[Hip pain--a problem of differential diagnosis in the primary care practice]

Area of Science:

• Orthopedics
• Sports Medicine
• Radiology

Context:

• Groin pain diagnosis requires differentiating intra-articular hip pathology from extra-articular causes.
• The capsular pattern is a key radiographic sign in evaluating hip joint disorders.
• Pelvic girdle pain encompasses conditions beyond the hip joint, including trauma and chronic inflammatory issues.

Purpose:

• To elucidate the diagnostic significance of the capsular pattern in groin pain.
• To categorize conditions causing groin pain based on the presence or absence of a capsular pattern.
• To differentiate hip joint pathology from other causes of pelvic pain.

Summary:

• A positive capsular pattern indicates intra-articular hip pathology, including slipped capital femoral epiphysis, Legg-Calvé-Perthes disease, femoral head necrosis, and coxarthrosis.
• Conditions like inguinal hernia, osteitis pubis, and adductor tendinosis lack a capsular pattern.
• Pelvic girdle pain, often unrelated to the hip joint, can stem from trauma or chronic tendinosis/bursitis.

Impact:

• Improves diagnostic accuracy for clinicians managing patients with hip and groin pain.
• Facilitates targeted treatment by distinguishing between hip joint and other pelvic pathologies.
• Enhances understanding of the etiology of both acute and chronic pelvic girdle pain.