PMID- 23313371
OWN - NLM
STAT- MEDLINE
DCOM- 20140220
LR  - 20161018
IS  - 1532-6500 (Electronic)
IS  - 1058-2746 (Linking)
VI  - 22
IP  - 7
DP  - 2013 Jul
TI  - The effect of simulated scapular winging on glenohumeral joint translations.
PG  - 986-92
LID - S1058-2746(12)00412-0 [pii]
LID - 10.1016/j.jse.2012.09.010 [doi]
AB  - HYPOTHESIS: In this study, we aim to test whether scapular winging results in a 
      significant change in glenohumeral translation in the initial phase of the 
      throwing motion. METHODS: Six shoulders underwent an abbreviated throwing motion 
      (ATM) from late cocking to the end of acceleration by use of a validated robotic 
      system. The intact specimens were tested to establish a baseline. The position of 
      the scapula was then affected to simulate scapular winging by placing a 
      cylindrical wedge under the inferior angle of the scapula, and the ATM was 
      performed again. For both conditions, the average glenohumeral translations and 
      scapular rotations were plotted over time to calculate the area under the curve, 
      as a representative of the overall glenohumeral translations and scapular 
      rotations observed during the ATM. RESULTS: Throughout the motion, the winged 
      scapulae showed, on average, 7.7 degrees  more upward rotation, 1.6 degrees  more internal 
      rotation, and 5.3 degrees  more anterior tipping as compared with the baseline. The 
      scapular position relative to the hanging arm was significantly different between 
      the baseline and scapular winging conditions in all arm positions, except for 
      maximal external rotation and the neutral position. Comparing the area under the 
      curve at baseline and with scapular winging indicated that scapular winging 
      significantly increased anterior translation of the glenohumeral joint whereas 
      translation in the superior/inferior and medial/lateral directions did not result 
      in a change in translation. DISCUSSION: These results may suggest a more 
      important role of abnormalities in scapular position in predisposing throwing 
      athletes to shoulder injuries of the anterior capsulolabral structures and 
      consecutive glenohumeral instability.
CI  - Copyright (c) 2013 Journal of Shoulder and Elbow Surgery Board of Trustees. 
      Published by Mosby, Inc. All rights reserved.
FAU - Mueller, Andreas M
AU  - Mueller AM
AD  - Center for Advanced Orthopaedic Studies, Beth Israel Deaconess Medical Center and 
      Harvard Medical School, Boston, MA, USA.
FAU - Entezari, Vahid
AU  - Entezari V
FAU - Rosso, Claudio
AU  - Rosso C
FAU - McKenzie, Brett
AU  - McKenzie B
FAU - Hasebrock, Andrew
AU  - Hasebrock A
FAU - Cereatti, Andrea
AU  - Cereatti A
FAU - Della Croce, Ugo
AU  - Della Croce U
FAU - Deangelis, Joseph P
AU  - Deangelis JP
FAU - Nazarian, Ara
AU  - Nazarian A
FAU - Ramappa, Arun J
AU  - Ramappa AJ
LA  - eng
PT  - Comparative Study
PT  - Journal Article
DEP - 20130111
PL  - United States
TA  - J Shoulder Elbow Surg
JT  - Journal of shoulder and elbow surgery
JID - 9206499
SB  - IM
MH  - Athletic Injuries/prevention & control
MH  - Biomechanical Phenomena
MH  - Cadaver
MH  - Humans
MH  - Joint Instability/*physiopathology
MH  - Male
MH  - Middle Aged
MH  - Models, Anatomic
MH  - ROC Curve
MH  - Range of Motion, Articular/*physiology
MH  - Rotation
MH  - Scapula/*abnormalities/*physiopathology
MH  - Shoulder Joint/*physiology
MH  - *Sports
EDAT- 2013/01/15 06:00
MHDA- 2014/02/22 06:00
CRDT- 2013/01/15 06:00
PHST- 2012/05/22 00:00 [received]
PHST- 2012/09/13 00:00 [revised]
PHST- 2012/09/17 00:00 [accepted]
PHST- 2013/01/15 06:00 [entrez]
PHST- 2013/01/15 06:00 [pubmed]
PHST- 2014/02/22 06:00 [medline]
AID - S1058-2746(12)00412-0 [pii]
AID - 10.1016/j.jse.2012.09.010 [doi]
PST - ppublish
SO  - J Shoulder Elbow Surg. 2013 Jul;22(7):986-92. doi: 10.1016/j.jse.2012.09.010. 
      Epub 2013 Jan 11.