Classificação e relação anatômica dos tipos de incisura da escápula e sua importância clínica

Resumo (EN)

Objective – This anatomical study classify the different types of suprascapular notch and establish the relation between the notch area and the total area of the scapula, showing the clinical presentation in compression of the suprascapular nerve, which has this passage into the foramen bounded by the notch and the superior transverse scapular ligament. This is a mixed nerve, wich originates from C5-C6 and often C4, its motor component supplies the supra and infra espinal muscles and your sensory component the glenoumeral and acromioclavicular joints. In volleyball and baseball athletes there subscapularis muscle hypertrophy and compression of this nerve. Methods – Ninety three macerated scapula were analyzed and classified according Rengachary et al4 (1979), where was established the relationship between the notch area and the total area of the scapula through the template paper method. Results – The suprascapular notch of type III was prevalent (34%), with a small area compared to other types; followed by the type IV (20%); and type VI absent. The medium score between the area of the scapular notch and the total area of the scapula was 0,3%. Conclusion – The scapula that have suprascapular notch type III have been prevalent, followed by type IV and type VI was absent, showing, according to literature, a greater propensity to generate a compression.