Leg lenght difference (cm)

Symptom Checklist-90

Psychological Well-being Scales The Italian validated version, Review of Psychiatry, 2003, 38, 3, pp.117-130) will be used. The reduced version from the 18-item test (3 items for each of the 6 dimensions of psychological well-being) will be used. Each item is assigned a score variable from 1 (= it is not my case / I do not agree) to 6 (= it is just so / perfectly agree). Some items are expressed in negative form and therefore in scoring the score assigned by the subject must be reversed. Adding the scores of the triplets you get a score for each of the 6 dimensions / subscales: autonomy, environmental control, positive relationships with others, self-acceptance, purpose in life and personal growth. Instead, the sum of the value of all 18 items gives an overall value of psychological well-being. At higher scores there is a higher level of well-being (both general and specific for each of the 6 measured dimensions).

Rosenberg Self-Esteem Scale The version translated and validated in Italian by Professor Miretta Prezza of the University of Florence (Bulletin of Applied Psychology, 1997, 223, 35-44) will be used. It measures the attitude towards oneself through 10 items, to which the subject must respond by assigning a score from 1 (strongly disagree) to 4 (strongly agree) The scores of the negative items are reversed. The total score, obtained by adding the scores of the individual items, at higher values corresponds to an attitude more positive towards oneself.

Amputees Body Image Scale by James W. Breakey published in the Journal of Prosthetics and Orthotics (Volume 9, Number 2 / Spring 1997).

It has never been translated and validated in Italian, it has been translated and adapted (to amputation + gyroplasty) for this study.

It evaluates the disturbance in the perception of the body image on a frequency scale (from ever to ever) to 5 points ((1 = never; 5 = always) .It consists of 20 items (3 of which are expressed in 'positive' and therefore to be counted by inverting the score.) The scale gives an overall value (obtained by adding the score of all the items), which goes from 20 to 100: at higher scores there is a greater problematic in the perception of one's body image.

Delos proprioceptive system