📚 Sacroiliac Joint Dysfunction (SIJD) – Complete Study Guide for DPT Students
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Definition
Sacroiliac Joint Dysfunction (SIJD) refers to abnormal movement or inflammation of the sacroiliac joints, causing pain in the low back, buttocks, or legs.
Anatomy Overview
· SI joint: A synovial plane joint between the sacrum and ilium.
· Ligament support:
Anterior SI ligament
Interosseous ligament (strongest)
Posterior SI ligament
· Function: Transfers weight from upper body to lower limbs and provides stability with limited mobility.
Etiology / Causes
Mechanical | Inflammatory | Traumatic |
Leg length discrepancy | Ankylosing spondylitis | Fall on buttocks |
Pregnancy | Rheumatoid arthritis | MVA (motor vehicle accident) |
Muscle imbalance | Psoriatic arthritis | Lifting injuries |
Clinical Features
· Localized pain near the PSIS
· Pain radiating to buttocks, posterior thigh, or groin
· Aggravated by prolonged sitting, standing, stair climbing
· Reduced lumbo-pelvic mobility
· May feel leg giving way or asymmetrical gait
Differential Diagnosis
Condition | Distinctive Sign |
Lumbar disc herniation | Positive SLRT |
Piriformis syndrome | Tender piriformis muscle |
Hip pathology | Pain on FABER test |
Sciatica | Radicular pattern down to foot |
SI Joint Provocative Tests (Cluster)
At least 3 out of 5 positives = SIJ origin likely:
1. Distraction Test
1. Compression Test
1. Thigh Thrust Test
1. Gaenslen’s Test
3. Sacral Thrust Test
Functional Assessments
· Gait analysis: Asymmetrical stride
· Leg length check
· Palpation: PSIS tenderness, muscle tightness
· Movement testing: Standing flexion test
Management Plan
Acute Phase
· Rest and activity modification
· Ice/heat therapy
· SI belt for support
· Gentle pelvic tilts
· Soft tissue release of glutes/piriformis
♀️ Sub-Acute to Chronic Phase
· Muscle energy techniques (MET) to correct alignment
· Strengthening:
o Gluteus medius
o Transversus abdominis
o Multifidus
· Pelvic stabilization exercises
· SIJ mobilizations (Grade I-II initially)
Patient Education
· Postural training
· Avoid prolonged standing/sitting
· Proper lifting techniques
Manual Therapy Techniques
· Posterior innominate MET
· Anterior innominate MET
· Sacral mobilizations (AP glides)
Home Exercise Program
Exercise | Reps |
Pelvic tilts | 10–15 |
Glute bridge | 10 reps, 3 sets |
Clamshells | 15 each side |
SI joint isometric squeeze | 5 sec hold, 10 reps |
Red Flags (Refer Out)
· Radiating pain below the knee with positive SLRT
· Bowel/bladder issues
· History of trauma with inability to bear weight
Conclusion
SIJD is often underdiagnosed but causes significant functional limitations. A focused assessment combined with stabilization and manual therapy gives excellent outcomes.
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