TITLE: Translation and cultural adaptation of Lithuanian version of the anterior cruciate ligament return to sport after injury (ACL-RSI) scale
AUTHORS: Saulė Salatkaitė, Laimonas Šiupšinskas, Rimtautas Gudas

[DESCRIPTION]
<div class = "text-blocks"><div class = "text-block">Purpose </div><div class = "text-block">To translate, cross-culturally adapt and validate the scale to Lithuanian.</div><div class = "text-block">Methods</div><div class = "text-block">The process of translation and cultural adaptation followed the recommendations of international guidelines. All included patients were after unilateral ACL reconstruction. Study participants completed IKDC, Tegner and ACL-RSI-Lt questionnaires. Reliability, construct validity and internal consistency were measured.</div><div class = "text-block">Results</div><div class = "text-block">Study included 65 patients after ACL reconstruction: mean age 25.55 ± 6.77, mean height 180.91 ± 11.78 cm, mean weight 79.12 ± 14.88 kg and mean BMI 24.01 ± 2.90. The ACL-RSI-Lt showed excellent internal consistency (Cronbanch’s alpha 0.94). Scale scores were correlated with IKDC score (r = 0.637, p < 0.001) and IKDC subscales (r = 0.530-0.581, p < 0.001) and Tegner activity score (r = 0.303-0.493, p < 0.001). Tegner activity score before injury was significantly higher than after ACLR (6.95 ± 1.49 vs. 6.1 ± 1.37, p < 0.001). </div><div class = "text-block">Conclusions</div><div class = "text-block">The ACL-RSI is successfully translated into Lithuanian (ACL-RSI-Lt). It is valid and reliable scale to evaluate the psychological impact of returning to sports in Lithuanian patients after ACLR surgery.</div></div>

[STEPS]
?. [Permission]
Received the authors' agreement to use and translate ACL-RSI scale.
?. [Translation]
Scale was translated by physical therapist and translator who were all native Lithuanian speakers and fluent in English.
?. [Translation]
Translators discussed about translations.
?. [Translation]
A common Lithuanian version was created.
?. [Translation]
Translated scale was retranslated into English by two independent native English speakers.
?. [Translation]
Two versions of the ACL-RSI-Lt scale were compared to the original version of ACL-RSI.
?. [Translation]
10 patients with ACL injury were asked to answer the scale and comment if they have any difficulty in answering the questions.
?. [Permission]
Ethical approval was obtained from the Lithuanian Bioethics Committee (no BE-2-24).
?. [Participants]
In study were involved 65 patients.
?. [Participants]
Inclusion criteria: older than 18 years, minimum 6 months after ACLR surgery, unilateral lesion of ACL. Exclusion criteria: revision surgery, multiligament surgery, meniscectomy, other leg injuries/surgeries.
?. [Participants]
All patients received consent form, activity rating scale Tegner, IKDC 2000 questionnaire and ACL-RSI scale.
?. [Participants]
Patients completed the forms separately.
?. [Statistics]
Internal consistency was measured using the Cronbach's alpha.
?. [Statistics]
To confirm uni-dimensionality of the scale, principal component analysis was performed.
?. [Statistics]
Construct validity was evaluated by correlating ACL-RSI-Lt with IKDC, IKDC subscales and Tegner activity scale.
?. [Statistics]
Content validity was assessed by analyzing score distribution and the occurrence of ceiling and floor effects.
?. [Statistics]