Dec 10, 2024 · Subchondral insufficiency fracture of the knee (SIF/SIFK) are stress fractures in the femoral condyles or tibial plateau that occur in the absence of acute trauma, typically affecting older adults.

Oct 2, 2023 · Subchondral insufficiency fractures (SIFs) and SIFs with osteonecrosis (SIF-ONs) of the knee (previously misnamed spontaneous osteonecrosis of the knee (SONK)) are bone lesions that appear without prior traumatic, tumoral, or inflammatory event.

Spontaneous osteonecrosis of the knee (SONK), also called subchondral insufficiency fractures of the knee (SIFK), was first described by Ahlback in 1968 and is a diagnosis that is sometimes overlooked and attributed to knee osteoarthritis [1].

Subchondral insufficiency fractures of the knee (SIFK) are characterized by acute or subacute onset of severe knee pain in older persons, usually without a history of trauma. Patients often have localized tenderness over the affected condyle and worse pain with weight bearing and …

Oct 2, 2023 · Subchondral insufficiency fractures (SIFs) and SIFs with osteonecrosis (SIF-ONs) of the knee (previously misnamed spontaneous osteonecrosis of the knee (SONK)) are bone lesions that appear without prior traumatic, tumoral, or inflammatory event.Both conditions are characterized in the early stages b …

Based on these findings, SONK is recently being called as a subchondral insufficiency fracture of the knee (SIFK). In this study, we examined the prevalence of SIFK and the factors related to SIFK using data from a cohort data of elderly populations with knee MRI images.

Subchondral insufficiency fractures are a relatively common cause of knee pain, particularly in older patients. Although the entity is most frequently encountered at the weightbearing surface of the medial femoral condyle, the lateral femoral condyle or the tibia may also be involved (3a,4a).

Subchondral insufficiency fractures (SIFs) and SIFs with osteonecrosis (SIF-ONs) of the knee (previously misnamed spontaneous osteonecrosis of the knee (SONK)) are bone lesions that appear without prior traumatic, tumoral, or inflammatory event.

Nov 29, 2021 · Subchondral insufficiency fracture of the knee (SIFK) is a common cause of knee joint pain in older adults. SIFK is a type of stress fracture that occurs when repetitive and excessive...

Jul 14, 2024 · SONK is now considered a misnomer, representing a SIF of the knee that has progressed to subchondral collapse and secondary osteonecrosis. Some authors suggest the term SONK for lesions that will not heal, proposing "irreversible SIF" or "pseudoarthrosis" as more appropriate terms.