Mahjoub Sabri, Lahmar Ahmed Amine, Zarâa Mourad, Ahmed Belhadj Massoud, Abdelkafi Mohamed, Mbarek Mondher
Department of Orthopedic Surgery, Tunis Trauma Center, Ben Arous, Tunisia.
J Orthop Case Rep. 2018 Sep-Oct;8(5):40-42. doi: 10.13107/jocr.2250-0685.1202.
The ductal syndromes of the shoulder combine all the compressive processes of the suprascapular nerve at the level of its passage in the spinoglenoid notch and this for several causes. The most common is a lesion of the labrum resulting in the formation of a cyst. These cysts are rare and often underestimated. Provoking a compression of the suprascapular nerve, they are likely to cause an atrophy of the external rotator muscles of the cuff.
We present a rare case of a paraglenoid cyst resulting in a ductal syndrome by suprascapular nerve compression. A 56-year-old man consulted our department for chronic pain of the left shoulder with a decrease in muscle strength. On clinical examination, the patient had a deficit of external rotation with a clear amyotrophy of the infraspinatus fossa. We opted for arthroscopic surgical resection. At the last follow-up, the patient did not show any more pain, with a total recovery of muscle strength.
The clinical signs of compressive processes of the suprascapular nerve are quite misleading, so establishing a correct diagnosis and surgical management is vital before irreversible muscularatrophy takes place.
肩部的导管综合征包括肩胛上神经在肩胛下切迹处走行时的所有受压过程，其原因有多种。最常见的是盂唇损伤导致囊肿形成。这些囊肿很罕见，且常被低估。它们会压迫肩胛上神经，可能导致肩袖外旋肌萎缩。
我们报告一例罕见的盂旁囊肿导致肩胛上神经受压引起导管综合征的病例。一名56岁男性因左肩慢性疼痛伴肌肉力量减弱前来我科就诊。临床检查时，患者外旋功能缺失，冈下窝明显肌萎缩。我们选择了关节镜手术切除。在最后一次随访时，患者不再疼痛，肌肉力量完全恢复。
肩胛上神经受压过程的临床体征颇具误导性，因此在不可逆的肌肉萎缩发生之前，做出正确诊断并进行手术治疗至关重要。
