Related Experiment Video
Updated: Jun 12, 2026
05:44
Arthroscopic Excision of Posterior Cruciate Ligament Cysts Using a Double Posteromedial Approach
Published on: October 20, 2023
Multidirectional instability accompanying an inferior labral cyst.
Chang-Yun Moon1, Jong-Hun Ji, Sung-Jae Kim
1Department of Orthopedic Surgery, Daejeon St. Mary's Hospital, The Catholic University College of Medicine, Daejeon, Korea. osmcy@naver.com
Clinics in Orthopedic Surgery
|June 2, 2010
Summary
Paralabral cysts of the shoulder joint are uncommon, especially when associated with shoulder instability. This case highlights a rare instance of an inferior paralabral cyst linked to inferior labral tears and instability, as seen on MRI.
Area of Science:
- Orthopedics
- Radiology
- Sports Medicine
Background:
- Paralabral cysts of the shoulder joint affect 2-4% of the population, typically men aged 30-40.
- These cysts are often postero-superior on the glenoid and measure 10-20 mm.
- Magnetic Resonance Imaging (MRI) has improved the diagnosis frequency of these cysts.
Observation:
- Paralabral cysts usually develop near the shoulder labrum.
- While labral tears are linked to shoulder instability, paralabral cysts are rarely associated.
- This association can be bidirectional: instability causing labral injury, or labral injury leading to cyst formation.
Findings:
- The patient presented with an inferior paralabral cyst.
- This cyst was potentially associated with inferior labral tears.
- Shoulder instability was also noted in conjunction with the cyst and labral tear.
Implications:
- This case underscores the rare association between paralabral cysts and shoulder instability.
- It suggests that inferior labral tears may lead to inferior paralabral cysts.
- Further investigation into the biomechanics of labral tears and cyst formation in shoulder instability is warranted.
