SURGICAL PLANNING IN IDIOPATHIC SCOLIOSIS: APP USABILITY AND UTILITY

VERDE, EMíLIO CRISóSTOMO LIMA; CARVALHO, ABRAHãO CAVALCANTE GOMES DE SOUZA

doi:10.1590/S1808-185120222204267005

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ORIGINAL ARTICLE • Coluna/Columna 22 (4) • 2023 • https://doi.org/10.1590/S1808-185120222204267005 copy

SURGICAL PLANNING IN IDIOPATHIC SCOLIOSIS: APP USABILITY AND UTILITY

PLANEJAMENTO CIRÚRGICO NA ESCOLIOSE IDIOPÁTICA: USABILIDADE E UTILIDADE DE APP

PLANIFICACIÓN QUIRÚRGICA EN ESCOLIOSIS IDIOPÁTICA: USABILIDAD Y UTILIDAD DEL APP

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Objective:

To evaluate the usability and usefulness of an application developed for surgical planning of scoliosis correction to measure the time spent on planning. Methods: Experimental, controlled, cross-sectional, and applied study. The application underwent a usability test using the SUS questionnaire, in addition to applying a questionnaire to assess its usefulness using the TAM utility perception model. Thirty-six volunteers were divided into three groups: residents, orthopedists from the Brazilian Society of Orthopedics and Traumatology (SBOT), and spine surgeons. Results: By applying the SUS questionnaire, the application obtained a score of 75.69, representing classification C on the Sauro and Lewis scale, the third best. The application’s utility was considered good after evaluating the positive responses of the TAM model. On average, planning through the application was 20% faster than manual planning. Conclusion: The Scoliplan application proved useful and optimizes surgical planning in AIS, as it establishes a step-by-step standardization supported by the literature (Suk classification); it helps the user with uniform and reliable planning. Level of Evidence III; Diagnostic Studies.

Keywords:
Scoliosis; Adolescent; Planning; Smartphone; Mobile Applications

		Study groups
	Total	Residents	Orthopedists	Spine surgeons	p-Value

SUS	75.69±6.05	75.00±7.15	75.83±6.60	76.25±4.59	0.816^a

		Study groups
	Total	Residents	Orthopedists	Spine surgeons	p-Value
Q11
I disagree	0(0.0%)	0(0.0%)	0(0.0%)	0(0.0%)	1.000^b
I agree	36(100.0%)	12(100.0%)	12(100.0%)	12(100.0%)
Q12
I agree	35(97.2%)	12(100.0%)	11(91.7%)	12(100.0%)	0.358^b
I can’t answer that	1(2.8%)	0(0.0%)	1(8.3%)	0(0.0%)
Q13
I disagree	0(0.0%)	0(0.0%)	0(0.0%)	0(0.0%)	1.000^b
I agree	36(100.0%)	12(100.0%)	12(100.0%)	12(100.0%)
Q14
It contributes a lot	22(61.1%)	11(91.7%)^* * p<0.05, bChi-square test (n, %).	8(66.7%)^* * p<0.05, bChi-square test (n, %).	3(25.0%)	0.016^b
Contributes	13(36.1%)	1(8.3%)	4(33.3%)	8(66.7%)^* * p<0.05, bChi-square test (n, %).
Contributes little	1(2.8%)	0(0.0%)	0(0.0%)	1(8.3%)
Q15
It contributes a lot	13(36.1%)	7(58.3%)^* * p<0.05, bChi-square test (n, %).	6(50.0%)^* * p<0.05, bChi-square test (n, %).	0(0.0%)	0.006^b
Contributes	23(63.9%)	5(41.7%)	6(50.0%)	12(100.0%)^* * p<0.05, bChi-square test (n, %).
Q16
Indifferent	1(2.8%)	0(0.0%)	0(0.0%)	1(8.3%)	0.007^b
I agree	24(66.7%)	4(33.3%)	9(75.0%)^* * p<0.05, bChi-square test (n, %).	11(91.7%)^* * p<0.05, bChi-square test (n, %).
I totally agree	11(30.6%)	8(66.7%)^* * p<0.05, bChi-square test (n, %).	3(25.0%)	0(0.0%)
Q17
Indifferent	4(11.1%)	0(0.0%)	0(0.0%)	4(33.3%)^* * p<0.05, bChi-square test (n, %).	0.002^b
I agree	18(50.0%)	4(33.3%)	6(50.0%)^* * p<0.05, bChi-square test (n, %).	8(66.7%)^* * p<0.05, bChi-square test (n, %).
I totally agree	14(38.9%)	8(66.7%)^* * p<0.05, bChi-square test (n, %).	6(50.0%)	0(0.0%)

	I strongly disagree	I disagree	Indifferent	I agree	I totally agree
1) I think I'd like to use this application frequently.	1	2	3	4	5
2) I found this application unnecessarily complex.	1	2	3	4	5
3) I found the application easy to use.	1	2	3	4	5
4) I think I would need technical support to use this application.	1	2	3	4	5
5) I thought that the application's various functions were well integrated.	1	2	3	4	5
6) I thought there was a lot of inconsistency in the application.	1	2	3	4	5
7) I imagine most people can learn to use this application very quickly.	1	2	3	4	5
8) I found the application very complicated to use.	1	2	3	4	5
9) I felt very confident in using this application.	1	2	3	4	5
10) I had to learn several things before I could start using this application.	1	2	3	4	5

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[1] Study conducted by the Centro Universitário Christus (UNICHRISTUS), Post-Graduation in Minimally Invasive Technology, Fortaleza, CE, Brazil.

11) Measuring the Cobb angle using the app can help the surgeon make decisions when planning scoliosis surgery. ( ) Agree ( ) Disagree ( ) Don’t know how to answer	14) I believe that the standardization through a step-by-step proposed by the app can help resident doctors learn about surgical planning in Scoliosis. ( ) Contributes a lot ( ) Contributes ( ) Contributes little ( ) Does not contribute
12) The possibility of tracing the Central Vertical Sacral Line on the X-ray photo collected by the app could help in the planning of scoliosis surgery. ( ) Agree ( ) Disagree ( ) Don’t know how to answer	15) I believe that standardization through a step-by-step process proposed by the app can help spine surgeons plan scoliosis surgery. ( ) Contributes a lot ( ) Contributes ( ) Contributes little ( ) Does not contribute
13) The presentation of the vertebral rotation model proposed by Nash-Moe helps the surgeon to correctly define the type, leading to less chance of error in surgical planning. ( ) Agree ( ) Disagree ( ) Don’t know how to answer	16) I think it’s a useful technology for planning scoliosis correction surgery ( ) Strongly Disagree ( ) Disagree ( ) Indifferent ( ) Agree ( ) Strongly Agree
	17) It helped me to understand better the concepts related to scoliosis planning. ( ) Strongly Disagree ( ) Disagree ( ) Indifferent ( ) Agree ( ) Strongly Agree