Zusammenfassung
Die Sportlerschulter bewegt sich in einem Zwiespalt zwischen gewünschter maximaler Beweglichkeit und unerwünschter Instabilität des Gelenks. Grundsätzlich kann dabei zwischen traumatischer Makroinstabilität und atraumatischer Mikroinstabilität unterschieden werden.
Insbesondere bei Überkopfsportarten kommt es im Rahmen der repetitiven Bewegungsausführung zu Anpassungserscheinungen der kapsulären Gelenkstabilisatoren: Elongation (Insuffizienz) der anterioren Kapsel und Kontraktur der posterioren Kapsel. Hieraus können neben dem Symptom einer anterioren Mikroinstabilität durch die vermehrte Auslenkung des Humeruskopfs auch glenohumerale Impingementphänome resultieren. Bei der Werferschulter stellt das posterosuperiore Impingement (PSI) das Kernproblem da, welches einen pathologischen Kontakt der Supraspinatus- und Infraspinatussehne am hinteren Glenoid beinhaltet und auch mit Superior-labrum-anterior-to-posterior(SLAP)-Läsionen assoziiert ist. Bei der Schwimmerschulter ist zusätzlich das anterosuperiore Impingement bei kombinierter Anteversion, Adduktion und Innenrotation des Arms relevant.
Die traumatische Schulterinstabilität des Kontaktsportlers lässt sich als Entität von der Mikroinstabilität des Überkopfsportlers abgrenzen. Kennzeichen ist die eindeutige Schulterluxation bei adäquatem Trauma und eine hierdurch verursachter struktureller Schaden am Gelenk. Zusätzlich zum hohen empirischen Rezidivrisiko junger Kontaktsportler beinhalten aus biomechanischer Sicht knöcherne Defekte des Glenoids ein hohes Gefährdungspotenzial. Kontaktsportler mit traumatischer Schulterinstabilität sollten daher im Verdachtsfall gezielt mittels CT-Untersuchung auf Glenoiddefekte hin untersucht und ggf. mittels knochenaufbauender Verfahren therapiert werden.
Abstract
The demand profile of athletes shoulders is high. On the one hand the shoulder has to provide a maximum active range of motion that allows rapid movements of the arm and on the other hand it has to be sufficiently stabilized to decelerate rapid movements and to neutralize the resulting translational forces. Two general types of instability can be differentiated in athletes shoulders: the macroinstability typically occurring in athletes involved in contact sports and the microinstability occurring in athletes involved in overhead sports.
Repetitive abduction and external rotation movements of athletes involved in overhead sports lead to adaptation of the glenohumeral joint capsule and ligaments. The anterior capsule becomes stretched while the posterior capsule develops tightness. These adaptations can result in an anterior microinstability as well as posterosuperior impingement (PSI) which implicates a pathological contact of the posterosuperior rotator cuff with the posterior glenoid and which is also associated with SLAP lesions. In contrast the shoulders of swimmers are prone to anterosuperior impingement because the arm stroke involves a forceful combined anteflexion, adduction and internal rotation of the arm.
The macroinstability of contact athletes is caused by sufficient trauma and characterized by a structural lesion of capsulolabral or bony lesion. While the empirical recurrence risk of young contact athletes is already high, it can be further impaired by bony defects of the glenoid. In suspected cases, critical glenoid defects should be quantified by computed tomography (CT) scans and treated by bony augmentation of the glenoid.
Literatur
Eisenhart-Rothe R, Mayr HO, Hinterwimmer H, Graichen H (2010) Simultane 3D-Bestimmung der glenohumeralen Gelenkkonfiguration, Humeruskopfzentrierung und Skapularposition bei Patienten mit atraumatischer Schulterinstabilität. Obere Extrem 4:209–216
Kibler WB, Sciascia A, Wilkes T (2012) Scapular dyskinesis and its relation to shoulder injury. J Am Acad Orthop Surg 20:364–372. doi:10.5435/JAAOS-20-06-364
Inman VT, Saunders JB, Abbott LC (1996) Observations of the function of the shoulder joint. 1944. Clin Orthop Relat Res 330:3–12
Boileau P, Zumstein M, Balg F et al (2011) The unstable painful shoulder (UPS) as a cause of pain from unrecognized anteroinferior instability in the young athlete. J Shoulder Elbow Surg 20:98–106. doi:10.1016/j.jse.2010.05.020
Jones KJ, Kahlenberg CA, Dodson CC et al (2012) Arthroscopic capsular plication for microtraumatic anterior shoulder instability in overhead athletes. Am J Sports Med 40:2009–2014. doi:10.1177/0363546512453299
Zemek MJ, Magee DJ (1996) Comparison of glenohumeral joint laxity in elite and recreational swimmers. Clin J Sport Med 6:40–47
Burkhart SS, Morgan CD, Kibler WB (2003) The disabled throwing shoulder: spectrum of pathology Part I: pathoanatomy and biomechanics. Arthroscopy 19:404–420. doi:10.1053/jars.2003.50128
Borsa PA, Laudner KG, Sauers EL (2008) Mobility and stability adaptations in the shoulder of the overhead athlete: a theoretical and evidence-based perspective. Sports Med 38:17–36
Saito H, Itoi E, Sugaya H et al (2005) Location of the glenoid defect in shoulders with recurrent anterior dislocation. Am J Sports Med 33:889–893
Sugaya H, Moriishi J, Dohi M et al (2003) Glenoid rim morphology in recurrent anterior glenohumeral instability. J Bone Joint Surg [Am] 85-A:878–884
Yamamoto N, Itoi E, Abe H et al (2009) Effect of an anterior glenoid defect on anterior shoulder stability: a cadaveric study. Am J Sports Med 37:949–954
Griffith JF, Antonio GE, Tong CW, Ming CK (2003) Anterior shoulder dislocation: quantification of glenoid bone loss with CT. AJR Am J Roentgenol 180:1423–1430
Burkhart SS, De Beer JF (2000) Traumatic glenohumeral bone defects and their relationship to failure of arthroscopic Bankart repairs: significance of the inverted-pear glenoid and the humeral engaging Hill-Sachs lesion. Arthroscopy 16:677–694
Pink MM, Tibone JE (2000) The painful shoulder in the swimming athlete. Orthop Clin North Am 31:247–261
Hawkins RJ, Kennedy JC (1980) Impingement syndrome in athletes. Am J Sports Med 8:151–158
Bak K (1996) Nontraumatic glenohumeral instability and coracoacromial impingement in swimmers. Scand J Med Sci Sports 6:132–144
Heinlein SA, Cosgarea AJ (2010) Biomechanical considerations in the competitive swimmer’s shoulder. Sports Health 2:519–525. doi:10.1177/1941738110377611
Rupp S, Berninger K, Hopf T (1995) Shoulder problems in high level swimmers – impingement, anterior instability, muscular imbalance? Int J Sports Med 16:557–562. doi:10.1055/s-2007-973054
Weldon EJ 3rd, Richardson AB (2001) Upper extremity overuse injuries in swimming. A discussion of swimmer’s shoulder. Clin Sports Med 20:423–438
Borsa PA, Wilk KE, Jacobson JA et al (2005) Correlation of range of motion and glenohumeral translation in professional baseball pitchers. Am J Sports Med 33:1392–1399. doi:10.1177/0363546504273490
Crockett HC, Gross LB, Wilk KE et al (2002) Osseous adaptation and range of motion at the glenohumeral joint in professional baseball pitchers. Am J Sports Med 30:20–26
Drakos MC, Barker JU, Osbahr DC et al (2010) Effective glenoid version in professional baseball players. Am J Orthop (Belle Mead NJ) 39:340–344
Osbahr DC, Cannon DL, Speer KP (2002) Retroversion of the humerus in the throwing shoulder of college baseball pitchers. Am J Sports Med 30:347–353
Mihata T, Gates J, McGarry MH et al (2013) Effect of posterior shoulder tightness on internal impingement in a cadaveric model of throwing. Knee Surg Sports Traumatol Arthrosc. doi:10.1007/s00167–013-2381-7
Mihata T, McGarry MH, Kinoshita M, Lee TQ (2010) Excessive glenohumeral horizontal abduction as occurs during the late cocking phase of the throwing motion can be critical for internal impingement. Am J Sports Med 38:369–374. doi:10.1177/0363546509346408
Mihata T, McGarry MH, Tibone JE et al (2008) Biomechanical assessment of type II superior labral anterior-posterior (SLAP) lesions associated with anterior shoulder capsular laxity as seen in throwers: a cadaveric study. Am J Sports Med 36:1604–1610. doi:10.1177/0363546508315198
Owens BD, Agel J, Mountcastle SB et al (2009) Incidence of glenohumeral instability in collegiate athletics. Am J Sports Med 37:1750–1754. doi:10.1177/0363546509334591
Chahal J, Leiter J, McKee MD, Whelan DB (2010) Generalized ligamentous laxity as a predisposing factor for primary traumatic anterior shoulder dislocation. J Shoulder Elbow Surg 19:1238–1242. doi:10.1016/j.jse.2010.02.005
Robinson CM, Howes J, Murdoch H et al (2006) Functional outcome and risk of recurrent instability after primary traumatic anterior shoulder dislocation in young patients. J Bone Joint Surg [Am] 88:2326–2336. doi:10.2106/JBJS.E.01327
Marquardt B, Pötzl W, Steinbeck J (2006) „State of the Art“: Operative Therapie der rezidivierenden, traumatischen vorderen Schulterinstabilität. Obere Extrem 1:31–36
Robinson CM, Jenkins PJ, White TO et al (2008) Primary arthroscopic stabilization for a first-time anterior dislocation of the shoulder. A randomized, double-blind trial. J Bone Joint Surg [Am] 90:708–721. doi:10.2106/JBJS.G.00679
Thomazeau H, Courage O, Barth J et al (2010) Can we improve the indication for Bankart arthroscopic repair? A preliminary clinical study using the ISIS score. Orthop Traumatol Surg Res 96(8 Suppl):S77–S83. doi:10.1016/j.otsr.2010.09.007
Einhaltung ethischer Richtlinien
Interessenkonflikt. M. Wellmann, M.F. Pastor, T. Smith, M. Struck geben an, dass kein Interessenkonflikt besteht. Dieser Beitrag beinhaltet keine Studien an Menschen oder Tieren.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Pastor, M., Smith, T., Struck, M. et al. Stabilität versus Mobilität der Schulter. Orthopäde 43, 209–214 (2014). https://doi.org/10.1007/s00132-013-2142-9
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00132-013-2142-9