Osteonecrosis of the patella in patients with nontraumatic osteonecrosis of the femoral head: MRI findings in 60 patients

Sakai, Takashi; Sugano, Nobuhiko; Nishii, Takashi; Haraguchi, Koichi; Yoshikawa, Hiroyuki; Ohzono, Kenji

doi:10.1080/000164700317381108

Cited by 6 publications

(7 citation statements)

References 12 publications

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“…Franceschi et al reported the first case of simultaneous location of osteochondroses of the two ossification centers of both patellae in 9-year-old boy [ 2 ]. Sakai et al found osteonecrosis of the patella in nine patients (ten knees) while evaluating non-traumatic osteonecrosis of the femoral head in 60 patients [ 4 ]. Pinar et al have been reported three similar cases and concluded that the process either physiological or pathological has a benign course and favorable prognosis [ 17 ].…”

Section: Discussionmentioning

confidence: 99%

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Osteochondrosis of Primary Center of Patella: A Case Report

Kumar¹,

Ahmed²,

Shyam³

et al. 2021

JOCR

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Introduction: Osteochondrosis of the primary ossification center of the patella (Kohler’s Disease) is a rare and self-limiting condition of unknown etiology. Sometimes it may be found as normal variant. Case Report: A 7-year-old boy presented with anterior right knee pain. On radiological examination, there was increased density, irregularity, and fragmentation of the patellar primary ossification center. Activity modification and exercise led to marked symptomatic improvement after 1 year. Conclusion: It was concluded that the disease either physiological or pathological, diagnosis is usually difficult. However, the treatment is simple. There was improvement functionally as well as radiologically with activity modification. Keywords: Osteochondrosis, primary center, patella.

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Section: Discussionmentioning

confidence: 99%

“…Kohler’s disease of patella a group of self-limited conditions due to unknown etiology in which endochondral ossification is disturbed. Very few cases have been reported in literature [ 2 , 3 , 4 ]. Pain in the patellar region of a growing child is a common occurrence.…”

Section: Introductionmentioning

confidence: 99%

Osteochondrosis of Primary Center of Patella: A Case Report

Kumar¹,

Ahmed²,

Shyam³

et al. 2021

JOCR

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“…Patellar osteonecrosis has been described as an unusual cause of patellofemoral pain syndrome. 2,[9][10][11][12]14,18,[21][22][23]27 It usually is related to corticosteroids, 14,18,21,27 patellar fracture, 23 total knee replacement, 2,9 and, in rare cases, is idiopathic. [10][11][12]22 Conventional radiographs, bone scan, and MRI have been reported as the methods of choice to diagnose this condition.…”

Section: Discussionmentioning

confidence: 99%

“…On MRI, these lesions appear as regions of diffuse hypointensity or areas of normal fat intensity surrounded by a hypointensity band on T1weighted images with spin echo sequences. 21 The superolateral pole is the most common location of these osteonecrotic changes. 24 Magnetic resonance imaging also is used to investigate defects in articular cartilage.…”

Section: Discussionmentioning

confidence: 99%

“…The origin of this pain in the majority of patients may be overuse and overload of the patellofemoral joint as a result of malalignment of the lower extremity, patellar instability, or direct trauma. Chondromalacia and osteoarthritis is the natural end result when the primary disorder is not addressed; however, unusual conditions such as osteonecrosis, 2,[9][10][11][12]14,18,[21][22][23]27 neuromas, 1,19 and tumors 6,13,15,17,26 may also cause patellofemoral pain. Thus, efforts have to be made to identify classic predisposing factors for anterior knee pain as well as to rule out rare conditions of the patellofemoral joint that could be responsible for the symptoms.…”

Section: Introductionmentioning

confidence: 99%

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Osteoarthritic Cyst Mimicking Patellar Osteonecrosis

Halanski

Torga-Spak²,

Teitge³

2010

J Knee Surg

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A review of bone marrow lesions in the arthritic knee and description of a technique for treatment

Gobbi

Dallo

Frank

et al. 2021

Journal of Cartilage & Joint Preservation

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Introduction: Subchondral bone pathology includes a wide range of pathologies, such as osteoarthritis, spontaneous insufficiency fractures, osteonecrosis, transient bone marrow lesions syndromes, and trauma. They show typical magnetic resonance imaging (MRI) findings termed bone marrow lesions (BMLs). However, the etiology and evolution of BMLs in multiple conditions remains unclear. There is still no gold standard treatment protocol in treating BMLs in the knee, and a variety of treatment modalities have been tested in the hope that they might reduce pain and stop disease progression. Objectives: To review the treatment options for BMLs of the knee. Methods: A literature review was performed that included searches of PubMed, Cochrane, and Medline databases using the following keywords: Bone marrow lesions, sub chondroplasty, bone marrow concentrate, platelet-rich plasma (PRP), subchondral bone augmentation. Results: The use of novel biologic techniques to treat BMLs in the knee, such as PRP and Bone Marrow Cells, has yielded promising clinical outcomes. Conclusions: Future research of BMLs will be mandatory to address the different pathologies better and determining appropriate treatment strategies. There is still a need for high-quality RCTs studies and systematic reviews in the future to enhance further treatment strategy in preventing or treating BMLs of the knee.

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Osteonecrosis of the patella in patients with nontraumatic osteonecrosis of the femoral head: MRI findings in 60 patients

Cited by 6 publications

References 12 publications

Osteochondrosis of Primary Center of Patella: A Case Report

Osteochondrosis of Primary Center of Patella: A Case Report

Osteoarthritic Cyst Mimicking Patellar Osteonecrosis

A review of bone marrow lesions in the arthritic knee and description of a technique for treatment

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