number of predominantly technical complications. The choice of framework and veneering material appears to influence long-term complication risk and should be carefully considered during treatment planning.

Patient-specific BIO-RSA (bony increased-offset reverse shoulder arthroplasty) for glenoid dysplasia (type C) osteoarthritis.

Analyses of long-term results after mobile-bearing total ankle arthroplasty (TAA) in ankles with preoperative moderate to severe varus deformity with adequate sample sizes remain limited. Because preoperative moderate to severe varus alignment may influence implant survival and functional outcomes, clarifying its long-term impact is important. (1) Do the clinical and radiologic outcomes of mobile-bearing TAA differ between ankles with preoperative neutral alignment and those with moderate to severe varus alignment? (2) What are the 5- and 10-year prosthesis survivorship, survivorship free from any revision including polyethylene exchange, and survivorship free from any unplanned reoperation in each group after mobile-bearing TAA? (3) Did the incidence of asymmetric polyethylene wear differ between the groups? Between September 2004 and May 2019, a single nondeveloper surgeon performed 417 TAAs. All procedures were performed using a single-design mobile-bearing device. The general indications for TAA were painful end-stage ankle arthritis. Of the 382 eligible ankles, 44% (168 ankles) were in patients with varus ankles (a preoperative coronal tibiotalar ankle ≥ 10° of varus) and 56% (214 ankles) were in neutral ankles (defined as < 10° of varus or valgus). Sixty-one percent (103 of 168) of the varus group and 61% (131 of 214) of the neutral group were available for follow-up with complete radiographic imaging and patient-reported outcome scores at a minimum of 5 years, and these patients were the focus of this retrospective, comparative study. The median (range) follow-up time was 123 months (60 to 230). The groups were similar with respect to age (63 versus 64 years; p = 0.34), gender (53% versus 44% men; p = 0.19), BMI (25.1 versus 25.5 kg/m2; p = 0.58), and follow-up duration (124 versus 116 months; p = 0.09). Although posttraumatic osteoarthritis was more common in the varus group and inflammatory arthritis in the neutral group, baseline demographic characteristics were otherwise comparable. Additional procedures to correct coronal alignment were performed at the discretion of the surgeon when necessary. Clinical outcomes were evaluated using VAS pain scores, Ankle Osteoarthritis Scale pain and disability subscores, as well as ankle ROM. Radiologic assessment included measurements of the postoperative coronal tibiotalar angle and development of asymmetric polyethylene inlay wear. CT scans with metal artifact reduction were performed to evaluate osteolysis. Survivorship was analyzed using the Kaplan-Meier method at 5 and 10 years for three endpoints: (1) revision or removal of a metal component, (2) revision of any component (including polyethylene exchange), and (3) any unplanned reoperation. There were no clinically important differences in patient-reported outcome scores between the neutral and varus groups at a minimum of 5-year follow-up. The varus group had greater preoperative varus deformity (3° ± 4° versus 18° ± 6°, mean difference 15° [95% confidence interval (CI) 14° to 17°]; p < 0.001). Postoperative coronal plane alignment differed between groups, with the varus group demonstrating 1° more residual varus (2° ± 2° versus 3° ± 2°, mean difference 1° [95% CI 0° to 1°]; p = 0.01). Survivorship free from metal component revision did not differ between the neutral and varus groups at a minimum of 10-year follow-up (93.7% [95% CI 89.9% to 99.4%] versus 94.2% [95% CI 89.8% to 98.9%]; p = 0.88). Survivorship free from all-kind revision (including polyethylene exchange) did not differ between the neutral and varus groups at a minimum of 10-year follow-up (68.7% [95% CI 60.3% to 78.3%] versus 75.1% [95% CI 66.3% to 85.1%]; p = 0.19). Survivorship free from any unplanned reoperation did not differ between the neutral and varus groups at a minimum of 10-year follow-up (63.4% [95% CI 54.8% to 73.3%] versus 63.1% [95% CI 53.6% to 74.3%]; p = 0.94). The varus group had a higher proportion of patients who developed asymmetric polyethylene inlay wear than did the neutral group (42% [43 of 103] versus 17% [22 of 131]; p < 0.001). In patients with moderate to severe preoperative varus deformity treated with this mobile-bearing TAA, we found no difference in patient-reported outcomes and implant survivorship compared with neutral ankles. However, varus ankles demonstrated a higher proportion of asymmetric polyethylene inlay wear, which may increase the risk of subsequent revision. Future studies should determine which patterns of varus deformity and residual malalignment are most strongly associated with edge-loading and how surgical correction strategies may mitigate this risk. Level III, therapeutic study.

This prospective clinical study with 1-year follow-up aimed to evaluate marginal bone remodeling, survival, and success rates of zygomatic implants featuring a conical internal prosthetic connection. Sixteen edentulous patients with atrophic maxillae received implant-supported complete-arch fixed dental prosthesis supported by 36 zygomatic and 28 conventional implants. Marginal bone levels were assessed via intraoral radiographs (mesial/distal) and cone beam computed tomography (CBCT) (buccal/palatal) at baseline, 6 months (T6), and 12 months (T12) after loading, using standardized imaging protocols. Patient satisfaction was evaluated by OHIP-EDENT questionnaire. Finally, implant and prosthesis success and survival rates were registered. Marginal bone level remained stable in zygomatic implants over 12months. In contrast, conventional implants showed higher initial bone level (1.15±1.44; p=0.02), with significant reductions at 6 months (0.78±0.90; p=0.01) and 12 months (0.24±0.97; p<0.001). Both implant types achieved 100% survival and success in 12 months. No complications were reported in either group. Prosthesis survival was 100% in 12 months, while success rates were 56.25% in 6 months and 81.25% at 12 months. OHIP-EDENT score significantly decreased from 17.44±7.41 at baseline to 1.94±3.34 in 6 months (p<0.001), remaining low at 2.63±4.06 in 12 months, indicating sustained patient satisfaction. Zygomatic implants with conical prosthetic connections demonstrate stable marginal bone levels and high survival and success rates over 12 months. Both implant types exhibited favorable bone remodeling when using a morse tapper connection.

Background: Surgical management of adult patients with post-dysplastic coxarthrosis using total hip arthroplasty is technically demanding and carries an increased risk of complications. In cases of high iliac dislocation classified as Crowe type IV, restoring the acetabular component to the anatomical hip centre often requires femoral shortening osteotomy to enable safe reduction in the prosthetic joint. Nevertheless, long-term evidence on functional outcomes and prosthesis survival with this approach is limited. Methods: A retrospective cohort study included 19 patients with 22 cases of Crowe type IV post-dysplastic hip osteoarthritis treated with uncemented total hip arthroplasty (Pinnacle/S-ROM, DePuy, Warsaw, IN, USA) combined with transverse subtrochanteric femoral shortening osteotomy. Patients underwent serial clinical follow-up, including assessment of range of motion, measurement of limb-length discrepancy, and functional evaluation using the Harris Hip Score and the WOMAC questionnaire. Radiological assessment included evaluation of osteotomy union, implant positioning, and osteolysis on standardized radiographs. Vertical distances of the centre of rotation (CR), the tip of the greater trochanter (GT), and the tip of the lesser trochanter (LT) from both reference lines were measured bilaterally, and inter-side differences were calculated. The reference lines consisted of the line connecting the inferior margins of the ischial bones and the teardrop (TD) line. Results: All osteotomies united at a mean of 5.57 months, with a mean follow-up of 129 months. Mean limb-length discrepancy decreased from 5.27 cm to 1.5 cm, and mean hip flexion improved from 82.9° to 106°. Functional outcomes improved significantly, with mean WOMAC increasing from 55.4 to 80.1 (p < 0.001) and mean Harris Hip Score from 49.8 to 84.66 at up to 3 years of follow-up (p < 0.001). Osteotomy length correlated strongly with lesser trochanter-teardrop distance (p = 0.00000048). Complications included distal femoral fissure (27.3%) and revision (18%), with no infection or permanent neurological deficit. Conclusions: Total hip arthroplasty combined with subtrochanteric femoral shortening osteotomy for Crowe type IV post-dysplastic hip osteoarthritis appears to be a feasible and effective procedure in an experienced centre, providing reliable osteotomy healing and significant early functional improvement that is sustained over time. Limb-length discrepancy was reduced and satisfactory biomechanical restoration was achieved, with an acceptable complication profile and implant survival of 81.3% at long-term follow-up. The LT-TD parameter was identified as a potential predictor of osteotomy length, enabling the proposal of a preoperative planning equation. However, given the limited sample size and lack of validation, these findings should be interpreted cautiously. Further studies are needed to confirm their broader applicability.

Zygomatic implants as a solution for severe maxillary atrophy: a retrospective analysis of the original Brånemark scheme vs the quad zygoma scheme.

Prosthetic complications of implant-supported complete arch prostheses: An umbrella review of systematic reviews.

Evaluation of the 5-year clinical efficacy of cross-arch fixed dental prostheses as periodontal splints on periodontal tissue stability.

Total elbow arthroplasty (TEA) is a commonly performed surgical technique for the management of elbow disorders. The Coonrad-Morrey (CM) prosthesis is the most commonly used prosthesis in TEA. The study from Chinese cohorts remains limited, particularly regarding differences between patients with and without RA. Therefore, the purpose of this study was to evaluate the medium- to long-term clinical outcomes using the CM prosthesis in a Chinese cohort, and to compare clinical outcomes between patients with and without RA. A retrospective cohort study was conducted involving 74 patients (75 elbows) who underwent TEA using CM prostheses between March 2015 and February 2019. All patients were followed up for a minimum of 5 years (mean follow-up: 83.4 months) and were assessed for elbow range of motion (ROM), Mayo Elbow Performance Score (MEPS), Quick-Disabilities of the Arm, Shoulder and Hand (Quick-DASH) score, pain, complications, and revision surgeries. Kaplan-Meier survivorship analysis was conducted. The differences between patients with and without rheumatoid arthritis (RA) were compared in the subgroup analysis. At the final follow-up, the average flexion-extension ROM was 105.3° ± 33.6°. The mean MEPS was 85.5 ± 14.3, with a good-to-excellent rate of 81.3%. The mean Quick-DASH score was 30.8 ± 18.1. A total of 26 complications (26/75, 34.7%) were observed in 22 elbows (22/75, 29.3%). Nine elbows (9/75, 12.0%) underwent reoperation. The revision-free rates were 98.7% at 1 year, 94.7% at 2 years, and 90.7% at 5 years. There were no significant differences in elbow function or revision-free rate between patients with and without RA. TEA using CM prosthesis in Chinese patients can achieve favorable functional outcomes regardless of RA status, with a high 5-year prosthesis survival rate. However, a larger sample size and a longer follow-up period are still required.

To evaluate the prosthetic outcomes of implant-assisted maxillary full-arch restorations with ≥ 3 years of follow-up. A systematic electronic literature search was conducted in five databases to identify randomised controlled trials and prospective clinical studies involving patients who received full-arch rehabilitation in the maxilla. The primary outcome was prosthesis loss; secondary outcomes included complication-free prosthesis survival, complication-free implant survival, implant loss, technical complications, patient-reported outcome measures (PROMS), and marginal bone loss. Meta-analyses of proportions using random-effects models were performed to estimate pooled rates of prosthetic survival, success, and complications. A total of 20 studies involving 913 patients were included. Among these, 542 patients received fixed prostheses and 371 received removable prostheses. Most of the studies had an observation period in the range of 3 to 6 years, with only two studies (overdentures) reaching 10 years. Overall prosthesis loss was 4.6% (95% CI: 1.2%-10.1%) and complication-free prosthesis survival was 61.9% (95% CI: 48.4%-74.5%). Overall complication-free implant survival was 46.5% and technical complications were 62.9%. Pooled implant loss was 5.5% after adjusting for clustering effects and mean marginal bone loss was < 0.8 mm. Subgroup analysis of fixed and removable prosthesis over a similar observation period revealed similar outcomes. Implant-assisted maxillary full-arch restorations have low rates of prosthesis and implant loss. However, complication-free survival is moderate, underscoring the importance of maintenance and patient education.

BackgroundTotal hip arthroplasty is a highly successful procedure for treating hip arthritis, improving patients’ pain, function, and quality of life (QoL). Scarce publications on total hip arthroplasty performance using Brazilian-manufactured materials report results comparable to those from other countries.ObjectiveThe aim of this study is to compare the clinical, radiographic, functional, pain, and QoL outcomes of patients who underwent surgery with a national hybrid prosthesis (with femoral cementation) versus patients who underwent surgery with a national uncemented prosthesis.MethodsThis study is a single-center, single-surgeon, single-approach, pragmatic, double-blinded, and prospective randomized trial. A total of 120 patients will be enrolled and randomly allocated in a 1:1 ratio to 2 groups: the hybrid group and the uncemented group. The incidence of complications (during and after surgery) and the restoration of normal anatomical parameters on postoperative radiographs will be assessed using radiographic parameters. Participants’ QoL, joint mobility, function, and satisfaction will be evaluated using the 12-Item Short Form Health Survey version 2 questionnaire, hip range of motion, the Harris Hip Score, and a numeric rating scale. Prosthesis survival will be analyzed using the annual revision surgery rate from 1 to 5 years, and up to 10 years.ResultsThe project did not receive external funding. Data collection began in October 2024 and is ongoing, with completion expected in December 2029. As of April 2025, 72 participants have been enrolled. Preliminary data analysis has been initiated and is ongoing. The first results are expected to be published in the first half of 2026.ConclusionsThis study is a pragmatic clinical trial that uses blinding to evaluate national implants for both hybrid and uncemented hip arthroplasty. Successful completion of this study may provide clinical evidence on the performance of national implants and identify a preferred implant construct (hybrid or uncemented), if any, for hip replacement in Brazil.

Edentulism has significant functional and psychosocial consequences, and full-arch implant-supported fixed dental prostheses (FDPs) have become one of the most reliable rehabilitation options. However, long-term outcomes of prostheses due to prosthesis-related and patient-related risk factors remain limited. Thus, this study aimed to evaluate the long-term clinical performance, rates of complication types of full-arch implant-supported FDPs over a 4-10-year follow-up period. Additionally, the potential influence of patient- and prostheses- related risk factors—particularly bruxism, opposing arch type, retention system, and cantilever configuration—was assessed. This retrospective study included 24 patients (13 males, 11 females; aged 39–77) treated between 2015 and 2020 with complete or single-arch edentulism received full-arch implant-supported FDPs. A total of 180 implants were placed in 34 edentulous arches, 24 of the implants were angled in posterior regions. Eighteen arches were restored with cement-retained prostheses, and 16 with screw-retained prostheses. Standardized clinical and radiographic examinations were performed at follow-up visits to record periimplant conditions, marginal bone levels and prosthetic complications. Outcomes were documented descriptively at the prosthesis and patient levels. However, the cumulative prosthesis survival probability at 5 and 10 years were 80% and 60%, respectively. The cumulative success probability (complication-free) was 61.8% at 1 year, 26.5% at 3 years, and 14.7% at 5 years. By the 6th year, all prostheses (100%) had experienced at least one minor complication, with a median complication-free time of 3 years. “Probable” bruxism was significantly associated with chipping (p = 0.049) and a higher rate of minor complications in the mandible (p = 0.015). However, no significant correlation was found between cantilever length or prosthetic material and marginal bone loss (p > 0.05). Full-arch implant-supported FDPs demonstrated stable clinical performance over 4–10 years, with manageable technical complications. The present study contributes to the existing literature by providing long-term, single-center data with standardized follow-up and by presenting detailed implant-, prosthesis-, and patient-level complication profiles. Bruxism may increase the likelihood of certain technical complications, though further studies with larger samples are required to confirm. Not applicable.

Despite the increasing use of monolithic zirconia for complete arch implant-supported prostheses, evidence regarding their long-term survival, complication rates, and clinical predictability remains limited and heterogeneous. The purpose of this systematic review was to evaluate the survival and overall performance of monolithic zirconia complete arch implant-supported prostheses. An electronic search was conducted in 9 databases following Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines and registered on PROSPERO (CRD: 42025640173). Meta-analyses were performed using random-effects models (α=.05). Subgroup analyses evaluated the pooled proportion of prosthetic failures, implant longevity, and technical complications. The risk of bias was assessed using the Risk of Bias in Non-randomized Studies of Interventions (ROBINS-I) tool, and the certainty of evidence was graded according to the Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) approach. Thirteen studies comprising 2841 prostheses and 3940 implants were included in this systematic review. The pooled proportion rate of monolithic zirconia complete arch prostheses in function at the last follow-up (12 to 62 months) was 99% (95% confidence interval [CI]): 97% to 100%; I²=72%, while implant longevity reached 100% (95% CI: 99% to 100%; I²=75%). The pooled technical complication rate was 14% (95% CI: 4% to 27%; I²=96%). Subgroup analyses revealed higher complication rates in veneered designs (up to 27%) compared with monolithic configurations (1% to 3%). Most studies presented a moderate to serious risk of bias according to ROBINS-I, mainly due to retrospective designs and confounding. The certainty of evidence was rated as low by GRADE, primarily because of methodological limitations and heterogeneity. Monolithic zirconia complete arch implant-supported prostheses demonstrated high cumulative proportions of prostheses remaining in function and low rates of technical and biological complications within the reported follow-up periods.

Comparison of mechanical complications between metal-ceramic and monolithic zirconia implant-supported prostheses: A retrospective split-mouth study.

The longevity of total hip arthroplasty (THA) largely depends on adequate bone formation around the implant. This study used [18F]-fluoride positron emission tomography combined with computed tomography (F-PET/CT) to evaluate skeletal metabolism in the bone surrounding the acetabular cup and to compare the metabolic activity in the periprosthetic regions between cups with 2 different surfaces. Twenty-eight Swedish patients (15 females) with a mean age of 61.3 years were randomly assigned to receive an uncemented cup with either a Trabecular Titanium (TT) surface or a hydroxyapatite (HA) coating. The acetabular bone region surrounding the cup was divided into 9 regions of interest (ROIs). All patients were assessed with use of radiographs and clinical scoring at 36 weeks of follow-up and with use of F-PET/CT at 4, 16, and 36 weeks postoperatively. F-PET/CT scans demonstrated 17% higher levels of metabolic activity indicating osseointegration in the TT group compared with the HA group at 4 weeks postoperatively. Additionally, both groups had higher standardized uptake values (SUVs) compared with the healthy reference acetabulum groups at 4 and 16 weeks postoperatively. A detailed analysis of bone growth on the implant surface revealed that the initial healing phase involves increased mineral accumulation for both TT and HA cups. These findings provide valuable insights into the secondary stabilization of implants, which is critical for prosthesis survival. Prognostic Level II. See Instructions for Authors for a complete description of levels of evidence.

Objectives: To analyze biomechanical factors influencing failure of fixed partial dentures (FPDs), focusing on stress distribution, strain behavior, and material fatigue. Methods: A structured literature review was conducted including in vitro studies, finite element analyses, and clinical investigations evaluating connector design, span length, occlusal loading, material properties, and prosthesis longevity. Results: High stress concentrations were frequently observed in connector and marginal regions, particularly under non-axial loading. Long-span prostheses demonstrated increased flexural stress and fatigue-related failures. CAD/CAM fabrication techniques and monolithic zirconia materials showed improved stress distribution and fracture resistance. Conclusions: Biomechanical planning plays a critical role in the long-term success of FPDs. Optimizing prosthesis design, material selection, and occlusal load distribution significantly reduces mechanical failure risk.

Obesity is awell-recognized risk factor for knee osteoarthritis and contributes to the increasing demand for total knee arthroplasty (TKA). Excess body weight alters gait mechanics, increases joint loading, and accelerates degeneration, potentially compromising outcomes. Although cruciate-retaining (CR) and posterior-stabilized (PS) prostheses are widely used, their comparative outcomes in obese patients remain controversial. This study aimed to compare outcomes of CR versus PS prostheses in obese patients undergoing primary TKA. Aretrospective cohort study included 79knees from 56 obese female patients (BMI > 30 kg/m2) who underwent cemented primary TKA between 2011 and 2017. All procedures were performed by asingle surgeon using the Vanguard® Knee System. Patients were grouped according to implant design. Clinical outcomes were assessed using the visual analogue scale (VAS), Lysholm knee score, and Knee Society score (KSS). Radiological evaluation followed the Knee Society roentgenographic system. The mean follow-up was 41.3 ± 20.8 months. Both groups showed significant postoperative improvement in all clinical scores (p < 0.01). The PS group achieved greater postoperative range of motion (ROM) (p = 0.035) and higher KSS-knee scores (p = 0.022). No significant differences were observed in VAS, Lysholm, or KSS-function scores. Radiolucent lines were noted in 8.9% of knees without migration or loosening. Prosthesis survival was 100% in both groups. Both CR and PS implants yield satisfactory outcomes in obese patients undergoing TKA. PS designs may provide superior range of motion and functional recovery. Further prospective studies are needed to confirm these findings.

The functionality of the hip joint is primarily determined by the anatomical relationship between acetabulum and femur. Impairment of this relationship can lead to diseases such as femoroacetabular impingement and hip osteoarthritis. In patients undergoing total hip arthroplasty, accurate placement of the acetabular and femoral components in accordance with native 3-dimensional anatomy (3D) is crucial for obtaining prosthesis stability and survival, also for preventing postoperative complications such as wear, dislocation and osteolysis. Therefore, 3D determination of native anatomical features of the hip joint is highly important. A total of 100 adults were randomly selected. Right femur and acetabulum were segmented using MIMICS program. 2D and 3D measurements of femoral anteversion according to posterior condylar and transepicondylar axis, acetabular anteversion, acetabular inclination and combined anteversion were determined. The differences between gender groups and the correlations of two- and three-dimensional measurement results were evaluated. According to 2D and 3D measurements, statistically significant differences were observed between gender groups in all parameters except for 2D acetabular inclination. A very strong correlation was observed between 3D femoral anteversion measurements performed using the posterior condylar axis and transepicondylar axis. Our findings revealed statistically significant differences between 2D and 3D measurements in most parameters, which have clinical relevance. A very strong correlation between femoral anteversion measurements obtained using the transepicondylar and posterior condylar axes supports the intraoperative use of the transepicondylar axis reliably. We believe the data obtained from our study will contribute to understand the 3-dimensional native anatomy of the hip joint.

Immediate full-arch mandibular rehabilitation supported by four implants: A retrospective study with 20 to 25 years of follow-up.

Total knee arthroplasty (TKA) offers significant relief for advanced knee osteoarthritis. With an aging population, TKA procedures are increasing, leading to a higher demand for revision surgeries. Rotating-hinge knee (RHK) prostheses have emerged as a solution for complex revisions, but the long-term durability of RHK prostheses and their effectiveness in infection-related revisions remain controversial. Therefore, this study aimed to evaluate the mid- to long-term clinical and survivorship outcomes of a single-design rotating hinge knee (SDRHK) system in revision TKA, comparing patients revised for infection with those revised for noninfectious causes. This retrospective study analyzed 110 patients who underwent revision total knee arthroplasty (rTKA) with a SDRHK system from 2004 to 2023, with an average follow-up of 11.3 years. Patients were divided into an infection group (n = 51) and a noninfection group (n = 59) for comparative analysis. Preoperative diagnostic arthrocentesis was performed to evaluate synovial cell count, leukocyte differential, and microorganisms. Functional outcomes were assessed using Hospital for Special Surgery (HSS) knee score, range of motion (ROM), and Knee Society Score (KSS). Study outcomes included prosthesis survival, mechanical failure, and complications. Data were analyzed using Kaplan-Meier survival analysis, t test, and χ 2 test, with statistical significance set at p ≤ 0.05. The infection group experienced symptom onset significantly earlier than the noninfection group (18.8 vs. 50 months, p = 0.003), had a shorter initial prosthesis lifespan (32.7 vs. 66.8 months, p = 0.001), and underwent more surgeries before revision (2.6 vs. 1.6, p = 0.004). Microbiological analysis indicated that coagulase-negative staphylococci and Staphylococcus aureus were the most commonly isolated pathogens. The 5- and 10-year prosthesis survival rates in the infection group were 78.4% and 71%, respectively, while those in the noninfection group were 83.1% and 74.6%. At the latest follow-up, survival rates for the two groups were 68.6% and 71.2%, showing similar outcomes. Functional scores in both groups improved postoperatively, with no significant differences in HSS, ROM, or KSS scores between the groups. This study highlights the important value of RHK prostheses in the treatment of prosthetic joint infection (PJI) after TKA. Despite challenges such as earlier symptom onset, shorter prosthesis lifespan, and higher complication rates in the infection group, their functional outcomes and prosthesis survival rates were comparable to those of the noninfection group, further validating the effectiveness of RHK prostheses. These findings provide useful references for clinical management of PJI and underscore the importance of continued innovation in revision techniques.