Reference Values for the Dynamic Evaluation Method of Lower Limb Joint Alignment (MADAAMI II) for Dancers

Objective: The aim of this study was to propose reference values for the Dynamic Evaluation Method of Lower Limb Joint Alignment (MADAAMI II). Methods: During the 2023 Joinville Dance Festival, 346 dancers (315 females and 31 males), aged between 15 and 58 years, with a minimum of 5 years of ballet experience, were randomly evaluated. The dancers were filmed performing the three-step sequence (demi plié, grand plié, and fondu) of the MADAAMI II, in the first foot position, with self-selected turnout and at 120 degrees. A single trained evaluator analyzed the videos using the method's scoring sheet, and the scores (foot, knee, pelvis, and general) were calculated. To verify if there was a difference between the scores of young and adult dancers, the Mann-Whitney U test was used, and to determine the reference values, the 10th, 15th, 25th, 50th, 75th, 85th, and 90th percentiles were calculated considering the total sample. Results: There was no significant difference between young and adult dancers regarding lower limb joint alignment, thus the reference values for the MADAAMI II scores can be used for all dancers aged 15 years and older. The reference values, based on the 15th and 85th percentiles, respectively, are: Foot Score (31-52); Knee Score (34-56); Pelvis Score (40-55); and General Score (115-156). Conclusion: The determined reference values can be used as a screening tool to determine the lower limb stability of dancers. This study can help in verifying the effectiveness of a specific training program and in detecting dancers at risk of injury.