Accepted Manuscript Site-specific loading at the fifth metatarsal base in rehabilitative devices: Implications for Jones fracture treatment Kenneth J. Hunt , MD Yannick Goeb , BS Rolando Esparza , Maria Malone , Rebecca Shultz , PhD Gordon Matheson , MD, PhD PII:
S1934-1482(14)00243-3
DOI:
10.1016/j.pmrj.2014.05.011
Reference:
PMRJ 1260
To appear in:
PM&R
Received Date: 11 November 2013 Revised Date:
1 May 2014
Accepted Date: 17 May 2014
Please cite this article as: Hunt KJ, Goeb Y, Esparza R, Malone M, Shultz R, Matheson G, Site-specific loading at the fifth metatarsal base in rehabilitative devices: Implications for Jones fracture treatment, PM&R (2014), doi: 10.1016/j.pmrj.2014.05.011. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
ACCEPTED MANUSCRIPT
Site-specific loading at the fifth metatarsal base in rehabilitative devices: Implications for Jones fracture treatment Kenneth J. Hunt, MD*
RI PT
Yannick Goeb, BS Rolando Esparza Maria Malone Rebecca Shultz, PhD
TE D
M AN U
SC
Gordon Matheson, MD, PhD
AC C
EP
*Corresponding Author Affiliation of authors: Human Performance Laboratory and Department of Orthopaedic Surgery Stanford University 450 Broadway Street, MC6342 Redwood City, CA 94063 Ph: (650) 721.7629 Fax: (650) 721.3470 [email protected]
Material not presented at an AAPM&R Annual Assembly. Funded by Stanford University dept of orthopaedic surgery.
ACCEPTED MANUSCRIPT
EP
TE D
M AN U
SC
RI PT
Site-specific loading at the fifth metatarsal base in rehabilitative devices: Implications for Jones fracture treatment
AC C
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
ACCEPTED MANUSCRIPT 1 ABSTRACT Background: Fractures of the fifth metatarsal base are a relatively common injury. Whether
23
treated surgically or non-surgically, injury rehabilitation typically involves immobilization
24
in a rigid sandal or short CAM walker boot.
25
Objective: The primary objective of this study is to determine the peak pressure, contact
26
pressure, and impulse at the base of the fifth metatarsal in three common footwear devices
27
during common gait activities.
28
Design: Retrospective comparative study
29
Setting: Research was conducted in a sports performance laboratory at a university.
30
Participants: Twenty subjects without a recent history of foot injuries volunteered to
31
participate.
32
Methods: Each subject performed three common gait activities (walking, heel walking, and
33
pivoting) in three footwear devices (short CAM walker boot, post-op sandal, running shoe).
34
Pressure data was sampled (100Hz) using individually sized plantar pressure insoles and
35
software (Tekscan). Walking trials were collected at 1.0m/s +/- 5% (FusionSport Timing
36
Gates).
37
Outcome Measurements: Peak pressure, contact pressure, and impulse at the fifth
38
metatarsal base region were determined for all trials for all subjects. Mixed-effect
39
regression models were used to compare pair-wise differences in outcome variables
40
between footwear devices.
41
Results: The CAM walker boot resulted in significantly lower peak pressure at the fifth
42
metatarsal during walking and heel-walking relative to the post-op sandal (p
S1934-1482(14)00243-3
DOI:
10.1016/j.pmrj.2014.05.011
Reference:
PMRJ 1260
To appear in:
PM&R
Received Date: 11 November 2013 Revised Date:
1 May 2014
Accepted Date: 17 May 2014
Please cite this article as: Hunt KJ, Goeb Y, Esparza R, Malone M, Shultz R, Matheson G, Site-specific loading at the fifth metatarsal base in rehabilitative devices: Implications for Jones fracture treatment, PM&R (2014), doi: 10.1016/j.pmrj.2014.05.011. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
ACCEPTED MANUSCRIPT
Site-specific loading at the fifth metatarsal base in rehabilitative devices: Implications for Jones fracture treatment Kenneth J. Hunt, MD*
RI PT
Yannick Goeb, BS Rolando Esparza Maria Malone Rebecca Shultz, PhD
TE D
M AN U
SC
Gordon Matheson, MD, PhD
AC C
EP
*Corresponding Author Affiliation of authors: Human Performance Laboratory and Department of Orthopaedic Surgery Stanford University 450 Broadway Street, MC6342 Redwood City, CA 94063 Ph: (650) 721.7629 Fax: (650) 721.3470 [email protected]
Material not presented at an AAPM&R Annual Assembly. Funded by Stanford University dept of orthopaedic surgery.
ACCEPTED MANUSCRIPT
EP
TE D
M AN U
SC
RI PT
Site-specific loading at the fifth metatarsal base in rehabilitative devices: Implications for Jones fracture treatment
AC C
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
ACCEPTED MANUSCRIPT 1 ABSTRACT Background: Fractures of the fifth metatarsal base are a relatively common injury. Whether
23
treated surgically or non-surgically, injury rehabilitation typically involves immobilization
24
in a rigid sandal or short CAM walker boot.
25
Objective: The primary objective of this study is to determine the peak pressure, contact
26
pressure, and impulse at the base of the fifth metatarsal in three common footwear devices
27
during common gait activities.
28
Design: Retrospective comparative study
29
Setting: Research was conducted in a sports performance laboratory at a university.
30
Participants: Twenty subjects without a recent history of foot injuries volunteered to
31
participate.
32
Methods: Each subject performed three common gait activities (walking, heel walking, and
33
pivoting) in three footwear devices (short CAM walker boot, post-op sandal, running shoe).
34
Pressure data was sampled (100Hz) using individually sized plantar pressure insoles and
35
software (Tekscan). Walking trials were collected at 1.0m/s +/- 5% (FusionSport Timing
36
Gates).
37
Outcome Measurements: Peak pressure, contact pressure, and impulse at the fifth
38
metatarsal base region were determined for all trials for all subjects. Mixed-effect
39
regression models were used to compare pair-wise differences in outcome variables
40
between footwear devices.
41
Results: The CAM walker boot resulted in significantly lower peak pressure at the fifth
42
metatarsal during walking and heel-walking relative to the post-op sandal (p
