Measurement of the humeral head retroversion angle

Öztuna, Volkan; Öztürk, Hakan; Eskandari, Metin Manouchehr; Kuyurtar, Fehmi

doi:10.1007/s00402-002-0398-3

Cited by 17 publications

(19 citation statements)

References 11 publications

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“…As well, some authors have found a considerable difference between contralateral measurements [7,16], whereas others have found no difference [13,23,43]. Finally, some authors have found the bicipital groove is a useful anatomic landmark for guiding anatomic recreation of retroversion [8,15,22,24,25,27,33].…”

Section: Introductionmentioning

confidence: 92%

“…This is owing to several factors, including the definition of humeral head retroversion, varying methods of measurement, ranges of normal values, contralateral variations, and the accuracy of anatomic landmarks to guide determination of anatomic retroversion. Humeral head retroversion is generally defined with respect to the plane of the humeral head articular surface proximally, but distally, the reference axis has been debatable, including the transepicondylar axis [2,7,11,23,28,33,34,46,47,[48][49][50][51], trochlear tangent axis [16,24,31,32,43,45,52], or the forearm axis [9,10,23,[40][41][42]. Methods of measurement have included direct anatomic [6,28,33,37], radiographic [11,12,31,32,46,[50][51][52], ultrasound [26], computed tomography scan [7,23,34,47], MRI [15], and computer-assisted methods [13,…”

Section: Introductionmentioning

confidence: 99%

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CT Scan Method Accurately Assesses Humeral Head Retroversion

Boileau

Bicknell

Mazzoleni

et al. 2008

Clinical Orthopaedics &Amp; Related Research

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Humeral head retroversion is not well described with the literature controversial regarding accuracy of measurement methods and ranges of normal values. We therefore determined normal humeral head retroversion and assessed the measurement methods. We measured retroversion in 65 cadaveric humeri, including 52 paired specimens, using four methods: radiographic, computed tomography (CT) scan, computer-assisted, and direct methods. We also assessed the distance between the humeral head central axis and the bicipital groove. CT scan methods accurately measure humeral head retroversion, while radiographic methods do not. The retroversion with respect to the transepicondylar axis was 17.9 degrees and 21.5 degrees with respect to the trochlear tangent axis. The difference between the right and left humeri was 8.9 degrees. The distance between the central axis of the humeral head and the bicipital groove was 7.0 mm and was consistent between right and left humeri. Humeral head retroversion may be most accurately obtained using the patient's own anatomic landmarks or, if not, identifiable retroversion as measured by those landmarks on contralateral side or the bicipital groove.

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Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

CT Scan Method Accurately Assesses Humeral Head Retroversion

Boileau

Bicknell

Mazzoleni

et al. 2008

Clinical Orthopaedics &Amp; Related Research

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“…Average HTA was measured as 24° (5°-47°) for the bone samples and 26° (7°-47°) for healthy volunteers. The authors stated that a comparison between the measurements would yield a difference of 0.9° to 3° (14).…”

Section: Discussionmentioning

confidence: 99%

Determining torsion angle of humerus head using MRI method

Tellioğlu¹,

Karakaş²,

Taşkın³

2014

Turk J Med Sci

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Plant tissue culture is an efficient technique for conserving endemic plant species. A reproducible in vitro regeneration protocol was developed for the endemic Iris sari and Iris schachtii in the present study. The highest number of shoots per explant was obtained on Murashige and Skoog (MS) medium supplemented with 0.5 mg/L thidiazuron (TDZ) plus 0.5 mg/L α-naphthaleneacetic acid (NAA) and 1 mg/L TDZ plus 0.5 mg/L NAA, whereby 96.88% and 100% shoot induction with 9.55 and 11.34 shoots per explant of Iris sari and Iris schachtii were recorded, respectively. Regenerated shoots were successfully rooted on MS medium with either 1 mg/L indole-3-butyric acid (IBA) or 1 mg/L IBA plus 0.2 mg/L NAA. Rooted shoots were transferred to pots containing either a peat-soilsand (1:1:1) mixture or a hydroponic culture containing Hoagland solution to acclimatize the regenerated plants to the greenhouse chamber. Approximately 90% of plants were transferred ex vitro successfully.

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“…Humeral head retroversion is generally defined with respect to the plane of the humeral head articular surface proximally; distally, however, the reference axis has been debated, including the transepicondylar axis [3,4,8], trochlear tangent axis [7,9,14,19] and forearm axis [8,18]. Methods of measurement have included direct anatomic [13,15], radiographic [4,14], ultrasound [10], computed tomography scan [3,8], MRI [6], and computer-assisted methods [5,19,21,22]. Boileau et al [2] showed that the radiographic method overestimated the humeral head retroversion relative to the computer-assisted method.…”

Section: Discussionmentioning

confidence: 99%

“…Rockwood et al [23] found a mean ITS orientation of 45°. Many authors studied the anatomy of the intertubercular sulcus [19,21,24], and some tried to define the relation with the humeral head retroversion [3,6,12]. Doyle and Burks [6] measured the distance from the biceps groove to a line perpendicular to the midpoint of the humeral articular surface.…”

Section: Discussionmentioning

confidence: 99%

Correlation between the retroversion of the humeral head and the orientation of the intertubercular sulcus: a CT scan anatomical study

et al. 2014

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Purpose The purpose was to study the anatomy of the humeral head, more specifically the retroversion of the humeral head and the orientation of the intertubercular sulcus, using CT scan, and to make correlations between those two entities of the proximal humerus. Methods Sixty dry adult humeri from an osteological collection underwent CT scan from the proximal to the distal extremity. The measurements obtained by CT-reformation were recorded by two independent radiologists. We determined the humeral head axis, the transepicondylar axis, the retroversion of the humeral head, and the orientation of the intertubercular sulcus (ITS). Statistical analysis using SPSS determined the Pearson correlation coefficient.Results The CT scan measurements were similar to those in the literature, and thus allowed us to validate CT scan assessment. Statistical analysis showed a significant reverse correlation [the coefficient of correlation was -0.37 (p = 0.004)] between the retroversion of the humeral head and the orientation of the intertubercular sulcus: the more the retroversion of the humeral head increases, the more the angle of the orientation of the ITS decreases. Conclusions To the best of our knowledge, this reverse correlation between the retroversion of the humeral head and the orientation of the intertubercular sulcus has never been described. This new anatomical data might be helpful for orthopedic surgery.

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Measurement of the humeral head retroversion angle

Cited by 17 publications

References 11 publications

CT Scan Method Accurately Assesses Humeral Head Retroversion

CT Scan Method Accurately Assesses Humeral Head Retroversion

Determining torsion angle of humerus head using MRI method

Correlation between the retroversion of the humeral head and the orientation of the intertubercular sulcus: a CT scan anatomical study

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