Soft tissue constraint injuries in complex elbow instability: prevalence, pathoanatomy, and classification.

Area of Science:

• Orthopedic Surgery
• Sports Medicine
• Anatomy

Background:

• Complex elbow instability is often linked to soft tissue constraint injuries.
• The specific types and prevalence of these injuries are not well-documented.
• Understanding these lesions is crucial for effective treatment.

Purpose of the Study:

• To analyze intraoperative findings of soft tissue constraint injuries in complex elbow instability.
• To develop a comprehensive classification system for these elbow lesions.
• To guide surgical planning and treatment strategies.

Main Methods:

• Prospective analysis of 47 patients undergoing surgery for complex elbow instability.
• Classification of ligament injuries (simple vs. complex, zone involvement).
• Classification of posterolateral capsule injuries (size) and muscle lesions.

Main Results:

• Ligament injuries were present in 96% of patients.
• Complex lateral collateral ligament lesions (middle-zone with avulsion) were common (47%).
• Posterolateral capsule lesions (small: 49%, large: 17%) and medial collateral ligament injuries (45%) were also prevalent.

Conclusions:

• Complex elbow instability is frequently associated with significant soft tissue constraint lesions.
• Pre- and intraoperative evaluation of soft tissue status is essential.
• The proposed classification aids in planning treatment for these complex injuries.