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Does physical and psychological state before surgery impact the length of hospital stay and pain medication use after total knee replacement?

The correlation between pre-operative function and psychological state on post-operative outcomes undergoing total knee arthroplasty.

Status
Completed
Phases
Unknown
Study type
Observational
Source
ANZCTR
Registry ID
ACTRN12624001084572
Enrollment
84
Registered
2024-09-06
Start date
2024-10-01
Completion date
2025-12-01
Last updated
2026-03-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

Within Gold Coast Health all patients the average length of stay for patients who have their knee joint replaced (total knee arthroplasty) is between three to five days, however, variation exists. During the stay, PRN analgesics are frequently used by the patients to relieve post operative pain. This study aims to investigate the correlation between pre-operative factors, such as resilience score and physical function on post operative length of stay/PRN analgesia use. Thus, it may provide opportunities for clinicians to optimise patient’s pre operative status, which would have the potential to reduce both length of hospital stay and PRN analgesia use.

Interventions

Some data collected in this study will involve no direct patient involvement and will be obtained via medical records, including demographic characteristics and admission details including length of hospital stay (days) and analgesia consumption. The patients in this study will also be directly involved in completing physical assessments and surveys before their surgery, these include: Knee Range of motion - 2 minutes Walking distance - 2 minutes EQ5D Survey of self-reported function - 10 minute

Some data collected in this study will involve no direct patient involvement and will be obtained via medical records, including demographic characteristics and admission details including length of hospital stay (days) and analgesia consumption. The patients in this study will also be directly involved in completing physical assessments and surveys before their surgery, these include: Knee Range of motion - 2 minutes Walking distance - 2 minutes EQ5D Survey of self-reported function - 10 minutes Oxford Knee Score Survey of self-reported function - 10 minutes Brief resilience Survey - 5 minutes Pain Catastrophising Scale Survey - 10 minutes All data will be collected by a registered physiotherapist. Observational period is from two weeks prior to surgery to discharge from the acute hospital setting following surgery.

Sponsors

Gold Coast Hospital and Health Service
Lead SponsorGovernment body

Eligibility

Sex/Gender
All
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Patients scheduled for primary unilateral Total Knee Arthroplasty (TKA) for a primary diagnosis of osteoarthritis at Robina Hospital. Patients who consent to participate in the trial Patients who are able to participate in the assessment of study outcomes

Exclusion criteria

Patients will be excluded if they: o Decline or unable to provide informed consent. o Discharge to an inpatient rehabilitation facility o Experience a peri-operative or post-operative complication or hospital readmission.

Outcome results

None listed

Source: ANZCTR · Data processed: Apr 3, 2026