PSOAS MAJOR
• Origin
Lumbar vertebrae, intervertebral discs
• Insertion
Lesser trochanter of femur
• Agonist(s)
- Iliacus
- Psoas minor
• Antagonist(s)
- Gluteus maximus
• Function
Hip flexion
TRIGGER POINT(S)
• Location
Trigger points in the psoas major muscle are typically located deep within the abdominal cavity, along the lumbar spine, and can be palpated near the lower back, pelvis, and upper thigh.
These trigger points are found along the muscle's length, from its origin at the lumbar vertebrae (L1-L5) to its insertion at the lesser trochanter of the femur.
• Pain Referral Pattern
Pain may refer to the lower back, groin, and anterior thigh.
It can cause deep, aching pain in the lower back and pelvis, and may contribute to discomfort or tightness in the hip and thigh, sometimes mimicking symptoms of lumbar disc issues or hip flexor strain.
Pain Pattern
• Potential Causes
• Prolonged sitting or poor posture, especially with slumped or forward-leaning positions.
• Overuse or repetitive activities involving hip flexion, such as running, cycling, or sit-ups.
• Trauma or injury to the lower back or hip.
• Muscle imbalances between the psoas major and other core and hip muscles.
• Emotional stress and tension, which can cause the psoas to tighten.
• Prevention Tips
• Maintain good posture, especially while sitting, to reduce strain on the psoas major.
• Incorporate regular stretching and strengthening exercises for the hip and core muscles.
• Take breaks and change positions regularly during prolonged sitting.
• Use proper techniques during activities involving hip flexion to avoid overloading the psoas major.
• Manage stress through relaxation techniques and regular physical activity to reduce tension in the psoas.
