Regular shoulder scores are reliable and reproducible but take time underlining the need for a quicker test for repetitive assessments at the office. The SC-T is based on the measurement with a goniometer of the maximal active thoraco-humeral angle obtained without pain in the so-called “Yocum position”. Hypotheses:

– H1: C-test is reproducible in overall shoulder pathologies evaluation;

– H2: correlates with Constant, DASH, Quick-DASH before and after surgery;

– H3: is particularly sensitive to arthroscopic rotator cuff repair (ARCR).

H1, H2: Wilcoxon rang-test and Spearman correlation coefficient (ρ) for the intra- and inter-observator reproducilibilty, and the correlation between the tests in a population of 87 patients (75% RC tendinopathies); H3: Pearson correlation coefficient (R) in 2 populations of 28 patients (overall surgery) and 60 patients (ARCR) with a minimal follow-up of 6months.

H1: SC-T demonstrates a high intra and inter-observer reproducibilty (ρ>0.81; P<.0005); H2: SC-T correlates with the 3 tests (ρ>0.60; P<.00001). SC-T improves with surgery and correlates with the 3 tests preoperatively but only with the Constant score postoperatively (R .44; P<.03); H3: SC-T improves with ARCR and correlates with the Constant score pre- and postoperatively (R .60; P<.005).

SC-T is highly reproducible as it is a quantitative angular measurement. It correlates with the regular tests and is sensitive to ARCR. It is now our usual “very quick tool” (30seconds, imaging possible) we were waiting for at the office, but it does not replace the Constant score and the SST for scientific evaluation.