This document summarizes a study evaluating the clinical outcomes of direct arthroscopic acromioclavicular (AC) joint excision for osteolysis. Osteolysis of the AC joint is caused by excessive overhead motions and is commonly seen in weightlifters and rugby players, causing pain and limited shoulder range of motion. The study retrospectively reviewed 16 patients who underwent direct arthroscopic AC joint excision over a 2 year period. Patients showed significant improvements in their Constant Shoulder Score and QuickDASH score between pre-op and post-op assessments at a mean follow-up of 21 months. Patients also reported high satisfaction ratings. The study concluded that direct arthroscopic AC joint excision is an effective treatment for osteolysis with significant

1. Acromioclavicular (AC) Joint
Excision
due to Osteolysis
• Lennard Funk
• Jameson Lua

2. Acromioclavicular (AC) Joint Osteolysis
• Bone eroded faster than it is replaced
• Caused by excessive overhead motions
• Commonly seen in:
• Weightlifters
• Rugby players
• Symptoms
• Pain & tenderness
• Limited range of motion AC Joint Clavicle
Acromion

3. Management
• Conservative
• Steroid injection
• Surgical - joint excision
• Open
• Arthroscopic
• Direct
• Indirect

4. Current Literature
• Direct arthroscopic technique
• No previous large studies
• Only 1 clinical review in 1995
• 29 patients
• 93% satisfactory results at 2 year follow-up

5. Aims
• Evaluate clinical outcomes
• Direct arthroscopic AC joint excision
• For osteolysis

6. Methods
• Inclusion criteria
• Procedures over 2 year period
• 16 patients identified
• Outcome measures
• Constant Shoulder Score
• QuickDASH score
• Satisfaction rating

7. Methods
• Data collection
• Pre-operative scores
• Bluespier database
• Post-operative scores
• Online questionnaire
• Telephone interview
• Follow-up period
• Mean: 21 months
• Standard Deviation: 10.7

8. Results – Demographics
• Age
• Mean: 33.6 years
• Standard Deviation:
12.2
• Gender
• Male: 16 (87%)
• Female: 2 (13%)
• Sport Level
• Professional: 9
• Semi-Pro: 1
• Leisure: 6

9. Results – Shoulder Scores
Shoulder
Score
Pre-Op
Mean
Post-Op
Mean
Differenc
e in
Means
Standard
Deviation
P value
(Paired t-
Constant 52.3 87.3 +35.0 20.94 <0.001
QuickDA
SH
30.5 6.8 -23.7 17.55 0.012

10. Results – Patient Satisfaction
Mean Rating
Standard
Deviation
Satisfaction 88% 25.5

11. Discussion
• Limitations
• Retrospective study
• Limited number of patients

12. Conclusions
• Surgical Outcomes
• Effective
• Improvement in post-operative scores significant
• After 21 months
• High satisfaction ratings

13. Acknowledgements
• Tanya MacKenzie
• http://www.shoulderdoc.co.uk/article.asp?article=1280

14. Questions