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In Vivo Kinematics of the Thumb Carpometacarpal Joint During Three Isometric Functional Tasks

Background The thumb carpometacarpal (CMC) joint is often affected by osteoarthritis—a mechanically mediated disease. Pathomechanics of the CMC joint, however, are not thoroughly understood due to a paucity of in vivo data. Questions/purposes We documented normal, in vivo CMC joint kinematics during...

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Published in:Clinical orthopaedics and related research 2014-04, Vol.472 (4), p.1114-1122
Main Authors: Halilaj, Eni, Rainbow, Michael J., Got, Christopher, Schwartz, Joel B., Moore, Douglas C., Weiss, Arnold-Peter C., Ladd, Amy L., Crisco, Joseph J.
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container_title Clinical orthopaedics and related research
container_volume 472
creator Halilaj, Eni
Rainbow, Michael J.
Got, Christopher
Schwartz, Joel B.
Moore, Douglas C.
Weiss, Arnold-Peter C.
Ladd, Amy L.
Crisco, Joseph J.
description Background The thumb carpometacarpal (CMC) joint is often affected by osteoarthritis—a mechanically mediated disease. Pathomechanics of the CMC joint, however, are not thoroughly understood due to a paucity of in vivo data. Questions/purposes We documented normal, in vivo CMC joint kinematics during isometric functional tasks. We hypothesized there would be motion of the CMC joint during these tasks and that this motion would differ with sex and age group. We also sought to determine whether the rotations at the CMC joint were coupled and whether the trapezium moved with respect to the third metacarpal. Methods Forty-six asymptomatic subjects were CT-scanned in a neutral position and during three functional tasks (key pinch, jar grasp, jar twist), in an unloaded and a loaded position. Kinematics of the first metacarpal, third metacarpal, and the trapezium were then computed. Results Significant motion was identified in the CMC joint during all tasks. Sex did not have an effect on CMC joint kinematics. Motion patterns differed with age group, but these differences were not systematic across the tasks. Rotation at the CMC joint was generally coupled and posture of the trapezium relative to the third metacarpal changed significantly with thumb position. Conclusions The healthy CMC joint is relatively stable during key pinch, jar grasp, and jar twist tasks, despite sex and age group. Clinical Relevance Our findings indicate that directionally coupled motion patterns in the CMC joint, which lead to a specific loading profile, are similar in men and women. These patterns, in addition to other, nonkinematic influences, especially in the female population, may contribute to the pathomechanics of the osteoarthritic joint.
doi_str_mv 10.1007/s11999-013-3063-y
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Pathomechanics of the CMC joint, however, are not thoroughly understood due to a paucity of in vivo data. Questions/purposes We documented normal, in vivo CMC joint kinematics during isometric functional tasks. We hypothesized there would be motion of the CMC joint during these tasks and that this motion would differ with sex and age group. We also sought to determine whether the rotations at the CMC joint were coupled and whether the trapezium moved with respect to the third metacarpal. Methods Forty-six asymptomatic subjects were CT-scanned in a neutral position and during three functional tasks (key pinch, jar grasp, jar twist), in an unloaded and a loaded position. Kinematics of the first metacarpal, third metacarpal, and the trapezium were then computed. Results Significant motion was identified in the CMC joint during all tasks. Sex did not have an effect on CMC joint kinematics. Motion patterns differed with age group, but these differences were not systematic across the tasks. Rotation at the CMC joint was generally coupled and posture of the trapezium relative to the third metacarpal changed significantly with thumb position. Conclusions The healthy CMC joint is relatively stable during key pinch, jar grasp, and jar twist tasks, despite sex and age group. Clinical Relevance Our findings indicate that directionally coupled motion patterns in the CMC joint, which lead to a specific loading profile, are similar in men and women. These patterns, in addition to other, nonkinematic influences, especially in the female population, may contribute to the pathomechanics of the osteoarthritic joint.</description><identifier>ISSN: 0009-921X</identifier><identifier>EISSN: 1528-1132</identifier><identifier>DOI: 10.1007/s11999-013-3063-y</identifier><identifier>PMID: 23681597</identifier><language>eng</language><publisher>Boston: Springer US</publisher><subject>Adolescent ; Adult ; Age Factors ; Aged ; Biomechanical Phenomena ; Carpometacarpal Joints - diagnostic imaging ; Carpometacarpal Joints - physiology ; Conservative Orthopedics ; Female ; Hand ; Hand Strength ; Humans ; Isometric Contraction ; Male ; Medicine ; Medicine &amp; Public Health ; Metacarpal Bones - diagnostic imaging ; Metacarpal Bones - physiology ; Middle Aged ; Movement ; Orthopedics ; Radiographic Image Interpretation, Computer-Assisted ; Range of Motion, Articular ; Sex Factors ; Sports Medicine ; Surgery ; Surgical Orthopedics ; Symposium: Thumb Carpometacarpal Arthritis ; Thumb - physiology ; Tomography, X-Ray Computed ; Trapezium Bone - diagnostic imaging ; Trapezium Bone - physiology ; Weight-Bearing ; Young Adult</subject><ispartof>Clinical orthopaedics and related research, 2014-04, Vol.472 (4), p.1114-1122</ispartof><rights>The Association of Bone and Joint Surgeons® 2013</rights><rights>The Association of Bone and Joint Surgeons 2014</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c536t-597a9a4f0ae85f047e622316f30cec07f63a54d640120369a417d601023d3a7a3</citedby><cites>FETCH-LOGICAL-c536t-597a9a4f0ae85f047e622316f30cec07f63a54d640120369a417d601023d3a7a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC3940759/pdf/$$EPDF$$P50$$Gpubmedcentral$$H</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC3940759/$$EHTML$$P50$$Gpubmedcentral$$H</linktohtml><link.rule.ids>230,315,733,786,790,891,27957,27958,53827,53829</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/23681597$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Halilaj, Eni</creatorcontrib><creatorcontrib>Rainbow, Michael J.</creatorcontrib><creatorcontrib>Got, Christopher</creatorcontrib><creatorcontrib>Schwartz, Joel B.</creatorcontrib><creatorcontrib>Moore, Douglas C.</creatorcontrib><creatorcontrib>Weiss, Arnold-Peter C.</creatorcontrib><creatorcontrib>Ladd, Amy L.</creatorcontrib><creatorcontrib>Crisco, Joseph J.</creatorcontrib><title>In Vivo Kinematics of the Thumb Carpometacarpal Joint During Three Isometric Functional Tasks</title><title>Clinical orthopaedics and related research</title><addtitle>Clin Orthop Relat Res</addtitle><addtitle>Clin Orthop Relat Res</addtitle><description>Background The thumb carpometacarpal (CMC) joint is often affected by osteoarthritis—a mechanically mediated disease. Pathomechanics of the CMC joint, however, are not thoroughly understood due to a paucity of in vivo data. Questions/purposes We documented normal, in vivo CMC joint kinematics during isometric functional tasks. We hypothesized there would be motion of the CMC joint during these tasks and that this motion would differ with sex and age group. We also sought to determine whether the rotations at the CMC joint were coupled and whether the trapezium moved with respect to the third metacarpal. Methods Forty-six asymptomatic subjects were CT-scanned in a neutral position and during three functional tasks (key pinch, jar grasp, jar twist), in an unloaded and a loaded position. Kinematics of the first metacarpal, third metacarpal, and the trapezium were then computed. Results Significant motion was identified in the CMC joint during all tasks. Sex did not have an effect on CMC joint kinematics. Motion patterns differed with age group, but these differences were not systematic across the tasks. Rotation at the CMC joint was generally coupled and posture of the trapezium relative to the third metacarpal changed significantly with thumb position. Conclusions The healthy CMC joint is relatively stable during key pinch, jar grasp, and jar twist tasks, despite sex and age group. Clinical Relevance Our findings indicate that directionally coupled motion patterns in the CMC joint, which lead to a specific loading profile, are similar in men and women. These patterns, in addition to other, nonkinematic influences, especially in the female population, may contribute to the pathomechanics of the osteoarthritic joint.</description><subject>Adolescent</subject><subject>Adult</subject><subject>Age Factors</subject><subject>Aged</subject><subject>Biomechanical Phenomena</subject><subject>Carpometacarpal Joints - diagnostic imaging</subject><subject>Carpometacarpal Joints - physiology</subject><subject>Conservative Orthopedics</subject><subject>Female</subject><subject>Hand</subject><subject>Hand Strength</subject><subject>Humans</subject><subject>Isometric Contraction</subject><subject>Male</subject><subject>Medicine</subject><subject>Medicine &amp; Public Health</subject><subject>Metacarpal Bones - diagnostic imaging</subject><subject>Metacarpal Bones - physiology</subject><subject>Middle Aged</subject><subject>Movement</subject><subject>Orthopedics</subject><subject>Radiographic Image Interpretation, Computer-Assisted</subject><subject>Range of Motion, Articular</subject><subject>Sex Factors</subject><subject>Sports Medicine</subject><subject>Surgery</subject><subject>Surgical Orthopedics</subject><subject>Symposium: Thumb Carpometacarpal Arthritis</subject><subject>Thumb - physiology</subject><subject>Tomography, X-Ray Computed</subject><subject>Trapezium Bone - diagnostic imaging</subject><subject>Trapezium Bone - physiology</subject><subject>Weight-Bearing</subject><subject>Young Adult</subject><issn>0009-921X</issn><issn>1528-1132</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNp1kU1vEzEQhi0EoqHwA7ggS1y4LMz4c31BQoFCoBKXgLggy3W8jcvuOti7lfLvcUipChIn2_Izr2f8EPIU4SUC6FcF0RjTAPKGg-LN_h5ZoGRtg8jZfbIAANMYht9OyKNSruqRC8kekhPGVYvS6AX5vhrp13id6Kc4hsFN0ReaOjptA11v5-GCLl3epSFMzteN6-nHFMeJvp1zHC8rkkOgq3IAcvT0bB79FNNYubUrP8pj8qBzfQlPbtZT8uXs3Xr5oTn__H61fHPeeMnV1NROnHGiAxda2YHQQTHGUXUcfPCgO8WdFBslABlwVVHUGwUIjG-4046fktfH3N18MYSND-OUXW93OQ4u721y0f59M8atvUzXlhsBWpoa8OImIKefcyiTHWLxoe_dGNJcLEoQQqKQbUWf_4NepTnXkX9TXIsWNVQKj5TPqZQcuttmEOxBnj3Ks1WePciz-1rz7O4UtxV_bFWAHYGyO3x_yHee_m_qL_NzpRo</recordid><startdate>20140401</startdate><enddate>20140401</enddate><creator>Halilaj, Eni</creator><creator>Rainbow, Michael J.</creator><creator>Got, Christopher</creator><creator>Schwartz, Joel B.</creator><creator>Moore, Douglas C.</creator><creator>Weiss, Arnold-Peter C.</creator><creator>Ladd, Amy L.</creator><creator>Crisco, Joseph J.</creator><general>Springer US</general><general>Lippincott Williams &amp; 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Pathomechanics of the CMC joint, however, are not thoroughly understood due to a paucity of in vivo data. Questions/purposes We documented normal, in vivo CMC joint kinematics during isometric functional tasks. We hypothesized there would be motion of the CMC joint during these tasks and that this motion would differ with sex and age group. We also sought to determine whether the rotations at the CMC joint were coupled and whether the trapezium moved with respect to the third metacarpal. Methods Forty-six asymptomatic subjects were CT-scanned in a neutral position and during three functional tasks (key pinch, jar grasp, jar twist), in an unloaded and a loaded position. Kinematics of the first metacarpal, third metacarpal, and the trapezium were then computed. Results Significant motion was identified in the CMC joint during all tasks. Sex did not have an effect on CMC joint kinematics. Motion patterns differed with age group, but these differences were not systematic across the tasks. Rotation at the CMC joint was generally coupled and posture of the trapezium relative to the third metacarpal changed significantly with thumb position. Conclusions The healthy CMC joint is relatively stable during key pinch, jar grasp, and jar twist tasks, despite sex and age group. Clinical Relevance Our findings indicate that directionally coupled motion patterns in the CMC joint, which lead to a specific loading profile, are similar in men and women. These patterns, in addition to other, nonkinematic influences, especially in the female population, may contribute to the pathomechanics of the osteoarthritic joint.</abstract><cop>Boston</cop><pub>Springer US</pub><pmid>23681597</pmid><doi>10.1007/s11999-013-3063-y</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record>
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ispartof Clinical orthopaedics and related research, 2014-04, Vol.472 (4), p.1114-1122
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1528-1132
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source PubMed Central
subjects Adolescent
Adult
Age Factors
Aged
Biomechanical Phenomena
Carpometacarpal Joints - diagnostic imaging
Carpometacarpal Joints - physiology
Conservative Orthopedics
Female
Hand
Hand Strength
Humans
Isometric Contraction
Male
Medicine
Medicine & Public Health
Metacarpal Bones - diagnostic imaging
Metacarpal Bones - physiology
Middle Aged
Movement
Orthopedics
Radiographic Image Interpretation, Computer-Assisted
Range of Motion, Articular
Sex Factors
Sports Medicine
Surgery
Surgical Orthopedics
Symposium: Thumb Carpometacarpal Arthritis
Thumb - physiology
Tomography, X-Ray Computed
Trapezium Bone - diagnostic imaging
Trapezium Bone - physiology
Weight-Bearing
Young Adult
title In Vivo Kinematics of the Thumb Carpometacarpal Joint During Three Isometric Functional Tasks
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