Biopsychosocial complexity in patients scheduled for elective TKA surgery: A feasibility pilot study with the INTERMED self-assessment questionnaire.

OBJECTIVE: Primary aim; to determine the feasibility of implementation of the INTERMED Self-Assessment (IM-SA) in adult patients scheduled for total knee arthroplasty (TKA). Secondary aim; to measure biopsychosocial complexity, referral to psychiatry or psychology in cases of complexity and to gain insight into the relation between biopsychosocial complexity and length of stay (LOS), method of discharge (MOD) and polypharmacy. METHODS: A feasibility study was conducted with 76 participants in a general hospital in the Netherlands. Feasibility was determined by the number of completed questionnaires, time spent completing the questionnaire and the attitude of staff and patients towards the IM-SA. A cut off point ≥19 on the IM-SA was used to determine the prevalence of biopsychosocial complexity. A case file study was performed to check if referral to psychiatry or psychology had taken place. The Spearman's Rank Correlation Coefficient or Phi was used to determine if there was a relation between biopsychosocial complexity and LOS, MOD and polypharmacy. RESULTS: All participants completed the IM-SA. The average time spent completing the questionnaire was 11.46 min (SD 5.74). The attitude towards the IM-SA was positive. The prevalence of biopsychosocial complexity was 11.84%. Referral to psychiatry or psychology did not take place. There was no relation between complexity and LOS (Spearman's rho (r) = 0.079, p = 0.499, MOD (Phi = 0.169, p = 0.173) and polypharmacy (Phi = 0.007, p = 0.953). CONCLUSION: Biopsychosocial complexity can be identified in TKA patients during the pre-operative phase by using the IM-SA. Implementation of the IM-SA in a Dutch general hospital is feasible.

Ceramic-on-ceramic articulation in press-fit total hip arthroplasty as a potential reason for early failure, what about the survivors: a ten year follow-up.

PURPOSE: In press-fit total hip arthroplasty (THA), primary stability is needed to avoid micromotion and hereby aseptic loosening, the main reason for early revision. High aseptic loosening revision rates of the seleXys TH+ cup (Mathys Medical) with Ceramys ceramic-on-ceramic (CoC) bearing are seen in literature. Since CoC is presumed to overcome long-term wear-related revisions, the reason for early failure of this cup is important to clarify. The aim is to investigate its ten year outcomes and differentiate between potential causes and identify risk factors for aseptic loosening. METHODS: Retrospective screening of a prospectively documented series of 315 THAs was performed. Primary outcome was cumulative incidence of cup revision due to aseptic loosening. Secondary outcomes were component revision and reoperation. Additionally, potential predictive factors for aseptic loosening were evaluated. RESULTS: At the median follow-up of 9.7 years [IQR 4.4; 10.3], 48 TH+ (15.2%) were revised due to aseptic loosening. Competing risk analysis showed a ten year cumulative incidence of cup revision due to aseptic loosening of 15.6% (95% CI 12.0-20.2). Stabilization of early revision rates was observed, following a high rate of respectively 81.3% (n = 39) and 95.8% (n = 46) within the first two and three years. No significant predictive factors for aseptic loosening were found. CONCLUSION: The ten year results of seleXys TH+ cup with Ceramys CoC bearing showed an unacceptable high aseptic loosening rate, which stabilized over time after a high early failure incidence. This could be attributed to a problem with osseointegration during the transition of primary to definitive stability.

The optimal approach in hip hemiarthroplasty: a cohort of 1009 patients.

BACKGROUND: A hip hemiarthroplasty is the treatment of choice for a displaced femoral neck fracture in elderly patients not eligible for total hip arthroplasty. There is continuing debate about the optimal surgical approach for this operation, with the most commonly used approaches being posterior and lateral. OBJECTIVE: To compare the outcomes of the posterior and the lateral approaches in patients with a displaced femoral neck fracture treated by hemiarthroplasty. METHOD: A retrospective study was carried out in two high-volume teaching hospitals in the Netherlands. Electronic patient records were searched for patient characteristics, the operative approach and adverse outcomes. RESULTS: A total of 1009 patients with a median age of 86 years were included. The posterior approach was used in 51.1% of patients. There were no differences in surgical site infection and periprosthetic fracture rates. There was a trend towards more dislocations in the posterior approach (2.9% vs. 1.4% with an OR of 2.1, 95% CI 0.8-5.1). An uncemented hemiprosthesis was used in 62.7% of patients. Deep surgical site infections and periprosthetic fractures occurred more often in the uncemented group (OR 2.9 and 7.4, respectively). CONCLUSION: No differences in adverse outcomes between both approaches could be shown. This study did confirm the relatively high incidence of post-operative complications in uncemented prostheses. Therefore, the cemented prosthesis should be the treatment of choice, with the approach dependent on surgeon preference and experience.