## 4 Discussion
[8] and [PERSON] [6],who also found a positive relationship between the ABIS questionnaire and the presence of anxiety and depression. We also found a significant relationship between ABIS-E and BPI-SF in both of its dimensions, severity and interference with factor 1 and 3, though it was not strong (r < 0.3). In the French validation study, they also found a poor correlation with pain severity and interference spheres [8]. Regarding to the PEQ (satisfaction with the prosthesis), a significant inverse correlation was found for factor 1 (personal) with the scales of appearance, sounds, residual limb health, frustration, social burden, ambulation, wellness, and items A, B, and I; factor 2 (social) with the appearance and sounds scales and A, B items; and factor 3 (functional) with ambulation scale and \(p\), A items. This shows that high scores on the PEQ and ABIS-E measure inverse facts: the higher the PEQ score, the higher the satisfaction with prosthesis-related aspects, while the ABIS-E indicates a worse body image the higher its evaluation. In this way, [PERSON] et al. proposed that for any prosthesis to be accepted and used it must be comfortable, functional, and have 'a pleasing appearance' [44]. Also, [PERSON] and [PERSON] found that 'functional satisfaction' with a prosthesis was also related to a positive body image, particularly among women [45]. In their whole sample, higher levels of overall satisfaction with their prosthesis (measured by TAPES scale) were correlated with lower levels of body image disturbance assessed by ABIS. In the other direction (positive correlation) is factor 1 (personal) and the PEQ item \"How annoying is it to see people looking at you and your prosthesis?\", in which a higher score means greater importance, a fact it shares with the ABIS-E, with which it correlates strongly. The scoring of the different dimensions of the EQ-5D-5L to assess the different aspects of quality of life was also found to be related to the scores obtained in the ABIS-E: the higher the score, the worse the quality of life and the greater the limitation. However, as the correlation itself indicates, the visual scale of this questionnaire and the calculated index are inversely related (higher scores indicate a better quality of life). Factor 1 of the ABIS-E (personal) is the most strongly correlated. The other factors did not show a robust correlation, which matches with the French validation study by [PERSON] et al. [8], who also used a generic quality-of-life questionnaire (SF-36), and not one specifically for amputees. Due to the items contained in the scale and because of its physical and psychological nature, this tool, evaluated in the first weeks after the amputation, could indicate not only the general state of the patient's perception of his or her own body but also attend to the items with lower scores. It is possible that patient profiles that attach importance to how the prosthesis feels or how they move around with it can be quickly detected with this scale and physiotherapists can perform specific exercises and stimuli to alleviate this situation. On the other hand, early detection of patients with body image distortion would allow protocols to be activated so that this can be addressed with psychological therapy and reduce sequelae such as depression or pain. Considering the hypotheses relating phantom limb pain felt by patients to possible alterations in the cerebellum and its internal models, involved in the activities performed by the Mirror Neuron System (or Action Observation Network) [46], future research could evaluate whether scales such as the ABIS-E can predict the presence of these alterations and symptoms or even the progression of these.