Hip Pain in a 24-year-old Woman

Chondroblastoma of Bone in the Extremities

“…Our findings indicate that pain is the most common symptom, as is the case in most bone tumors. The interval between the onset of symptoms and diagnosis was as long as three years (mean, 8.7 months), as longterm symptoms may be misdiagnosed as growth pain, sports injury, or some other non-tumor-related disease during this interval [33][34][35][36] .…”

Eight-Year Follow-Up Using a Fresh Osteochondral Allograft for a Femoral Head Chondroblastoma in a 17-Year-Old Patient

“…It seemed like the most reasonable choice to achieve our goals of treatment, which were performing an adequate intralesional resection, as well as preserving joint surface and maximizing hip function in a 17-year-old patient. The restoration of the articular joint line following oncologic resection is of concern with large femoral head lesions due to the associated risks of head collapse and early osteoarthritis, especially in young patients [9, 14–16]. Fresh osteochondral allografts have been previously used successfully to fill articular surface deficits in the knees, ankles, shoulders, and hip joints [9, 14–16].…”

“…The restoration of the articular joint line following oncologic resection is of concern with large femoral head lesions due to the associated risks of head collapse and early osteoarthritis, especially in young patients [9, 14–16]. Fresh osteochondral allografts have been previously used successfully to fill articular surface deficits in the knees, ankles, shoulders, and hip joints [9, 14–16]. Hyaline cartilage from fresh grafts is avascular and aneural and receives its nutrition from synovial fluid, thus making it a good tissue to transplant [17].…”

Osteonecrosis of the Femoral Head with Collapsed Medial Lesion

“…The proximal femur is reported to be a common site of developing the tumor. Since a lytic lesion surrounded by sclerotic border is considered to be diagnostic features, some cases may be confused with ONFH 4. Osteoid osteoma usually occurs near the metaphysis rather than the epiphysis, and appears as a radiolucent nidus showing high signal intensity on T2 images, accompanied by bone marrow edema 5.…”

“…Since a lytic lesion surrounded by sclerotic border is considered to be diagnostic features, some cases may be confused with ONFH. 4 Osteoid osteoma usually occurs near the metaphysis rather than the epiphysis, and appears as a radiolucent nidus showing high signal intensity on T2 images, accompanied by bone marrow edema. 5 Although the imaging findings of our cases seemed to be less similar to those of the tumors, we were unable to make a diagnosis of ONFH due to the atypical imaging findings.…”