Tendon and nerve displacement at the wrist during finger movements

U. Chris Ugbolue, Wei-Hsiu Hsu, Robert J Goitz, Zong-Ming Li

Research output: Contribution to journalArticle

Abstract

BACKGROUND: Repetitive motion of the hand has been suggested as a major factor of pathogenesis of cumulative trauma disorders (e.g., carpal tunnel syndrome). The purpose of this study was to investigate the 3D displacement of the median nerve and extrinsic finger flexor tendons (flexor digitorum superficialis; flexor digitorum profundus) as a function of flexion/extension of metacarpophalangeal joints of the index and middle fingers.

METHODS: Shim markers were placed on the median nerve, flexor digitorum superficialis, and flexor digitorum profundus tendons at the wrist region of seven cadaveric specimens for the purpose of digitization of tendon and nerve locations. The metacarpophalangeal joint of the index or middle finger was moved from 15 degrees extension to 75 degrees of flexion while the markers were digitized at increments of 15 degrees. Marker displacements were determined in the longitudinal, radial-ulnar, and dorsal-palmar directions.

FINDINGS: Movement of metacarpophalangeal joint of the index or middle finger caused tendon and nerve displacements in the longitudinal, radial-ulnar, and dorsal-palmar directions. The longitudinal displacements of the median nerve and the flexor tendons were linearly correlated with angular movement of the metacarpophalangeal joint. The maximum longitudinal displacements of the flexor digitorum superficialis tendon, flexor digitorum profundus tendon, and median nerve were, on average, 14.7 mm, 11.9 mm, and 3.0 mm, respectively, for the index finger; and 18.4 mm, 14.5 mm, and 4.0 mm, respectively, for the middle finger. The radial-ulnar and dorsal-palmar displacements were irregular and relatively small. The maximum displacements in these transverse directions fell in the range of 1.4-5.1 mm for the median nerve and 1.9-7.3 mm for the flexor tendons.

INTERPRETATIONS: Finger flexor tendons and median nerve move not only concurrently, but also differentially, in all anatomical directions. Tendon and nerve movement during prolonged repetitive hand movement may cause hand disorders such as carpal tunnel syndrome.

Original languageEnglish
Pages (from-to)50-56
Number of pages7
JournalClinical Biomechanics
Volume20
Issue number1
DOIs
Publication statusPublished - Jan 2005
Externally publishedYes

Fingerprint

Wrist
Tendons
Fingers
Median Nerve
Metacarpophalangeal Joint
Carpal Tunnel Syndrome
Hand
Cumulative Trauma Disorders
Direction compound

Keywords

  • Aged
  • Cadaver
  • Fingers
  • Humans
  • In Vitro Techniques
  • Median Nerve
  • Metacarpophalangeal Joint
  • Movement
  • Range of Motion, Articular
  • Statistics as Topic
  • Tendons
  • Wrist
  • Journal Article
  • Research Support, Non-U.S. Gov't

Cite this

Ugbolue, U. Chris ; Hsu, Wei-Hsiu ; Goitz, Robert J ; Li, Zong-Ming. / Tendon and nerve displacement at the wrist during finger movements. In: Clinical Biomechanics. 2005 ; Vol. 20, No. 1. pp. 50-56.
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Tendon and nerve displacement at the wrist during finger movements. / Ugbolue, U. Chris; Hsu, Wei-Hsiu; Goitz, Robert J; Li, Zong-Ming.

In: Clinical Biomechanics, Vol. 20, No. 1, 01.2005, p. 50-56.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Tendon and nerve displacement at the wrist during finger movements

AU - Ugbolue, U. Chris

AU - Hsu, Wei-Hsiu

AU - Goitz, Robert J

AU - Li, Zong-Ming

PY - 2005/1

Y1 - 2005/1

N2 - BACKGROUND: Repetitive motion of the hand has been suggested as a major factor of pathogenesis of cumulative trauma disorders (e.g., carpal tunnel syndrome). The purpose of this study was to investigate the 3D displacement of the median nerve and extrinsic finger flexor tendons (flexor digitorum superficialis; flexor digitorum profundus) as a function of flexion/extension of metacarpophalangeal joints of the index and middle fingers.METHODS: Shim markers were placed on the median nerve, flexor digitorum superficialis, and flexor digitorum profundus tendons at the wrist region of seven cadaveric specimens for the purpose of digitization of tendon and nerve locations. The metacarpophalangeal joint of the index or middle finger was moved from 15 degrees extension to 75 degrees of flexion while the markers were digitized at increments of 15 degrees. Marker displacements were determined in the longitudinal, radial-ulnar, and dorsal-palmar directions.FINDINGS: Movement of metacarpophalangeal joint of the index or middle finger caused tendon and nerve displacements in the longitudinal, radial-ulnar, and dorsal-palmar directions. The longitudinal displacements of the median nerve and the flexor tendons were linearly correlated with angular movement of the metacarpophalangeal joint. The maximum longitudinal displacements of the flexor digitorum superficialis tendon, flexor digitorum profundus tendon, and median nerve were, on average, 14.7 mm, 11.9 mm, and 3.0 mm, respectively, for the index finger; and 18.4 mm, 14.5 mm, and 4.0 mm, respectively, for the middle finger. The radial-ulnar and dorsal-palmar displacements were irregular and relatively small. The maximum displacements in these transverse directions fell in the range of 1.4-5.1 mm for the median nerve and 1.9-7.3 mm for the flexor tendons.INTERPRETATIONS: Finger flexor tendons and median nerve move not only concurrently, but also differentially, in all anatomical directions. Tendon and nerve movement during prolonged repetitive hand movement may cause hand disorders such as carpal tunnel syndrome.

AB - BACKGROUND: Repetitive motion of the hand has been suggested as a major factor of pathogenesis of cumulative trauma disorders (e.g., carpal tunnel syndrome). The purpose of this study was to investigate the 3D displacement of the median nerve and extrinsic finger flexor tendons (flexor digitorum superficialis; flexor digitorum profundus) as a function of flexion/extension of metacarpophalangeal joints of the index and middle fingers.METHODS: Shim markers were placed on the median nerve, flexor digitorum superficialis, and flexor digitorum profundus tendons at the wrist region of seven cadaveric specimens for the purpose of digitization of tendon and nerve locations. The metacarpophalangeal joint of the index or middle finger was moved from 15 degrees extension to 75 degrees of flexion while the markers were digitized at increments of 15 degrees. Marker displacements were determined in the longitudinal, radial-ulnar, and dorsal-palmar directions.FINDINGS: Movement of metacarpophalangeal joint of the index or middle finger caused tendon and nerve displacements in the longitudinal, radial-ulnar, and dorsal-palmar directions. The longitudinal displacements of the median nerve and the flexor tendons were linearly correlated with angular movement of the metacarpophalangeal joint. The maximum longitudinal displacements of the flexor digitorum superficialis tendon, flexor digitorum profundus tendon, and median nerve were, on average, 14.7 mm, 11.9 mm, and 3.0 mm, respectively, for the index finger; and 18.4 mm, 14.5 mm, and 4.0 mm, respectively, for the middle finger. The radial-ulnar and dorsal-palmar displacements were irregular and relatively small. The maximum displacements in these transverse directions fell in the range of 1.4-5.1 mm for the median nerve and 1.9-7.3 mm for the flexor tendons.INTERPRETATIONS: Finger flexor tendons and median nerve move not only concurrently, but also differentially, in all anatomical directions. Tendon and nerve movement during prolonged repetitive hand movement may cause hand disorders such as carpal tunnel syndrome.

KW - Aged

KW - Cadaver

KW - Fingers

KW - Humans

KW - In Vitro Techniques

KW - Median Nerve

KW - Metacarpophalangeal Joint

KW - Movement

KW - Range of Motion, Articular

KW - Statistics as Topic

KW - Tendons

KW - Wrist

KW - Journal Article

KW - Research Support, Non-U.S. Gov't

U2 - 10.1016/j.clinbiomech.2004.08.006

DO - 10.1016/j.clinbiomech.2004.08.006

M3 - Article

VL - 20

SP - 50

EP - 56

JO - Clinical Biomechanics

JF - Clinical Biomechanics

SN - 0268-0033

IS - 1

ER -