An anatomical study of the superior transverse scapular ligament of Jining population
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The aim of this study was to determine the anatomical variations of the superior transverse scapular ligament (STSL) for better understanding the possible predisposing factors for suprascapular nerve entrapment.
The study was using fifty 10% formalin solution-fixed human cadaveric shoulders. After dissection of the suprascapular region, the length, medial width, lateral width and middle width of the suprascapular opening were measured for each STSL.
The STSL displayed six types as: (1) band-shaped in 11 cases; (2) fan-shaped in 27 cases; (3) triangular-shaped in 5 cases; (4) linear type in 2 cases; (5) bifid in 1 case; (6) absent in 1 case. The ossified type of STSL was found in 3 cases. There were statistically significant differences in the length (P = 0.009), medial width (P = 0.001), lateral width (P = 0.029) of the three types of fan-shaped, band-shaped and triangular-shaped. However, there was no statistical difference in the middle width of the suprascapular opening of the three types (P = 0.340).
Knowing the morphological features and variations of the STSL is important for better understanding the anatomical conditions, which could be taken into consideration during open suprascapular operations or arthroscopic decompressions.
KeywordsSuperior transverse scapular ligament Classification Variation Anatomy Suprascapular
The study was supported by the Innovative Training Program for College Students of Jining Medical University (no. cx2019101).
RL and NW: study design/data collection/writing the manuscript; WL, ZL, SC, XZ, XG and ZT: data collection/cadaver dissection; CL, JW, MD: data analysis/figure processing; JL: study design/manuscript revision. All authors read and approved the final manuscript prior to submission. RL and NW contributed equally to this work.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interests.
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