Abstract. [Purpose] This study examined the difference in nerve conduction velocity (NCV) between two groups: one performed median nerve self-mobilization (self-MNM) in an open kinetic chain (OKC) and the other performed self-MNM in a closed kinetic chain (CKC). Our objective was to establish a therapeutic basis for self-MNM, and to provide an effective method of self-MNM for performance at home.[Methods] Our subjects were 20 healthy female college students without symptoms or signs of peripheral neuropathy. Subjects were divided into two groups, and all were examined in a median motor nerve conduction study before the experiment, prior to self-MNM. The first group performed self-MNM for 15 seconds in OKC while the other group performed self-MNM for 15 seconds in CKC; all subjects keeping their elbow and wrist joints extended during that period. Each set was repeated three times, with a break of 10 seconds inserted between each set. [Results] In the wrist-elbow section, NCV increased in the CKC group, but did not significantly change in the OKC group. In the elbow-axilla section, NCV did not change significantly in either of the two groups.[Conclusion] The results show that, in comparison to self-MNM in CKC, self-MNM in OKC was more effective at increasing nerve conduction velocity in the wrist-elbow section.

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Germ-cell tumors (GCTs) are common in the central nervous system. GCTs are highly sensitive to radiotherapy and chemotherapy and can be cured without radical surgery. However, this tumor produces nonspecific imaging findings, and its rarity can make diagnosis challenging.Here we report a case in which the first diagnosis was uncertain and follow-up imaging revealed intramedullary germinoma. The patient underwent chemotherapy and radiotherapy after the diagnosis.

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