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1
Pacinian corpuscle-like structure in the digital tendon sheath and nail bed: a study using late-stage human fetuses

Ji Hyun Kim,Koichiro Sakanaka,Naomitsu Tomita,Gen Murakami,Hiroshi Abe,Shinichi Abe 대한해부학회 2017 Anatomy & Cell Biology Vol.50 No.1
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- 복사/대출신청
Pacinian corpuscle-like structures were identified in the digital tendon sheaths and nail beds of hands obtained from eight of 12 human fetuses of gestational age 20–34 weeks (crown-rump length, 150–290 mm). The aberrant corpuscles were present in tight fibrous tissue connecting the flexor tendon sheath to the dorsal aponeurosis (138 corpuscles in the thumbs and all fingers of eight fetuses); loose fibrous tissue inside the sheath on the dorsal side of the tendon (37 corpuscles in the thumbs and all fingers of four fetuses); and the nail bed (10 clusters in the thumbs and second fingers of four smaller fetuses). The aberrant corpuscles in the tendon sheath were classified into two types: thin and short, with tightly packed lamellae, of diameter 20–40 μm and length 20–200 μm; and thick and long, with loosely packed lamellae, of diameter 70–150 μm and length 0.5–1.5 mm. The small corpuscles tended to form clusters, each containing 5–10 structures. Their similarity indicated that the tight and loose lamellae in these two types of corpuscles corresponded to typical immature and mature corpuscles, respectively, usually distributed along the palmar digital nerve. However, mature, large corpuscles were absent from the nail bed, and most aberrant corpuscles were smaller than typical corpuscles along the nerve. The aberrant corpuscles were apparently incorporated into the tendon sheath or nail bed during fetal vascular development, but they appeared to degenerate after birth due to mechanical stress from the tendon or nail.
2
Anatomic Variation of the Common Palmar Digital Nerves and Arteries

Tian, Dong,Fu, Maoyong The Korean Neurosurgical Society 2015 Journal of Korean neurosurgical society Vol.57 No.3
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Variations in the course and distribution of common palmar digital nerves and arteries are rare. A classic common palmar digital nerves and arteries are defined as concomitant. During routine dissection classes to undergraduate medical students we observed formation of each common palmar digital nerve divided into 2 or 3 branches and formed a ring enclosing the corresponding common palmar digital artery. Knowledge of the anatomical variations of the common palmar digital nerves and arteries is crucial for safe and successful hand surgery.
3
수근관 증후군에서 정중신경의 제1수지 및 수장피지 분지간의 감각신경전도의 비교

박영춘,이동국,임정근,오희종,이상도,이태희 啓明大學校醫科大學 1995 계명의대학술지 Vol.14 No.3
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Carpal tunnel syndrome(CTS) is the most frequent entrapment neuropathy which can be diagnosed by electrophysiological methods. But in some patients with mild symptoms, it is difficult to diagnose with the conventional methods. To evaluate whether the new method is useful for diagnosis of CTS with mild symptoms, sensory nerve conduction studies(SNCS) were performed at the first digital branch(DB) and the palmar cutaneous branch(PCB) of the median nerve in 65 patients with suspicious CTS and in 57 controls. The difference of the SNCS latency between DB nerve and PCB nerve(DB-PCB SNCS) were compared between patients and controls. The results were as follows ; the mean latency, amplitude, and nerve conduction velocity of the difference of DB-PCB in controls were 0.11±0.17msec, 20.75±15.55㎶ and 3.57±4.2m/sec respectively, and those CTS were 0.92±0.75msec, 11.09±22.01㎶ and 14.99±8.22m/sec respectively. The patients were graded into 3 group by clinical symptoms, and the difference of DB-PCB SNCS were conducted significantly by the clinical severity(in ANOVA test). The diagnostic rate of CTS were 53%(70 of 132 wrists) by the conventional method but that was 75.8%(100 of 132 wrists) by the DB-PCB SNCS method. Symptomatic CTS which was normal SNCS by the conventional method were diagnosed 50.8% (33 of 65 wrists) as CTS by the DB-PCB SNCS method. And patients with grade I were diagnosed as CTS in 12%(6 of 50 wrists) by the conventional method, but in 60%(30 of 50 wrists) by the DB-PCB SNCS method. Above results indicate that the new method is simple and useful adjunctive method in the early diagnosis of CTS with mild symptoms.