A small bursa between the supraspinous ligament and the overlying skin at the lumbar spinous processes, developing from sustained flexion postures or direct pressure in thin individuals. It is most common at L3-L5 spinous process tips.
Lumbar supraspinous bursitis produces midline posterior lumbar pain that worsens with sustained trunk flexion and direct pressure. It is distinguished from supraspinous ligament tear by its superficial, fluctuant nature on palpation. Common in individuals who sleep or work in prolonged lumbar flexion. Aspiration and padding are curative.
Superficial bursal swelling at the lumbar spinous process producing midline back pain from sustained flexion pressure, easily treated with aspiration and posture modification.
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