Abstract：
AIM:To evaluate the use of ultrasonography (US) in the diagnosis of gluteal muscle contracture (GMC) by analysis of its imaging characteristics. MATERIALS AND METHODS:Thirty-nine patients suspected of having GMC due to abnormal gait underwent pre-operative US. RESULTS:The diagnosis of GMC was confirmed by surgery in 27 patients. Six patients were diagnosed with congenital hip dysplasia, and the remaining six patients were diagnosed with sciatic nerve damage, post-poliomyelitis sequelae, and myasthenia gravis. For the patients with GMC, US showed muscle thinning and hyperechoic strips (specific for muscular contracture) in the muscles involved. In three patients with GMC, the strips were integrated into muscle bundles, demonstrating both strong and weak sonographic echoes. The sensitivity and specificity of the diagnosis of GMC using the presence of strips were 88.9% and 83.3%, respectively, and using muscle thinning, the sensitivity and specificity were 92.6% and 50%, respectively. The contracture strips, as measured by US, were significantly smaller than the actual measurements at the time of surgery, but there was a significant correlation between the two measurements (r = 0.814, P < 0.01). The highest detection rate of GMC by US was found in the gluteus maximus muscle (91.8%), and the lowest rate was found in the piriformis muscle (52.9%). CONCLUSION:Ultrasonography is a valuable tool for the diagnosis of GMC, especially for the detection of specific contracture strips in involved muscles. Its role in the pre-operative diagnosis of GMC also provides surgical planning that can guide subsequent treatment.
journal_name
Skeletal Radioljournal_title
Skeletal radiologyauthors
Li Q,Lingyan Z,Yan L,Yulan Pdoi
10.1007/s00256-009-0869-5subject
Has Abstractpub_date
2011-02-01 00:00:00pages
215-21issue
2eissn
0364-2348issn
1432-2161journal_volume
40pub_type
杂志文章abstract：OBJECTIVE:A prospective study was conducted to determine the accuracy of routine magnetic resonance (MR) imaging in correctly identifying subchondral fracture in avascular necrosis of the femoral head without apparent focal collapse on standard radiographs. MATERIALS AND METHODS:Spiral computed tomography (CT) with co...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-009-0659-0
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journal_title：Skeletal radiology
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journal_title：Skeletal radiology
pub_type： 临床试验,杂志文章
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journal_title：Skeletal radiology
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journal_title：Skeletal radiology
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pub_type： 临床试验,杂志文章
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journal_title：Skeletal radiology
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journal_title：Skeletal radiology
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