Intraosseous median nerve entrapment at the level of the elbow can occur after a traumatic event such as fracture and/or dislocation of the elbow. It is considered a rare and severe entity. We present a rare case of nontraumatic median nerve entrapment inside the distal humerus. No article about atraumatic intraosseous entrapment was encountered in literature.
al-QattanMMZukerRMWeinbergMJ. Type 4 median nerve entrapment after elbow dislocation. J Hand Surg Edinb Scotl. 1994;19(5):613-615.
2.
O’BrienACTehZRinaldiM, et al. Intraosseous type 2 median nerve entrapment after posterior elbow dislocation diagnosed on ultrasound with MRI and surgical correlation. Cureus;13(10):e18606.
3.
AggarwalAJanaMKumarV, et al. MR neurography in intraosseous median nerve entrapment. World J Radiol. 2017;9(10):400-404.
O’CallaghanPKFreemanKDavisLC, et al. A rare case of type 2 entrapment of the median nerve after posterior elbow dislocation with MRI and ultrasound correlation. Skeletal Radiol. 2019;48(10):1629-1636.
6.
HallettJ. Entrapment of the median nerve after dislocation of the elbow. A case report. J Bone Joint Surg Br. 1981;63-B(3):408-412.
7.
AydinliogluACirakBAkpinarF, et al. Bilateral median nerve compression at the level of Struthers’ ligament. Case report. J Neurosurg. 2000;92(4):693-696.
8.
LahaRKDujovnyMDeCastroSC. Entrapment of median nerve by supracondylar process of the humerus. Case report. J Neurosurg. 1977;46(2):252-255.
9.
ThomsenPB. Processus supracondyloidea humeri with concomitant compression of the median nerve and the ulnar nerve. Acta Orthop Scand. 1977;48(4):391-393.
10.
StruthersJ. On a peculiarity of the humerus and humeral artery. Mon J Med Sci. 1848;3(28):264-267.
11.
al-NaibI. Humeral supracondylar spur and Struthers’ ligament. A rare cause of neurovascular entrapment in the upper limb. Int Orthop. 1994;18(6):393-394.
12.
AdlerJAWolfJM. Proximal median nerve compression: pronator syndrome. J Hand Surg Am. 2020;45(12):1157-1165.
13.
NkomozepiPXhakazaNSwanepoelE. Superficial brachial artery: a possible cause for idiopathic median nerve entrapment neuropathy. Folia Morphol (Warsz). 2017;76(3):527-531.
14.
Dubois de Mont-MarinGLaulanJLe NenD, et al. Topographic anatomy of structures liable to compress the median nerve at the elbow and proximal forearm. Orthop Traumatol Surg Res. 2021;107(2):102813.
15.
CengizÖ. Median nerve entrapment in an adolescent medial epicondyle fracture of humerus: a case report. Ulus Travma Acil Cerrahi Derg. 2022;28(8):1200-1203.
16.
SimonDMasquijoJJDuncanMJ, et al. Intra-articular median nerve incarceration after spontaneous reduction of a pediatric elbow dislocation: case report and review of the literature. J Pediatr Orthop. 2010;30(2):125-129.