Para-articular Osteochondroma of the Infrapatellar Fat Pad

Goto, Takahiro; Nemoto, Tetsuo; Imanishi, Jungo

doi:10.1055/s-0031-1275394

Cited by 7 publications

(5 citation statements)

References 15 publications

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“…The cause remains unknown [2] . Several reports have associated it with minor injuries [7][8][9] . Evaniew et al [10] reported that only 16% of cases involved antecedent trauma.…”

Section: Discussionmentioning

confidence: 99%

Giant para-articular osteochondroma of knee joint: A case report

Kouassi,

Akobé,

Yao

et al. 2023

Int. J. Case Rep. Orthop.

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We report one case of giant para-articular osteochondroma of knee in female who was 21 years old. X ray, CT scan examination with three-dimensional reconstruction and early biopsy in timely diagnosis. The mass was completely resected. However, there was tumour recurrence. After second's surgical intervention, the postoperative course was uneventful after two years follow-up. Pain disappeared, however there had a decreased range of motion of knee.

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“…The cause remains unknown [2] . Several reports have associated it with minor injuries [7][8][9] . Evaniew et al [10] reported that only 16% of cases involved antecedent trauma.…”

Section: Discussionmentioning

confidence: 99%

Giant para-articular osteochondroma of knee joint: A case report

Kouassi,

Akobé,

Yao

et al. 2023

Int. J. Case Rep. Orthop.

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“…1 Most patients develop osteochondromas in their fifties, and the incidence in male patients is 2-3 times higher than that in females. 3,4 The main clinical manifestations of the disease are joint pain, swelling, joint effusion, tenderness, and dyskinesia. Since only high-density tumors with complete calcification can be displayed via X-ray examination, CT or MRI examination is often needed.…”

Section: Discussionmentioning

confidence: 99%

Arthroscopic Treatment of Atypical Synovial Osteochondromatosis of Infrapatellar Fat Pad: A 4-Year Follow-up Case Report and Literature Review

Bai¹,

Zhou²,

Zhang³

et al. 2021

Explor Res Hypothesis Med

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Primary synovial osteochondromatosis, also known as synovial chondromatosis, is a rare benign arthropathy caused by synovial cartilage metaplasia. The tumor is rarely seen outside the knee joint cavity, especially in the infrapatellar fat pad (IFP). This case presents an older woman who complained of left knee joint pain with a growing isolated mass for 2 years. Physical examination showed that a hard mass was palpable below the patella. X-ray and computed tomography examination of knee joint revealed cluster calcification foci under the patella. Under arthroscopy, the mass was found in the IFP and removed, with pathological examination indicating synovial osteochondromatosis. The patient recovered well after the operation, and no sign of recurrence was seen at a 4-year follow-up. This case report proposes that synovial osteochondromatosis in atypical sites, such as IFP, should heighten our attention and could be treated by arthroscopy.

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“…The possibility of existence of occult injury history of the Hoffa's fat pad was also considered in the present case. The differential diagnosis of SO in this location includes para-articular osteochondroma, Hoffa's disease, and primary chondrosarcoma (12). Extra-articular synovial osteochondroma should be differentiated from para-articular osteochondroma of the infrapatellar fat pad (13).…”

Section: Discussionmentioning

confidence: 99%

Extra‑articular synovial osteochondroma of the Hoffa's fat pad involving the patellar tendon: A case report and literature review

et al. 2020

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Synovial osteochondroma (SO) is a relatively uncommon tumor affecting the synovial joints that is characterized by the development of hyaline cartilage from the synovial membrane. The basic pathophysiology of SO is thought to be the metaplastic change of the synovium to hyaline cartilage. Large extra-or para-articular lesions in the Hoffa's fat pad are relatively uncommon. A 56-year-old woman complained of knee pain associated with a large lesion on the anterior of the right knee. She also had restricted range of motion in the knee. Examination revealed an elastic hard 8x9-cm lesion involving the patellar tendon. Computed tomography and magnetic resonance imaging demonstrated a mosaic-intensity mass lesion in the inferior side of the Hoffa's fat pad as well as the patellar tendon. The patient underwent needle biopsy. Histological analysis revealed a solitary SO. There were no atypical features suggestive of malignancy and the mass was resected marginally. The patient had no recurrence or knee functional disorder 3 years postoperatively. There are no reports of SO involving the patellar tendon with restriction of range of motion. Removal of the mass lesion for management for SO, as in the present case, is unusual. To the best of our knowledge, this is the first case of extra-articular SO in the Hoffa's fat pad involving the patellar tendon causing a restriction of range of motion of the knee. Marginal surgical resection improved knee function.

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Para-articular Osteochondroma of the Infrapatellar Fat Pad

Cited by 7 publications

References 15 publications

Giant para-articular osteochondroma of knee joint: A case report

Giant para-articular osteochondroma of knee joint: A case report

Arthroscopic Treatment of Atypical Synovial Osteochondromatosis of Infrapatellar Fat Pad: A 4-Year Follow-up Case Report and Literature Review

Extra‑articular synovial osteochondroma of the Hoffa's fat pad involving the patellar tendon: A case report and literature review

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