Dec 5, 2024 · Spontaneous osteonecrosis of the knee (SONK) is an idiopathic condition that leads to the development of a crescent shaped osteonecrosis lesion, mostly commonly in the epiphysis of the medial femoral condyle.

Dec 10, 2024 · The entity subsumes that previously known as spontaneous osteonecrosis of the knee (SONK/SPONK) or Ahlbäck disease.

Feb 28, 2024 · MRI findings in the subchondral bone marrow: a discussion of conditions including transient osteoporosis, transient bone marrow edema syndrome, SONK, and shifting bone marrow edema of the knee. Semin Musculoskelet Radiol.

Spontaneous osteonecrosis of the knee, often referred to as SONK, was historically referred to as an insufficiency reaction of the medial femoral condyle that occurred “spontaneously” could often go on to have insufficiency fractures and advanced arthritis of …

SONK should be considered together with differential diagnosis of osteoarthritis, tear of medial meniscus, and tibial plateau fracture. SONK usually has a sudden onset of knee pain, while osteoarthritis has a progressive, gradual onset of knee pain.

Spontaneous osteonecrosis of the knee, aka SONK, is a condition that causes acute unilateral knee pain. It was first described in 1968 in individuals in their sixth decade of life. SONK develops insidiously, which makes the diagnosis process quite challenging.

Elfeky M, Spontaneous osteonecrosis of the knee (SONK). Case study, Radiopaedia.org (Accessed on 08 Mar 2025) https://doi.org/10.53347/rID-66165

Nov 13, 2014 · Osteonecrosis is a devastating disease that can lead to end-stage arthritis of various joint including the knee. There are three categories of osteonecrosis that affect the knee: spontaneous osteonecrosis of the knee (SONK), secondary, and ...

Osteonecrosis of the knee is a painful condition that occurs when the blood supply to a section of the femur (thighbone) or tibia (shinbone) is disrupted. Because bone cells need a steady blood supply, osteonecrosis can lead to destruction of the knee joint and arthritis.

SONK is the most common form of osteonecrosis of the knee. The condition most commonly affects the medial femoral condyle; although it can also affect the patella, tibial plateau, proximal tibia, and lateral femoral condyle.