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Glenoid Track

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Shoulder Instability

Abstract

There are two distinct types of shoulder instability: 1) traumatic unilateral instability often with a Bankart lesion and usually requiring surgery (TUBS), and 2) atraumatic, multidirectional laxity, frequently bilateral, responds well to rehabilitation, however, should surgery be performed, an inferior capsular shift procedure is the treatment of choice (AMBRI) [1]. Whereas this classification does not include all types of instability, it does include the two most common types. Another classification that is important to understand is the one based on the position of the shoulder: midrange and endrange instability [2]. When the shoulder is in the mid-range of motion, all capsuloligamentous structures are lax and thus play no role as stabilizers. In this position, the shoulder is stabilized either by the negative intra-articular pressure (hanging-arm position without muscle contraction) or by the concavity-compression effect caused by the muscle contraction force against the glenoid concavity

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Authors
  1. Eiji Itoi
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  2. Noboyuki Yamamoto
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  3. Yasushi Omori
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Editor information

Editors and Affiliations

  1. Arthroscopic Surgery Department, Concordia Hospital for Special Surgery, Rome, Italy

    Giovanni Di Giacomo , Alberto Costantini , Andrea De Vita  & Nicola de Gasperis , ,  & 

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© 2011 Springer-Verlag Italia

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Itoi, E., Yamamoto, N., Omori, Y. (2011). Glenoid Track. In: Di Giacomo, G., Costantini, A., De Vita, A., de Gasperis, N. (eds) Shoulder Instability. Springer, Milano. https://doi.org/10.1007/978-88-470-2035-1_1

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  • DOI: https://doi.org/10.1007/978-88-470-2035-1_1

  • Publisher Name: Springer, Milano

  • Print ISBN: 978-88-470-2034-4

  • Online ISBN: 978-88-470-2035-1

  • eBook Packages: MedicineMedicine (R0)

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