A new method for measurement of the size of subacromial spurs of the shoulder by cassette tilt view

C้hernchujit, Bancha; Kanokvaleewong, Chanont; Parate, Prashant; Boontanapibul, Krit; Arirachakaran, Alisara; Kongtharvonskul, Jatupon

doi:10.1007/s00590-018-2328-2

Cited by 2 publications

(1 citation statement)

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“…One of the reasons for this uncertainty is that adequate and reproducible radiographs are difficult to obtain, and accurate 3-dimensional data, such as measurements obtained by CT or directly, are more convincing. For example, the cassette tilt view was proposed for evaluating the size of a subacromial spur, but the result might be affected by the projection angle [ 22 ]. To determine the effect of spurs on SIS and conduct targeted subacromial decompression, a preoperative understanding of subacromial spurs or the true shape of the subacromial surface based on CT data is essential.…”

Section: Introductionmentioning

confidence: 99%

Distribution and analysis of subacromial spurs and the relationship with acromial classification and angle in healthy individuals

Dong,

Du,

Shi

et al. 2024

PLoS ONE

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Background Subacromial spurs are considered the one of the pathology underlying shoulder impingement syndrome. Furthermore, few studies have focused on the morphology of the subacromial spurs in normal Chinese people. This study aimed to study the spur distribution and to illustrate the morphology of spurs, which may help guide the extent of acromioplasty. Methods A total of 93 normal individuals were enrolled, and both shoulders of all enrolled individuals were analyzed. The subjects were divided and classified into three different groups by ages: group I = 18–40 years, group II = 41–60 years, and group III ≥ 61 years. The osteophyte distribution, osteophyte area, subacromial surface area and osteophyte area/subacromial surface area ratio were measured and illustrated using Mimics and 3-matic software. The shape of the acromion was classified according to the Bigliani and Morrison classification system. The acromial angle was also classified. Then, the relationship between osteophytes, acromial classification and acromial angle was analyzed. Results Type II (curved shape) was the most common type of acromion, and the hooked shape was a rare form. A significant increase in the left subacromial surface area in males was observed in group III compared with group I (P < 0.001) and group II (P = 0.004). The total spur/subacromial area ratio was significantly higher in group II than I. An obvious increase in the right subacromial area was observed in group III compared with group I (P = 0.004). Furthermore, there was a significant increase in the right spur area (P = 0.021) and total spur/subacromial area ratio (P = 0.006) in females in group II compared with group I. Fewer spurs were observed on the left than on the right side (p = 0.0482). One spur was most common among type II acromions (29/36) (80.56%) on the left side and the right side (34/52, 65.38%). Conclusions Spurs osteophytes are mainly distributed with an irregular shape and mostly run through the medial and lateral sides of the subacromial surface in normal subjects. The characteristics of subacromial spurs are so diverse that a surgeon must conduct subacromial decompression completely based on the morphology of individual spurs.

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Section: Introductionmentioning

confidence: 99%