What is the articular surface of the sacroiliac joint?

What is the articular surface of the sacroiliac joint?

The articular surface is made up of two, strong, C-shaped layers. It is distinguished from other synovial joints by the unusual articulation of two different types of cartilage. The sacral capsular surface is composed of hyaline cartilage while the iliac capsular surface is composed of fibrocartilage.

Where are sacroiliac joints located?

The sacroiliac joints link your pelvis and lower spine. They’re made up of the sacrum — the bony structure above your tailbone and below your lower vertebrae — and the top part (ilium) of your pelvis. There are sacroiliac joints in both the right and left sides of your lower back.

Which structures are related to the sacroiliac joint?

The articulation between the outer side of the spine’s sacrum and the inner side of the butterfly-shaped hip bone (ilium) forms the sacroiliac joint. The SI joints are located on either side of the sacral spine and are situated deep in the pelvis. Each SI joint is secured and well protected by strong ligaments.

What does SI joint pain feel like?

You may experience sacroiliac (SI) joint pain as a sharp, stabbing pain that radiates from your hips and pelvis, up to the lower back, and down to the thighs. Sometimes it may feel numb or tingly, or as if your legs are about to buckle.

How do you palpate the sacroiliac joint?

Palpation may be the most reliable indication of SIJ pain. The patient usually places a thumb directly onto one particular spot in the dimple of the PSIS (sacral sulcus). The patient can usually precisely reproduce the pain over that one spot (Fortin finger sign).

Can poor posture cause SI joint pain?

Causes of SI Joint Pain Pelvic misalignments can be caused by poor posture, prolonged sitting, pregnancy or childbirth. Damage or change to the laxity of the ligaments around the SI joint can also lead to pain.

How do you know if your SI joint is out of place?

Common presenting symptoms include low back pain often found on only one side, that is worsened with prolonged sitting/standing or specific mechanical movements. Other symptoms include buttock pain or radiating pain, numbness, or tingling in the hips, groin, or legs.

What are the main ligaments of the sacroiliac joint?

The main ligaments of the joint are anterior and posterior sacroiliac ligaments, while additional stability is provided with accessory ligaments: sacrotuberous ligament and sacrospinous ligament.

Is heat or ice better for SI joint pain?

Ice applied to the low back and pelvis can reduce inflammation and alleviate pain and discomfort. Heat applied around the joint may help relieve pain by reducing muscle tension or spasms.

What aggravates SI joint pain?

What aggravates SI joint pain? Heavy impact activities such a running, jumping, contact sports, labor intensive jobs, or even standing for prolonged periods of time can aggravate your SI joint related pain. Deconditioned and weak abdominal, gluteal, and spinal muscles can also contribute to worsening pain.

Which test is best for identifying sacroiliac joint dysfunction?

Sacroiliac Joint Injection: Another Test for SI Joint Pain Injections are one the most accurate methods of diagnosing SI joint dysfunction.

What is the Fortin finger test?

In the Fortin finger test, the patient points to the area of pain with one finger. The result is positive if the site of pain is within 1 cm of the PSIS, generally inferomedially. The Patrick test or Faber maneuver involves flexion, abduction, and external rotation of the hip.