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Complicated acromioclavicular joint cyst with massive rotator cuff tear
1Department of Orthopedic Surgery, Dongsan Medical Center, School of Medicine, Keimyung University, Daegu, Korea. oscho5362@dsmc.or.kr.
Acromioclavicular (AC) joint cysts often indicate rotator cuff tears. Treating only the cyst risks infection and recurrence; address both for effective management.
Area of Science:
- Orthopedics
- Sports Medicine
- Surgical Pathology
Background:
- Acromioclavicular (AC) joint cysts are uncommon findings associated with rotator cuff tears.
- Degenerative changes in the AC joint can predispose individuals to these cysts.
Observation:
- This study reports two cases of infected AC joint cysts secondary to massive rotator cuff tears.
- The infections arose after simple cyst excision, highlighting potential complications.
Findings:
- AC joint cysts frequently coexist with full-thickness rotator cuff tears.
- Inadequate treatment of the underlying rotator cuff tear leads to high cyst recurrence rates.
- Simple cyst aspiration or excision is not recommended due to risks of recurrence, draining sinus, and infection.
Implications:
- Physicians must consider underlying rotator cuff pathology in patients with AC joint cysts.
- Symptomatic AC joint cysts warrant surgical intervention that addresses both the cyst and the rotator cuff tear.
- Lateral clavicle resection may be necessary for irreparable rotator cuff tears.
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