British Elbow and Shoulder Society, Shoulder and Elbow 2011 3, pp 166–170

Adrian J. Carlos, Andrew M. Richards & Steven A. Corbett

Upper Limb Unit, Guy’s & St Thomas’ Hospitals NHS Foundation Trust, London, UK

This study is the largest reported medium-term results with the follow-up of 45 patients who have undergone reconstruction for acromioclavicular joint dislocation using the Lockdown™ device (formerly Surgilig™).

The group of patients had a mean age of 37.6 years (range 19yrs to 67 yrs) and consisted of 32 males and 13 females.  Sixteen of the injuries were classified as Rockwood Type III, four as Type IV and 25 as Type V.

Seventeen of the cases were treated within 2 weeks of the original injury, whereas 28 were treated at a longer time interval.  The average interval from injury to operation was 7.2 months (range 0.5 to 120 months)

Forty one patients stated that they were satisfied with the procedure, and would undergo the same operation again if a similar problem occurred.  Four patients were not satisfied. Two had residual pain, one patient was unhappy with the cosmetic appearance and one patient was unhappy with both the cosmetic appearance and ongoing pain.

Thirty two of the patients showed no migration of the clavicle, when comparing immediate postoperative radiographs with those taken at the latest follow-up.  Migration was noted in 13 cases.  In this minority group, the mean migration was 6.3mm (range 3mm to 9mm).

Seven patients required further surgery, and one patient required an early revision because the Lockdown™ displaced within the first week.  Six patients required the screw to be removed because of skin irritation.  This was usually performed at approx. 9 months postoperatively and did not result in recurrent instability.

It concludes that both acute and chronic injuries have been successfully treated with high patient satisfaction and excellent functional results.  No significant complications or adverse reactions were encountered.

Find the complete paper here.