ISQua's 39th International Conference 2023

TITLE: A study on factors affecting the operation time in patients undergoing total knee arthroplasty

OBJECTIVE: The present study aimed to identify factors that are associated with operation time among patients undergoing TKA.

METHODS: Data of this cross-sectional study were extracted from the medical records of academic medical center of Southern Taiwan.

A total of 2,321 patients who underwent TKA between January 2016 and June 2022 were identified.

The variables were included

(1)Patient factors: age, gender, body mass index (BMI), main diagnosis (divided into osteoarthritis and others), and number of comorbidities.

(2)Surgeon factors: specialist tenure, surgical experience (<50/year, 50‒99/year, or >100/year), and previous operation time.

(3)Procedure factors: types of anesthesia, and American Society of Anesthesiologists (ASA).

Operation time was defined as the surgical time from skin incision to complete skin closure.

A generalized linear model (GLM) was used to evaluate which factors have a significant effect on operation time.

CONCLUSIONS:

(1)Positive associated with longer operation time：patients with the age of 20–44 years, male, BMI, and previous operation time

(2)Negative associated with longer operation time： main diagnosis of osteoarthritis, high-volume surgeons, and regional anesthesia

(3)We concluded that the operation time for TKA was affected by patient age, BMI, previous operation time, surgeon surgical volume, and anesthesia type. Patients with a higher BMI, less experienced surgeons, and anesthesia type would significantly prolong the operation time.

ISQua's 39th International Conference 2023

A STUDY ON FACTORS AFFECTING THE OPERATION TIME IN PATIENTS UNDERGOING TOTAL KNEE ARTHROPLASTY

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