Best practices for centers of excellence in addressing periprosthetic joint infection

Current Concepts on the Clinical and Economic Impact of Periprosthetic Joint Infections

Total joint arthroplasty (TJA) is a common procedure performed throughout the entire world in hopes of alleviating debilitating hip or knee pain. The projected number of TJAs performed in the United States alone is projected to exceed 1.9 million by 2030 and 5 million by 2040. With the significant increase in TJA performed, more periprosthetic joint infections (PJIs) are likely to be encountered. PJIs are a devastating complication of TJA. The economic and clinical burden must be understood and respected to minimize occurrence and allow optimal patient outcomes.

A Pilot Study Using a Standardized Method of Measuring Distress Demonstrates Higher Levels in Septic Revisions

Background

Combined Orthopaedic Infectious Disease Clinics facilitate care for prosthetic joint infection (PJI) patients similar to multidisciplinary care in cancer centers. The National Comprehensive Cancer Network developed a standardized distress thermometer (DT) to measure distress in cancer patients. We propose using this tool to assess distress in PJI patients.

Methods

In this pilot study, a retrospective review of patients treated in our combined clinic over 2 years was conducted. In addition to providing information surrounding their treatment, patients completed a questionnaire and DT, adapted with permission from the National Comprehensive Cancer Network. DT scores were compared to a chronologically collected matched aseptic control group.

Results

There were 122 patients in the septic group and 40 patients in the aseptic group. On a scale of 0-10 (10, the highest level of distress), the septic group reported a mean DT score of 6.18 (±3.2), which was significantly higher than the aseptic mean score of 3.33 (±2.06) [P < .0001]. Over 75% of patients in the septic group reported a DT score ≥4, the cutoff used in most cancer centers to warrant additional support. Twenty-one percent of the septic group (26/122) reported extreme distress (defined as a score ≥10) compared to 0/40 of aseptic patients.

Conclusions

Patients treated for PJI experience significantly higher levels of distress compared to aseptic revision patients. More attention is needed to measure and clinically address distress. Improved screening for distress would allow us to provide more comprehensive care and possibly improve compliance, outcomes, and resources available for the treatment of PJI patients.

Total Joint Arthroplasty in Patients With an Implanted Left Ventricular Assist Device

Left ventricular assist devices (LVADs) may be used as bridge therapy or destination therapy in heart failure patients. Total joint arthroplasty may improve the functional status of patients limited by arthritis. This retrospective case series evaluated patients with an implanted LVAD who underwent a total joint arthroplasty at 1 institution from 2012 to present. Five patients underwent 12 surgeries with 7 primary arthroplasties and 5 revisions. Their mortality, length of stay, coagulopathic events, incidence of infection or revision arthroplasty, and heart transplantation were evaluated, and is the largest study to date of this population. Two patients expired from thrombotic events while 3 progressed to heart transplantation. Joint arthroplasty is feasible in patients with an implanted LVAD with expected risk and perioperative multidisciplinary collaboration.

Two-Stage Primary Arthroplasty of Native Hips and Knees That Had Previously Failed Treatment for Septic Arthritis: A Single-Center Experience

Background

Patients with a history of degenerative joint disease secondary to an acute or remote episode of septic arthritis of the native knee or hip present a unique challenge for the orthopaedic surgeon. This study describes our experience with two-stage primary arthroplasty for such patients.

Methods

We reviewed 42 patients with a history of septic arthritis treated with two-stage primary arthroplasty between 2008 and 2018. Patients were evaluated using modified Harris Hip Score, Knee Society Score (KSS), and KSS functional component (KSSF). Paired t-tests were used to compare changes for continuous variables within cohorts. Multivariate linear and logistic regression models were constructed to determine predictors of outcomes and complications.

Results

At a mean of 3.3-year follow-up, there were 14 (33.3%) complications and the infection cure rate was 95.2%. On average, patients improved in the modified Harris Hip Score (42.9 ± 11.8 vs 83.3 ± 11.1, P < .001), KSS (35.9 ± 16.9 vs 80.1 ± 16.6, P < .001), KSSF (38.0 ± 15.1 vs 71.5 ± 24.0, P < .001), knee flexion (90.9 ± 14.9 vs 100.5 ± 17.1), and hip flexion (73.8 ± 21.2 vs 102.1 ± 11.8, P < .001). Age (β: -0.78, P = .004) was independently associated with lower Harris Hip Score in the hip cohort. There were no independent predictors of the KSS or KSSF. The erythrocyte sedimentation rate (odds ratio: 1.07, P = .043) and C-reactive protein (odds ratio: 1.43, P = .018) at stage 2 were independently associated with a higher likelihood of complications at the final follow-up.

Conclusion

Patients with a history of native septic arthritis of the hip and knee, and secondary end-stage degenerative joint disease, showed significant postoperative improvements and a high rate of complications after two-stage primary total joint arthroplasty. Despite improvements, some patients may necessitate a third operation because of the incidence of reinfection and spacer exchange. This information should be used to counsel patients who present with this challenging clinical scenario.