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Atlas · Hip

Gemelli and Obturator Internus

Deep posterior hip aching from trigger points in the small external hip rotator muscles

Body region
Hip
Trigger points
2
documented in this muscle
Common symptoms
8
patterns cataloged
Common causes
9
contributory factors

Trigger points

TrP 1

TrP1

Location. Deep hip rotators

Pain referral. Deep buttock, hip, posterior thigh

  • Deep buttock
  • Hip
  • Posterior thigh
  • Calf
TrP 2

TrP2

Location. Obturator internus belly deep in pelvis

Pain referral. Deep buttock and perineal region

  • Deep buttock (ischial area)
  • Perineal region
  • Posterior thigh (proximal)
  • Coccygeal area (mild)
  • Pelvic floor (referred)

Symptoms patients report

Deep buttock pain. Deep posterior hip aching from trigger points in the small external hip rotator muscles

Hip pain. Deep hip joint area discomfort from rotator trigger point referral mimicking joint pathology

Posterior leg pain. Referred ache down the posterior thigh from deep hip rotator trigger point radiation

Sitting pain. Ischial and deep buttock discomfort from compression of deep rotator trigger points

Pain with prolonged sitting. Sitting compresses deep pelvic rotator trigger points against ischium causing deep buttock pain

Perineal discomfort. Referred perineal ache from obturator internus trigger point through pelvic floor connections

Coccyx area ache. Referred coccygeal pain from deep pelvic rotator trigger points via coccygeus muscle connections

Pain with hip external rotation. Active external rotation contracts obturator internus aggravating deep pelvic trigger points

Common causes

Running. Repetitive hip rotation during running gait fatigues the small deep hip rotator muscles

Hip rotation activities. Sustained or repetitive external rotation movements overload deep hip rotators cumulatively

Sitting. Prolonged sitting compresses deep hip rotators between pelvis and seat causing ischemia

Hip instability. Insufficient hip stabilization increases compensatory deep rotator activation and overload

Prolonged sitting on hard surfaces. Sustained ischial compression on hard seats creates obturator internus ischemia and trigger points

Pelvic floor dysfunction. Pelvic floor hypertonicity creates obturator internus co-contraction developing secondary trigger points

Post-childbirth pelvic muscle trauma. Birth trauma to pelvic floor musculature creates obturator internus guarding and trigger points

Chronic hip external rotation posture. Habitual externally rotated hip posture shortens obturator internus promoting trigger point formation

Cycling (saddle pressure). Sustained saddle pressure compresses perineal region creating obturator internus trigger points

Treatment & self-care

immediate

Tennis ball on deep buttock (seated on chair)

Sit on a firm chair and place a tennis ball under the affected buttock, targeting the deep area between the sit bone and the outer hip. Shift your weight onto the ball and slowly roll to find the most tender spot. When you locate it, hold sustained pressure for 20-30 seconds. Adjust position slightly to work adjacent areas.

Duration
3-5 minutes per side
Frequency
1-2 times per day
Expect
Reduced deep buttock aching and improved sitting tolerance within 3-5 days
immediate

Figure-4 stretch (supine piriformis stretch)

Lie on your back with both knees bent. Cross the affected ankle over the opposite knee to form a figure-4 shape. Reach through and grasp behind the uncrossed thigh, pulling it gently toward your chest. You should feel a deep stretch in the buttock of the crossed leg. Keep your head and shoulders relaxed on the floor.

Duration
30 seconds per side, 3 repetitions
Frequency
3-4 times per day
Expect
Improved deep hip flexibility and reduced buttock pain within 1-2 weeks
exercise

Clamshell exercise with resistance band

Lie on your side with hips and knees bent to about 45 degrees and a light resistance band around both knees. Keeping your feet together, lift the top knee as high as you can without rotating your pelvis backward. Pause at the top for 2 seconds, then lower slowly. Focus on feeling the contraction deep in the buttock rather than at the outer hip.

Duration
3 sets of 15 repetitions per side
Frequency
Every other day
Expect
Stronger deep hip rotators with reduced trigger point susceptibility within 3-4 weeks
exercise

Hip external rotation isometrics

Sit in a chair with feet flat on the floor and knees bent to 90 degrees. Place a fist or small ball between your outer ankle and a table leg or wall. Press your ankle outward against the resistance without actually moving. Hold the contraction for 8-10 seconds, then relax. This gently strengthens the deep rotators without large joint movements.

Duration
10 repetitions of 8-10 second holds
Frequency
Daily
Expect
Improved deep rotator endurance and reduced pain with sustained sitting within 2-3 weeks
lifestyle

Seat cushion for prolonged sitting

Use a cushion designed to reduce pressure on the sit bones and deep buttock when sitting for extended periods. A memory foam or coccyx cushion works well. Also stand and walk briefly every 30-45 minutes to relieve sustained compression on the deep hip rotators. Avoid crossing your legs while seated.

Duration
Ongoing during seated activities
Frequency
Daily, whenever sitting for more than 30 minutes
Expect
Reduced sitting-related buttock pain and fewer trigger point flare-ups within 1-2 weeks
professional

Professional hip evaluation for persistent deep hip pain

If deep buttock pain persists beyond 4 weeks despite self-care, consult a physiotherapist or sports medicine specialist. They can differentiate deep hip rotator trigger points from piriformis syndrome, hip labral tears, sacroiliac dysfunction, or lumbar radiculopathy through targeted clinical testing and imaging. Manual therapy and dry needling can access these deep muscles more effectively than self-treatment.

Duration
Initial evaluation: 45-60 minutes
Frequency
Follow-up sessions as recommended, typically 1-2 per week for 4-6 weeks
Expect
Accurate diagnosis and targeted treatment resolving persistent deep buttock pain within 4-8 sessions
Key Takeaways
  1. Deep posterior hip aching from trigger points in the small external hip rotator muscles
  2. Deep hip joint area discomfort from rotator trigger point referral mimicking joint pathology
  3. Referred ache down the posterior thigh from deep hip rotator trigger point radiation
  4. Ischial and deep buttock discomfort from compression of deep rotator trigger points
  5. Sitting compresses deep pelvic rotator trigger points against ischium causing deep buttock pain