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Reverse Total Shoulder Arthroplasty
Published on: July 5, 2011
Posterior and multidirectional instability of the shoulder
Andrew D Heinzelmann1, Felix H Savoie
1Mississippi Sports Medicine and Orthopaedic Center, Jackson, Mississippi, USA.
Instructional Course Lectures
|April 24, 2009
Summary
Diagnosing shoulder instability can be challenging, with posterior and multidirectional types sharing symptoms but differing in causes and treatments. Non-surgical methods like physical therapy are often effective, with surgery as a secondary option.
Area of Science:
- Orthopedic Surgery
- Sports Medicine
- Biomechanics
Background:
- The shoulder joint is prone to instability, presenting diagnostic challenges.
- Posterior and multidirectional shoulder instability share symptoms but have distinct origins and treatment needs.
- A lack of consistent definition for multidirectional instability complicates diagnosis and management.
Purpose of the Study:
- To clarify the diagnostic difficulties in differentiating posterior and multidirectional shoulder instability.
- To outline the distinct etiologies and treatment requirements for these two conditions.
- To review current treatment strategies for shoulder instability.
Main Methods:
- Review of existing literature on shoulder instability, focusing on posterior and multidirectional types.
- Analysis of diagnostic criteria and clinical presentations.
- Evaluation of treatment outcomes for conservative and surgical interventions.
Main Results:
- Differentiating posterior and multidirectional instability is clinically challenging due to overlapping symptoms.
- Posterior instability has a clearer definition, yet diagnosis remains difficult.
- Rehabilitation and bracing are primary treatments for most patients.
- Arthroscopic surgery offers satisfactory outcomes when non-surgical treatments fail.
Conclusions:
- Accurate diagnosis of shoulder instability direction is crucial for appropriate treatment.
- Conservative management, including physical therapy and bracing, is the first line of treatment.
- Surgical intervention, particularly arthroscopy, is a viable option for refractory cases.
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