internal rotation deficit of the glenohumeral joint in advanced-level handball players

Conditions: Internal Rotation Contracture-shoulder; Articulation Disorders; Athletic Injuries

Summary: the main objective of this study is to estimate the incidence and prevalence of internal rotation deficit (ird) defined by a measure of ird 2 (internal rotation deficit in position 2) strictly greater than 20 ° in a population of advanced-level handball players over a training season.

the secondary objectives of this study are : a- to estimate and compare the prevalence of internal rotation deficit within groups b- to assess the association between the internal rotation deficit and the appearance of a shoulder pain and/or discomfort when throwing c- to assess the association between internal rotation deficit and the appearance of a shoulder pathology demonstrated by clinical examination by at least one abnormality in one of the following three tests: the arming apprehension test, the relocation test or the o'brien test d- assess changes in values of ird 2, the ratio ird 2/gre 2, and the total range of motion over the training season e- evaluate the association between the values of ird 2 and the appearance of shoulder pain or discomfort when throwing f- to evaluate the association between ird 2 values and the appearance of a shoulder pathology (at least one anomaly in one of three tests: the arming apprehension test, the relocation test or the o'brien test). g- to assess the association between values of the ird 2/gre 2 ratio and the appearance of shoulder pain or discomfort when throwing h- to assess the association between values of the ird 2/gre 2 ratio and the appearance of a shoulder pathology (at least one anomaly in one of three tests: the arming apprehension test, the relocation test or the o'brien test). i- to estimate the optimal threshold value of the ird 2/gre 2 ratio that would define an internal rotation deficit in a more relevant fashion as compred to the ird 2 alone

Eligibility criteria:
inclusion criteria: * the subject or his/her legal guardian must have given his/her informed and signed consent * the subject must be insured or beneficiary of a health insurance plan * the subject is a member of the professional and pre-professional handball clubs in nîmes, france (the usam or hbcn clubs) -- or-- a member of the training centers associated with the same clubs whose parents or legal representatives have given informed consent exclusion criteria: * the subject is under judicial protection, under tutorship or curatorship * the subject or his/her legal respresentative refuses to sign the consent * it is impossible to correctly inform the subject * the subject is pregnant, parturient, or breastfeeding * the subject has been operated for shoulder instability, regardless of the surgical technique used * the subject has a history of fracture of the proximal end of the humerus and / or elbow * the subject has a history of rotator cuff surgery * the subject has neurological or spinal problems, or has received physiotherapy on the shoulder complex within 30 days prior to the study assessment

Keywords: deficit internal rotation gleno humeral articulation hand ball