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Original Article / œ·¡œ›r˜oœŒ´

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Áª«µ­˜¦r¢gœ¢¼­µ¦ 2551; 18(1): 14 - 18 J Thai Rehabil Med 2008; 18(1): 14 - 18

Correspondence to: Tanyaluck Kwansanit, M.D., PM&R Department Suratthani hospital, Moeng district Suratthani province, THAILAND 84000 E-mail:tanya_sung@yahoo.com

J Thai Rehabil Med 2008; 18(1)

ABSTRACT

Nerve Conduction Study to Detect Nerve Entrapment in Chronic Heel Pain Kwansanit T, Chira - Adisai W.

Department of Rehabilitation Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University

Objectives: To detect nerve entrapment in chronic heel pain patients by electro- diagnostic study.

Study design: Descriptive study.

Setting: Electrodiagnostic room, Department of Rehabilitation Medicine, Faculty of Medicine, Ramathibodi Hospital, Mahidol University

Subjects: Sixteen subjects with 20 feet of chronic heel pain for at least 8 weeks and 10 subjects with no heel pain

Methods: Electrodiagnostic study, including motor, sensory and mixed nerve conduction study (MNCS, SNCS and mixed NCS) of medial and lateral plantar nerves and SNCS of medial calcaneal nerve was performed in the patient and the control groups.

Parameters such as distal latency (DL), amplitude (Amp) and nerve conduction velocity (N CV) were abnormal when compared with mean

+

2SD of the control group or when response was unobtainable.

Results: Abnormal parameters from the studies of mixed NCS or SNCS of medial and lateral plantar nerves was 35 % in the symptomatic and 33.3 % in asymptomatic feet, with no statistic significance (P>0.05).

Abnormality of SNCS of medial calcaneal nerve was 25% in both groups. The MNCS could not reveal any abnormality.

Conclusion: From this study, electrodiag- nostic study might not detect ner ve entrapment in chronic heel pain. Difficulty of the technique and unobtainable response of Mixed- NCS and SNCS in normal subjects could be an obstacle.

Key wor ds: Chronic heel pain, nerve entrapment , nerve conduction study, elec- trodiagnostic study

J Thai Rehabil Med 2008; 18(1): 14 - 18

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—oª¥„µ¦˜¦ª‹œÎµ„¦³Â­ž¦³­µš­´ÉŠ„µ¦

(motor nerve conduction study, MNSC), ‡ªµ¤¦o ¼­¹„ (sensory nerve con- duction study, SNCS) ¨³ž¦³­µš¦ª¤

(mixed nerve conduction study, mixed NCS) …°ŠÁ­oœž¦³­µš medial ¨³ lateral plantar (MPN, LPN) ¨³ SNCS …°ŠÁ­oœž¦³­µš medial calcaneal (MCN) ×¥ª´—Áª¨µÂ Š (distal latency,

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š¸ÉŤn¤¸°µ„µ¦ ¡‡ªµ¤Ÿ·—ž„˜·…°Š mixed NCS ¨³ SNCS …°Š MPN ®¦º° LPN

Ž¹ÉŠÅ¤n¤¸‡ªµ¤Â˜„˜nµŠ°¥nµŠ¤¸œ´¥­Îµ‡´

šµŠ­™·˜· (P>0.05) Ášoµ…oµŠš¸É¤¸°µ„µ¦

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…°Š SNCS …°Š MCN Ášnµ„´œ‡º°¦o°¥¨³ 25 š´ÊŠœ¸Ê˜¦ª‹Å¤n¡‡ªµ¤Ÿ·—ž„˜·…°Š

MNCS

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ž¦³­µš medial ¨³ lateral plantar

‹µ„„µ¦˜¦ª‹

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˜´ªÂž¦ „¨»n¤‡ª‡»¤‹µ„„µ¦«¹„¬µœ¸Ê

(‡nµÁŒ¨¸É¥± ^SD)

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˜µ¦µŠ 1 Áž¦¸¥Áš¸¥˜´ªÂž¦„µ¦˜¦ª‹Á­oœž¦³­µš—oª¥Å¢¢jµª·œ·‹Œ´¥(NCS) „´‡nµ‹µ„„µ¦«¹„¬µ

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¦o°¥¨³‡ªµ¤Ÿ·—ž„˜·‹µ„„µ¦˜¦ª‹

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Á­oœž¦³­µš ˜´ªÂž¦Á­¦·¤ Ášoµš¸É¤¸°µ„µ¦ Ášoµš¸ÉŤn¤¸°µ„µ¦

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- MCN 25 25

- sural 0 0 Amp - MPN, LPN 35 16.7

- sural 0 0

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11.­¤´¥ž¦¸µ­»…. „µ¦«¹„¬µ‡¨ºÉœÅ¢¢jµÁ­oœ

ž¦³­µšÄœŸo¼žiª¥š¸É¤¸°µ„µ¦žª—­oœÁšoµ ªµ¦­µ¦¤®µª·š¥µ¨´¥¤®·—¨ 2537; 1:1-5

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