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Labral Lesion: Causes, Symptoms & Treatment
A labral lesion is an injury to the labrum, the fibrocartilage ring of the hip or shoulder joint, causing pain, clicking, and restricted movement.
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A labral lesion is an injury to the labrum, the fibrocartilage ring of the hip or shoulder joint, causing pain, clicking, and restricted movement.
What Is a Labral Lesion?
A labral lesion refers to damage or a tear of the labrum – a ring-shaped fibrocartilage structure lining the rim of the hip or shoulder joint socket. The labrum deepens the joint socket, enhances stability, distributes pressure loads, and acts as a seal for the synovial fluid. When injured, it significantly impairs both joint stability and overall function.
Causes
Labral lesions can develop through several different mechanisms:
- Traumatic causes: Falls onto the shoulder, sudden rotational movements, or joint dislocations (luxations).
- Degenerative causes: Wear and tear from repetitive loading over time, commonly seen in older patients.
- Sports overuse: Throwing sports (baseball, handball), martial arts, swimming, or hip-rotation sports such as ballet and golf.
- Anatomical variants: Femoroacetabular impingement (FAI) of the hip or congenital shoulder instability increases the risk of labral tears.
Symptoms
Symptoms vary depending on the affected joint but share common features:
- Deep joint pain that is often difficult to localize and intensifies with specific movements.
- Clicking, snapping, or catching sensations in the joint during motion.
- Limited range of motion and stiffness, especially after periods of rest.
- A feeling of instability, as if the joint might give way or dislocate.
- In hip labral tears: groin pain that may radiate to the inner thigh or buttock.
- In shoulder labral tears: pain with overhead movements or while sleeping on the affected side.
Diagnosis
Diagnosing a labral lesion requires a combination of clinical examination and imaging:
- Clinical tests: Specific maneuvers such as the FABER test (hip) or the O'Brien test (shoulder) indicate potential labral damage.
- MRI (Magnetic Resonance Imaging): The preferred imaging method; MR arthrography with contrast agent provides the most accurate visualization of labral tears.
- Arthroscopy: Direct joint visualization is considered the gold standard for definitive diagnosis and allows simultaneous surgical treatment.
- Ultrasound and X-ray: Complementary methods used to rule out other conditions.
Treatment
Conservative Treatment
Milder labral lesions may initially be managed conservatively:
- Rest and reduction of joint loading.
- Physiotherapy to strengthen the muscles surrounding the joint and improve stability.
- Pain management with anti-inflammatory medications (e.g., NSAIDs such as ibuprofen).
- Intra-articular corticosteroid injections for short-term pain relief.
Surgical Treatment
When conservative measures are insufficient, surgical intervention is indicated:
- Arthroscopic labral repair: The torn labrum is reattached to the bone using suture anchor techniques (refixation).
- Labral reconstruction: In cases of severely damaged tissue, reconstruction using autograft tissue may be necessary.
- Labral debridement (resection): Removal of non-reconstructable tissue; this approach is performed less frequently today.
- Simultaneous treatment of associated pathologies (e.g., bony correction for FAI).
Rehabilitation
Surgery is followed by a structured rehabilitation program including physiotherapy, targeted strengthening exercises, and a gradual return to activity over several weeks to months. Full return to sport is typically possible after 3 to 6 months.
References
- Ganz R, Parvizi J, Beck M, Leunig M, Nötzli H, Siebenrock KA. Femoroacetabular impingement: a cause for osteoarthritis of the hip. Clinical Orthopaedics and Related Research. 2003;417:112-120.
- Minkara AA, Westermann RW, Rosneck J, Lynch TS. Systematic Review and Meta-analysis of Outcomes After Hip Arthroscopy in Femoroacetabular Impingement With Labral Tears. The American Journal of Sports Medicine. 2019;47(2):488-500.
- Lippitt SB, Matsen FA. Mechanisms of glenohumeral joint stability. Clinical Orthopaedics and Related Research. 1993;291:20-28.
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