ISAKOS: 2019 Congress in Cancun, Mexico

2019 ISAKOS Biennial Congress ePoster #1815


The Incidence of Traumatic Posterior and Combined Labral Tears in Patients Undergoing Arthroscopic Shoulder Stabilization

Mohamed A. Imam, MD, MSc, DSportMed, PhD, FRCS, Esher, Surrey UNITED KINGDOM
Puneet Monga, FRCS, Wigan UNITED KINGDOM
Lennard Funk, FRCS(Tr&Orth), Bolton, Lancashire UNITED KINGDOM
Michael Walton, FRCS, Wigan UNITED KINGDOM

Wrightington Hospital, Wrightington, UNITED KINGDOM

FDA Status Not Applicable


The incidence of traumatic posterior and combined labral tears in patients undergoing arthroscopic shoulder stabilisation



To assess the incidence and nature of capsulolabral pathology in a large cohort of patients with surgically treated traumatic shoulder instability, both in sporting and non-sporting populations.


Posterior and combined shoulder instabilities are believed to be rare, accounting for only 2% to 5% of cases. More recently an increased incidence of posterior and combined shoulder instabilities in young, active populations has been reported.


This was a retrospective study which evaluated 442 patients who underwent an examination under anaesthesia, arthroscopic assessment of the glenoid capsulolabral structures and subsequent repairs over a three-year period. Patients were categorised according to the location of their labral pathology (anterior, posterior, or combined anterior and posterior) and whether their injury was sustained during sporting or non-sporting activity. Proportions of labral tears between sporting and non-sporting populations were compared using the Chi square test and values were regarded as statistically significant when p<0.05.


The total cohort had a mean age of 25.9 years and 89.6% of patients were male; 74.9% of patients were categorised as sporting (n=331). Isolated anterior labral tears occurred in 52.9% (n=234) with posterior and combined labral tears accounting for 16.3% (n=72) and 30.8% respectively (n=136). In the non-sporting population 68.5% (n=76) of patients had isolated anterior labral tears with 12.6% (n=14) posterior and 18.9% (n=21) combined. A significant difference was noted when compared to the sporting group, where isolated anterior labral tears accounted for 47.7% (n=158), posterior 17.5% (n=58) and combined 34.7% (n=115) (p=0.013).


Posterior and combined labral tears are more prevalent than previously reported. Careful assessment for posterior instability both clinically and arthroscopically is mandatory in all instability cases, particularly in the sporting population.