[Damage to the glenoid labrum and expert assessment]

Area of Science:

• Orthopedic Surgery
• Sports Medicine
• Medical-Legal Interpretation

Background:

• Labral lesions in the shoulder joint are diverse and can result from various causes, including intra-articular diseases, chronic fatigue, or acute injury.
• The stability of the shoulder joint and the tension of the long head of the biceps tendon are critical factors in labral pathology.
• Current classifications for medical-legal interpretation of labral lesions are often inadequate or confusing.

Purpose of the Study:

• To develop improved criteria for the medical-legal interpretation of glenoid labral lesions.
• To correlate labral pathology with specific injury mechanisms.
• To propose a new, more effective classification system for labral lesions.

Main Methods:

• A comprehensive meta-analysis of existing literature on shoulder injuries involving the glenoid labrum was conducted.
• Analysis focused on arthroscopic classifications and reported mechanisms of injury.
• A novel classification system was developed by drawing parallels with meniscal pathology.

Main Results:

• Labral lesions (superior, anterior, posterior) vary in severity and presentation.
• No direct correlation was identified between the specific type of labral lesion and the mechanism of injury.
• A new classification distinguishes between degenerative (Type 1) and instability-related (Type 2) labral lesions.

Conclusions:

• Medical-legal interpretation of labral lesions should adopt principles similar to those used for knee meniscal tears and instability.
• The proposed classification, based on degenerative versus instability-related pathology, offers a clearer framework.
• Traumatic shoulder luxations are the primary cause of isolated labral tears without other associated injuries.