Abstract：
OBJECTIVE:The description of femoral head sphericity and related risk for femoroacetabularimpingement is currently limited to an angular estimate-the alpha angle-whose relevance and accuracy have been challenged. We developed a three-dimensional approach for both automated digital measurement of the alpha angle and the detection of camdeformities. Accuracy and diagnostic relevance of the alpha angle estimated by means of the oblique axial and multiple radial plane protocol were compared with the computed results. MATERIALS AND METHODS:Using subject-specific statistical information of the femur head and mid-neck region, a method was developed to accurately compute the maximum alpha angle and to define aspherical eccentric areas at the femoral head-neck junction. The method was evaluated on 102 dry cadaver femur specimens. RESULTS:Average detection limit for bony prominences at the head-neck transition was 0.98 mm. Pixel size of the investigated CT data was 0.79 mm. Mean maximum computed alpha angle of the femurs with cam-type morphology as identified by the morphological method was 67.72° (range 53.04-88.02°). Mean maximum computed alpha angle of the femurs without cam deformity was 47.65° (range 38.67-59.81°). Alpha angle estimates obtained by means of the multiple radial plane protocol correlated better (R = 0.88) and showed higher diagnostic agreement (phi = 0.77) with the 3D computational analysis compared to the oblique axial protocol (R = 0.60; phi = 0.67). CONCLUSIONS:The alpha angle seems to be a relevant screening tool when obtained by 3D computed analysis or when estimated according to the multiple radial plane protocol. Estimates obtained by means of the oblique axial protocol have insufficient diagnostic and measurement accuracy.
journal_name
Skeletal Radioljournal_title
Skeletal radiologyauthors
Audenaert EA,Baelde N,Huysse W,Vigneron L,Pattyn Cdoi
10.1007/s00256-010-1021-2subject
Has Abstractpub_date
2011-07-01 00:00:00pages
921-7issue
7eissn
0364-2348issn
1432-2161journal_volume
40pub_type
杂志文章abstract：:We describe two cases of pigmented villonodular synovitis affecting true bursae. This study was also designed to discuss the term "pigmented villonodular bursitis", not confined to true synovial bursae, sometimes creating misunderstanding. ...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-002-0491-2
更新日期：2002-06-01 00:00:00
abstract：OBJECTIVE:The objective was to determine whether arm and radiographic beam positional changes affect the acromiohumeral interval (AHI) in radiographs of healthy shoulders. MATERIALS AND METHODS:Controlling for participant's height and position as well as radiographic beam height and angle, from 30 right shoulders of r...
journal_title：Skeletal radiology
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00256-008-0467-y
更新日期：2008-06-01 00:00:00
abstract：OBJECTIVE:To provide an update on imaging of metabolic bone disease based on new developments, findings, and changing practices over the past 30 years. MATERIALS AND METHODS:Literature review of osteoporosis, osteomalacia, renal osteodystrophy, Paget's disease, bisphosphonates, with an emphasis on imaging. RESULTS:Ci...
journal_title：Skeletal radiology
pub_type： 杂志文章,评审
doi：10.1007/s00256-009-0666-1
更新日期：2009-09-01 00:00:00
abstract：OBJECTIVE:The purpose was to evaluate, in a cadaveric cohort, the feasibility and the learning curve of ultrasound-guided percutaneous carpal tunnel release. MATERIALS AND METHODS:Fourteen carpal tunnel releases were carried out on unembalmed cadavers by a senior and a junior radiologist. Procedures were realized with...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-019-03207-y
更新日期：2019-11-01 00:00:00
abstract：OBJECTIVE:Postdiscography infection is an uncommon complication. Magnetic resonance (MR) imaging is often the modality of choice for evaluating spinal infection. Discography entails disc access and fluid injection that could alter the baseline MR imaging appearance of the spine and be confounded for infection. Our purp...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-006-0221-2
更新日期：2007-04-01 00:00:00
abstract：:The deltoid is a fascinating muscle with a significant role in shoulder function. It is comprised of three distinct portions (anterior or clavicular, middle or acromial, and posterior or spinal) and acts mainly as an abductor of the shoulder and stabilizer of the humeral head. Deltoid tears are not infrequently associ...
journal_title：Skeletal radiology
pub_type： 杂志文章,评审
doi：10.1007/s00256-013-1667-7
更新日期：2013-10-01 00:00:00
abstract：:Over the past four decades, articular cartilage imaging has developed rapidly. Imaging now plays a critical role not only in clinical practice and therapeutic decisions but also in the basic research probing our understanding of cartilage physiology and biomechanics. ...
journal_title：Skeletal radiology
pub_type： 杂志文章,评审
doi：10.1007/s00256-011-1226-z
更新日期：2011-09-01 00:00:00
abstract：OBJECTIVE:To evaluate and compare two groups of patients with sciatica due to intervertebral disc herniation with no neurologic deficit. The groups consisted of patients with intervertebral disc herniation in a medial location (group 1) and those in a lateral location (group 2). MATERIALS AND METHODS:A total of 200 pa...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-012-1422-5
更新日期：2013-01-01 00:00:00
abstract：OBJECTIVE:To determine the association of meniscal flounce with the pattern and location of the meniscal tear, concomitant ligamentous injury, amount of knee joint effusion, and flexion and rotation angles. MATERIALS AND METHODS:A total of 283 knees of 280 patients were retrospectively reviewed over a 9-month period. ...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-020-03416-w
更新日期：2020-08-01 00:00:00
abstract：:Osteoma of long bone is an extremely rare, benign bone-forming surface lesion with the largest published case series consisting of only 14 patients. The most important and often most difficult lesion to differentiate from osteoma of long bone radiographically is parosteal osteosarcoma, which is a rare, low-grade surfa...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-014-2046-8
更新日期：2015-05-01 00:00:00
abstract：:Well differentiated (low grade) osteosarcomas are often unrecognized and inadequately treated. We report on a patient with a well differentiated osteosarcoma of the tibia that radiographically presented with two strikingly dissimilar appearing juxtaposed lesions. Proximally, the lesion was sclerotic, and distally, ost...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-002-0534-8
更新日期：2002-08-01 00:00:00
abstract：:Radial wrist pain is a common clinical complaint. The relatively complex anatomy in this region, combined with the small size of the anatomical structures and occasionally subtle imaging findings, can pose problems when trying to localize the exact cause of pain. To fully comprehend the underlying pathology, one needs...
journal_title：Skeletal radiology
pub_type： 杂志文章,评审
doi：10.1007/s00256-014-1840-7
更新日期：2014-06-01 00:00:00
abstract：:There is still a paucity of information about the clinical presentation, treatment and imaging findings of latissimus muscle tears. Only one study has specifically described the magnetic resonance imaging (MRI) features of latissimus tendon tears. We describe a case of a high-grade tear in the latissimus muscle tendon...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-009-0717-7
更新日期：2009-11-01 00:00:00
abstract：OBJECTIVE:To describe the frequency of inflammatory-like findings on MR imaging in asymptomatic volunteers and compare them with patients with known rheumatoid arthritis and psoriatic arthritis. MATERIALS AND METHODS:MR images of fingers in 42 asymptomatic volunteers and 33 patients with rheumatoid/psoriatic arthritis...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-017-2808-1
更新日期：2018-02-01 00:00:00
abstract：:During recent years the combination of surgery, radiotherapy, and multiple chemotherapy in the treatment of patients with cancer has resulted in increased survival periods and, in some cases, complete cures. In children, however, the subsequent development of other and apparently unrelated malignancies has been observ...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/BF00348796
更新日期：1984-01-01 00:00:00
abstract：OBJECTIVES:To quantitatively evaluate and compare nerve density in patients with limited cutaneous systemic sclerosis (lcSSc) and control subjects using high-resolution ultrasound (US) with a computer-aided assessment. METHODS:Forty patients and 40 age- and sex-matched control subjects were prospectively enrolled. Ult...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-015-2230-5
更新日期：2015-12-01 00:00:00
abstract：OBJECTIVE:The objective was to retrospectively record the CT and MRI features and healing patterns of acute, incomplete stress fractures of the pars interarticularis. METHOD:The CT scans of 156 adolescents referred with suspected pars interarticularis stress fractures were reviewed. Patients with incomplete (grade 2) ...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-008-0449-0
更新日期：2008-05-01 00:00:00
abstract：PURPOSE:To determine (i) whether intra-articular gadolinium from MR arthrography (MRA) results in gadolinium deposition in the brain and (ii) whether there is a correlation between intra-articular gadolinium dose and intracranial gadolinium deposition. MATERIALS AND METHODS:This retrospective study was institutional r...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-020-03380-5
更新日期：2020-07-01 00:00:00
abstract：:Thirty-three ultrasound examinations of the corticotomy interval of patients undergoing Ilizarov procedures were retrospectively evaluated for the presence or absence of an acoustic edge artifact. This artifact, consisting of a fine anechoic band, has been previously described in phantom models and is presumed to be d...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/BF00241766
更新日期：1992-01-01 00:00:00
abstract：OBJECTIVE:Myxofibrosarcoma (MFS) is characterized by a high frequency of local recurrence after surgery because of infiltrative growth of the tumor cells. This infiltrative growth creates a characteristic 'tail-like' pattern on magnetic resonance imaging (MRI), and it has been reported that this pattern is especially o...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-014-1992-5
更新日期：2015-01-01 00:00:00
abstract：OBJECTIVE:To report 12 cases of chondrosarcoma in a rare location, the short tubular bones of the hands and feet, as well as 12 cases of enchondroma in similar locations, emphasizing the radiologic and histopathologic features. DESIGN AND PATIENTS:All relevant cases that had both histologic slides and radiographs avai...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s002560050448
更新日期：1998-11-01 00:00:00
abstract：:Two cases of a rare Anderson type III occipital condyle fracture are presented. In any patient sustaining craniovertebral injury an occipital condyle fracture may be missed because plain films can be unremarkable. It is important to include computed tomography or coronal hypocycloidal tomography for all suspect cases ...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/BF00197672
更新日期：1993-01-01 00:00:00
abstract：PURPOSE:The goal of our study was to determine the frequency of intra-articular calcifications on initial postoperative radiographs following arthroscopic ACL reconstruction, describe their appearance, hypothesize their etiology, and determine their significance. MATERIALS AND METHODS:Review of records and post-operat...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-013-1773-6
更新日期：2014-02-01 00:00:00
abstract：OBJECTIVE:Since the thickness of cartilage is an important indicator of the status, progression and response to therapy of articular disorders, assessment of it is desirable. This study was undertaken to assess the accuracy, precision, and reliability of magnetic resonance (MR) measurements of articular cartilage. MET...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/BF00941240
更新日期：1995-08-01 00:00:00
abstract：:Tuberculosis remains a major international health problem despite advances in radiological diagnosis and antituberculous therapy. Disseminated tuberculous infection affecting a single bone and manifested as multifocal lytic cortical lesions is rare and unusual. We report on a 50-year-old man with multifocal involvemen...
journal_title：Skeletal radiology
pub_type： 杂志文章,评审
doi：10.1007/s00256-003-0714-1
更新日期：2004-04-01 00:00:00
abstract：OBJECTIVE:To compare fat-suppressed fast spin-echo (FSE) T2-weighted images with gradient-recalled echo (GRE) T2*-weighted images in the evaluation of anteroinferior labral tears. DESIGN:MR images were retrospectively reviewed by two radiologists masked to the history and arthroscopic findings. They separately interpr...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s002560050238
更新日期：1997-05-01 00:00:00
abstract：:Pancreatitis, panniculitis, and polyarthritis (PPP) syndrome is extremely rare and presents as a triad of the three diseases. The patient usually presents with mild or absent abdominal symptoms. Here, we report on a case of a 66-year-old male who presented with pain and swelling in both legs and mild abdominal pain. H...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-016-2549-6
更新日期：2017-02-01 00:00:00
abstract：:A case of focal resorption in a limb salvage/bone allograft is presented, illustrating that roentgenological differentiation from other causes for graft resorption may be very difficult. The possibilities of infection and tumor recurrence, as well as "physiologic" graft resorption, must be considered in the differenti...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/BF00563211
更新日期：1994-02-01 00:00:00
abstract：:We treated a patient with large multiple chondrosarcomas derived from multiple cartilaginous exostoses. One sarcoma originated in the left pubic bone and the other sarcoma in the posterior aspect of the greater trochanter of the left femur. Thirty months after hindquarter amputation, the patient is alive without relap...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s002560050373
更新日期：1998-04-01 00:00:00
abstract：OBJECTIVE:To determine the incidence and MRI characteristics of the spectrum of posterolateral corner (PLC) injuries occurring in association with anterior cruciate ligament (ACL) rupture. MATERIALS AND METHODS:We carried out a level IV, retrospective case series study. All patients clinically diagnosed with an ACL ru...
journal_title：Skeletal radiology
pub_type： 杂志文章
doi：10.1007/s00256-017-2649-y
更新日期：2017-08-01 00:00:00
