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Related Experiment Video

Updated: Feb 4, 2026

Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty
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[Changes in Cognitive Functions after Total Hip Arthroplasty].

T Tomáš1, A Pokorná, P Janíček

  • 1I. ortopedická klinika Fakultní nemocnice u sv. Anny v Brně a Lékařské fakulty Masarykovy univerzity, Brno.

Acta Chirurgiae Orthopaedicae Et Traumatologiae Cechoslovaca
|October 9, 2018
PubMed
Summary
This summary is machine-generated.

Postoperative delirium after total hip arthroplasty is common and linked to worse outcomes. The Abbreviated Mental Test Score effectively detects short-term cognitive changes, aiding in prevention and early identification of risk factors.

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Area of Science:

  • Orthopedic Surgery
  • Geriatric Medicine
  • Neuroscience

Background:

  • Postoperative delirium is a frequent complication following total hip arthroplasty (THA), occurring in 10-50% of patients.
  • Delirium significantly increases mortality, hospital stay duration, and leads to poorer functional outcomes.
  • Despite evidence for preventive and treatment strategies, inadequate attention is given to this complication.

Purpose of the Study:

  • To determine the incidence of cognitive function impairment post-THA.
  • To identify factors influencing cognitive changes after THA.
  • To develop practice guidelines for preventing and early detecting cognitive changes and delirium in THA patients.

Main Methods:

  • Prospective observational descriptive study involving 116 patients (mean age 71.16 years) undergoing THA.
  • Evaluated parameters included anesthesia type, surgery duration, analgesia, O2 saturation, hemoglobin, ionogram, temperature, comorbidities, polypharmacy, abuse, and Activities of Daily Living (ADL).
  • Cognitive function assessed using Mini Mental State Examination (MMSE), Abbreviated Mental Test Score (AMTS), Recall and naming test, and ADL.

Main Results:

  • Significant correlations found between cognitive function changes and O2 saturation, ion levels, elevated temperature, age, diabetes, polypharmacy, and ADL scores.
  • The Abbreviated Mental Test Score (AMTS) proved to be the most sensitive tool for detecting short-term cognitive changes.
  • Statistically significant dependencies were observed for most monitored parameters, with some exceptions noted for specific tests and time points (e.g., hemoglobin, anesthesia type).

Conclusions:

  • The Abbreviated Mental Test Score (AMTS) is a highly sensitive test for detecting short-term cognitive changes post-THA.
  • Identified risk factors and their correlations with cognitive impairment provide a basis for prevention and early detection strategies.
  • Developed guidelines aim to improve the care of patients undergoing THA by focusing on cognitive function monitoring and intervention.