126: Study of trigger points in shoulder pain

S. Perez Palomares1, 2, B. Oliván-Blázquez3, 2, E. López-Lapeña1, 2, E. Gaspar-Calvo1, 2, MªL. De-la-Torre-Belderrain1, 2, M. Pérez-Benito1, 2, V. Ara-Loriente1, 2, R. Magallon Botaya1
1 Primary Care, Aragones Health Services, Zaragoza, Spain; 2 Primary Care Research, Aragones Health Science Institute, Zaragoza, Spain; 3 Psychology Department, University of Zaragoza, Zaragoza, Spain
Shoulder pain is an important cause of morbidity and has high prevalence. It is the third most common musculoskeletal problem seen in primary care consultations.
The biomechanical situation in movement of the scapula is relevant in its aetiology, as is an underlying muscular cause that may be responsible for this absence of normal movement. This muscular cause is referred to as myofascial trigger points (MTrPs), which are located in the soft tissues, mainly in the muscle bellies.
Aims:To identify the existence of MTrPs in the context of subacromial impingement, which leads to pathologies affecting the tendons of the rotator cuff.
Methodology: Transversal descriptive study into the correlation between the existence of MTrPs in the periarticular muscles and their influence on perceived pain (measured with VAS), limitation of joint mobility (measured with goniometry) and shoulder function (evaluated with the Constant score).
Sample size: 121 subjects. Statistical analysis of correlation was performed using Spearman’s rho correlation coefficient.
Results: The mean number of MTrPs per patient was 5.5 (±2.3) and 47.1% of patients had more than 5 MTrPs. The more MTrPs patients had, the more pain they suffered, in addition to having less mobility in flexion and abduction, and lower shoulder function for carrying out the activities of daily life. The most influential MTrPs were those located in the supraspinatus, teres minor and deltoid muscles.
Conclusions: These findings are significant in that they allow treatment for this condition to be adjusted with such effective techniques as dry needling of MtrPs.

Disclosure: No conflict of interest declared