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Spinal Anaesthesia vs. General Anaesthesia for THA, TKA and UKA

Randomized Trial on Spinal Anaesthesia vs. General Anaesthesia (SAGA) on Recovery After Total Hip, Total Knee, and Unicompartmental Knee Arthroplasty

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05706844
Acronym
RCT SAGA
Enrollment
222
Registered
2023-01-31
Start date
2023-03-06
Completion date
2025-04-06
Last updated
2025-05-04

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

Conditions

Osteoarthritis, Hip, Osteoarthritis, Knee

Keywords

Hip arthroplasty, Knee arthroplasty, Unicompartmental knee arthroplasty, General anaesthesia, Spinal anaesthesia, Hip osteoarthritis, Knee osteoarthritis, Fast-track surger

Brief summary

The goal of this randomized clinical trial is to investigate the postoperative recovery following hip and knee arthroplasty procedures depending on the use of either spinal anaesthesia (SA) or general anaesthesia (GA). The main questions are: * Are more patients able to be safely mobilized within 6 hours postoperatively when using GA compared to SA? * Does postoperative pain, nausea and vomiting, dizzyness, occurence of delirium and urinary retention differ between the anaesthetic methods? Participants, scheduled for total hip, total knee and unicomartmental knee arthroplasty, will be randomized to recieve spinal anaesthesia or general anaesthesia in relation to surgery. At 6 hours postoperatively a physiotherapist will conduct a 5-meter walking test to evaluate whether the participant can be safely mobilized.

Interventions

DRUGSpinal anesthesia

plain or heavy Bupivacaine hydrochloride 10 mg (2 mL) injected in the spinal canal

DRUGGeneral anaesthesia

Propofol (induction: 1.0-2.0 mg/kg. infusion: 3-5 mg/kg/hour) + Remifentanil (induction: 3-5 mcg/kg, infusion: 0.5 mcg/kg/min) given intravenously

Sponsors

Vejle Hospital
CollaboratorOTHER
Anders Troelsen
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)

Masking description

Physcians and nurses in the surgical department are not able to be blinded. But outcome assesors (ie. physiotherapists, research personel) are not aware of the treatment allocation.

Intervention model description

Each of the three arthroplasty procedures are investigated in a 2-arm randomised trial: Total hip arthroplasty - either spinal anaesthesia or general anaesthesia. Total knee arthroplasty - either spinal anaesthesia or general anaesthesia. Unicompartmental knee arthroplasty - either spinal anaesthesia or general anaesthesia.

Eligibility

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

Inclusion criteria

* Clinical and radiological hip or knee osteoarthritis meeting the indications for primary total hip, total knee, or unicompartmental knee arthroplasty. * ≥18 years of age. * Able to speak and understand Danish * Able to give informed consent and must be cognitively intact.

Exclusion criteria

* Lives in an institution. * Uses walking aid such as a walker or a wheelchair. * Terminal illness. * Has contraindications for either general or spinal anaesthesia. * Has objections to receiving either general or spinal anaesthesia. * Requires anxiolytics as premedication prior to anaesthesia. * Traumatic aetiology as a basis for surgical indication. * Altered pain perception and / or neurologic affection due to diabetes or other disorders. * Daily preoperative use of opioids \> 30 mg of morphine milligram equivalents (MME). * Standard primary arthroplasty procedure is evaluated not to be suitable. * Women considered fertile but without sufficient birth control.

Design outcomes

Primary

MeasureTime frameDescription
Ability to be mobilsed safely within 6 hours of surgerywithin 6 hours postoperatively.5-meter walking test where a physiotherapist evaluates whether the participant can be safely mobilized within 6 hours of surgery.

Secondary

MeasureTime frameDescription
Pain scoreOn the day of surgery: at 4 hours postoperatively and 6 hours postoperatively. From postoperative day 1 and until discharge (on average 1 day): at 10.00 and at 18.00. This will be asses as long as the patient is admitted.Will be recorded during rest and 5-m walk using participant evaluated NRS of 0 to 10, with 10 being worst pain/dizziness/nausea imaginable. This will be recorded at 4 and 6 hours post-operatively on the day of surgery and at 10:00 and 18:00 on the following postoperative days.
Fulfilment of discharge criteriaOn the day of surgery: at 4 hours postoperatively and 6 hours postoperatively. From postoperative day 1 and until discharge (on average 1 day): at 10.00 and at 18.00. This will be asses as long as the patient is admitted.Dichotomous (Yes or No)
Opioid use in Morphine Milligram Equivilents within the first 6 hours of surgeryOn the day of surgery: Within the first 6 hours after surgery.Cumulated opioid use in Morphine Milligram Equivalents.
Nausea ScoreOn the day of surgery: at 4 hours postoperatively and 6 hours postoperatively. From postoperative day 1 and until discharge (on average 1 day): at 10.00 and at 18.00. This will be asses as long as the patient is admitted.Will be recorded during rest and 5-m walk using participant evaluated NRS of 0 to 10, with 10 being worst pain/dizziness/nausea imaginable. This will be recorded at 4 and 6 hours post-operatively on the day of surgery and at 10:00 and 18:00 on the following postoperative days.

Other

MeasureTime frameDescription
Quality of Recovery-15 scoreOn the day of surgery: at 4 hours postoperatively. From postoperative day 1 and until discharge (on average 1 day): at 10.00. This will be asses as long as the patient is admitted.Four hours postoperatively on the day of surgery and at 10:00 on the following
Vital signs - diastolic blood pressureOn the day of surgery: at 4 hours postoperatively and 6 hours postoperatively. From postoperative day 1 and until discharge (on average 1 day): at 10.00 and at 18.00. This will be asses as long as the patient is admitted.Diastolic blood pressure (mmHg).
Vital signs - systolic blood pressureOn the day of surgery: at 4 hours postoperatively and 6 hours postoperatively. From postoperative day 1 and until discharge (on average 1 day): at 10.00 and at 18.00. This will be asses as long as the patient is admitted.Systolic blood pressure (mmHg).

Countries

Denmark

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026