Int J Comput Assist Radiol Surg - Shoulder motion during tennis serve: dynamic and radiological evaluation based on motion capture and magnetic resonance imaging.

Tópicos

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Resumo

RPOSE: Rotator cuff and labral lesions in tennis players could be related to posterosuperior internal impingement or subacromial impingement during tennis serve. However, it is unknown which of these impingements are responsible for the lesions found in the tennis player's shoulder. Moreover, there is a lack of validated noninvasive methods and dynamic studies to ascertain impingement during motion.METHODS: Ten intermediate or ex-professional tennis players were motion captured with an optical tracking system while performing tennis serves. The resulting computed motions were applied to patient-specific shoulder joints' 3D models based on magnetic resonance imaging (MRI) data. During motion simulation, impingements were detected and located using computer-assisted techniques. An MRI examination was also performed to evaluate the prevalence of shoulder lesions and to determine their relevance with the simulation findings.RESULTS: Simulation showed that internal impingement was frequently observed compared to subacromial impingement when serving. The computed zones of internal impingement were mainly located in the posterosuperior or superior region of the glenoid. These findings were relevant with respect to radiologically diagnosed damaged zones in the rotator cuff and glenoid labrum.CONCLUSIONS: Tennis players presented frequent radiographic signs of structural lesions that seem to be mainly related to posterosuperior internal impingement due to repetitive abnormal motion contacts. The present study indicates that the practice of tennis serve could lead with time to cartilage/tendon hyper compression, which could be damageable for the glenohumeral joint.

Resumo Limpo

rpose rotat cuff labral lesion tenni player relat posterosuperior intern imping subacromi imping tenni serv howev unknown imping respons lesion found tenni player shoulder moreov lack valid noninvas method dynam studi ascertain imping motionmethod ten intermedi exprofession tenni player motion captur optic track system perform tenni serv result comput motion appli patientspecif shoulder joint d model base magnet reson imag mri data motion simul imping detect locat use computerassist techniqu mri examin also perform evalu preval shoulder lesion determin relev simul findingsresult simul show intern imping frequent observ compar subacromi imping serv comput zone intern imping main locat posterosuperior superior region glenoid find relev respect radiolog diagnos damag zone rotat cuff glenoid labrumconclus tenni player present frequent radiograph sign structur lesion seem main relat posterosuperior intern imping due repetit abnorm motion contact present studi indic practic tenni serv lead time cartilagetendon hyper compress damag glenohumer joint

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