Size of Osteonecrosis of the Knee

Al-Rowaih, Ahmad; Björkengren, Ann; Egund, N; Lindstrand, Anders; Wingstrand, Hans; Thorngren, Karl–Göran

doi:10.1097/00003086-199302000-00010

Cited by 30 publications

(22 citation statements)

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“…In our series, there was a previous history of trauma in 2 of the 21 patients. There is a positive correlation between the size of the lesion and the development of secondary osteoarthrosis [3], which is more frequent when the necrotic area is greater than 3.7 cm2 or 40% of the femoral condyle [12]. In 8 of the 15 surgically treated patients, we confirmed a meniscal lesion.…”

Section: Discussionmentioning

confidence: 59%

Spontaneous osteonecrosis of the knee

Nin

Leyes

Schweitzer

1998

Knee Surgery, Sports Traumatology, Arthroscopy

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We performed a retrospective study on 21 patients affected by unilateral spontaneous osteonecrosis of the femoral condyle. Fifteen were women and 6 men. Their average age was 66.9 years. In ten cases the onset of pain was sudden, with a clear previous history of trauma in two of them. Gait pain, effusion, and joint locking were the most frequent clinical symptoms. At the time of diagnosis, 7 patients presented with grade I necrosis, 8 grade II, 1 grade III, and 5 grade IV, following Koshino's classification [11]. The average percentage of osteonecrosis was 36.8%. Six patients underwent conservative treatment with physical exercises and nonsteroidal anti-inflammatory drugs. We performed arthroscopy alone in 4 patients, arthroscopy and drilling in 8, valgus high tibial osteotomy in 2, and total knee arthroplasty in 1. The overall results after an average follow-up 41 months were excellent and good in 76.2% of the cases, fair in 14.3%, and poor in 9.5%. An associated medial meniscus tear was found in half of the patients who underwent surgery. In patients diagnosed with grade III and IV osteonecrosis, no increase in the percentage of necrosis was observed.

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Section: Discussionmentioning

confidence: 59%

Spontaneous osteonecrosis of the knee

Nin

Leyes

Schweitzer

1998

Knee Surgery, Sports Traumatology, Arthroscopy

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“…The size can be measured by either the ratio [16] or the area [17] technique. Studies have shown that there is no difference between the two methods in predicting prognosis [18,19]. We used the ratio method and classified a lesion as being large if it involved more than 0.32 of the involved condyle width.…”

Section: Radiographic Resultsmentioning

confidence: 99%

Treatment of Secondary Osteonecrosis of the Knee With Local Debridement and Osteoprogenitor Cell Grafting

Goodman

Hwang

2015

The Journal of Arthroplasty

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“…For larger lesions with persisting symptoms, progressive collapse of the femoral condyle surface, and subsequent varus deformity, surgical treatment is indicated [9,41,43,44]. The different options are tibial valgisation osteotomy to relieve load on the medial compartment and unicompartimental or most often total knee arthroplasty [64,65].…”

Section: Treatmentmentioning

confidence: 99%