Immobilisation of the knee and ankle and its impact on drivers’ braking times A DRIVING SIMULATOR STUDY

A Waton,, R Kakwani, N.J Cooke,, Damien Litchfield, D Kok, H Middleton, L Irwin

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

The purpose of this study was to investigate the effects of right leg restriction at the knee, ankle or both, on a driver's braking times. Previous studies have not investigated the effects of knee restriction on braking performance. A total of 23 healthy drivers performed a series of emergency braking tests in a driving simulator in either an above-knee plaster cast, a below-knee cast, or in a knee brace with an increasing range of restriction. The study showed that total braking reaction time was significantly longer when wearing an above knee plaster cast, a below-knee plaster cast or a knee brace fixed at 0°, compared with braking normally (p < 0.001). Increases in the time taken to move the foot from the accelerator to the brake accounted for some of the increase in the total braking reaction time. Unexpectedly, thinking time also increased with the level of restriction (p < 0.001). The increase in braking time with an above-knee plaster cast in this study would increase the stopping distance at 30 miles per hour by almost 3 m. These results suggest that all patients wearing any lower-limb plaster cast or knee brace are significantly impaired in their ability to perform an emergency stop. We suggest changes to the legislation to prevent patients from driving with lower-limb plaster casts or knee braces.
Original languageEnglish
Pages (from-to)928-931
JournalThe Journal of Bone and Joint Surgery
Volume93-B
Issue number7
DOIs
Publication statusPublished - 15 Mar 2011

Fingerprint

Ankle
Immobilization
Knee
Surgical Casts
Braces
Reaction Time
Lower Extremity
Emergencies
Aptitude
Legislation
Foot
Leg

Cite this

Waton, A ; Kakwani, R ; Cooke, N.J ; Litchfield, Damien ; Kok, D ; Middleton, H ; Irwin, L. / Immobilisation of the knee and ankle and its impact on drivers’ braking times A DRIVING SIMULATOR STUDY. In: The Journal of Bone and Joint Surgery. 2011 ; Vol. 93-B, No. 7. pp. 928-931.
@article{2e32535ad5924e0ebb43725f82e2fdcb,
title = "Immobilisation of the knee and ankle and its impact on drivers’ braking times A DRIVING SIMULATOR STUDY",
abstract = "The purpose of this study was to investigate the effects of right leg restriction at the knee, ankle or both, on a driver's braking times. Previous studies have not investigated the effects of knee restriction on braking performance. A total of 23 healthy drivers performed a series of emergency braking tests in a driving simulator in either an above-knee plaster cast, a below-knee cast, or in a knee brace with an increasing range of restriction. The study showed that total braking reaction time was significantly longer when wearing an above knee plaster cast, a below-knee plaster cast or a knee brace fixed at 0°, compared with braking normally (p < 0.001). Increases in the time taken to move the foot from the accelerator to the brake accounted for some of the increase in the total braking reaction time. Unexpectedly, thinking time also increased with the level of restriction (p < 0.001). The increase in braking time with an above-knee plaster cast in this study would increase the stopping distance at 30 miles per hour by almost 3 m. These results suggest that all patients wearing any lower-limb plaster cast or knee brace are significantly impaired in their ability to perform an emergency stop. We suggest changes to the legislation to prevent patients from driving with lower-limb plaster casts or knee braces.",
author = "A Waton, and R Kakwani and N.J Cooke, and Damien Litchfield and D Kok and H Middleton and L Irwin",
year = "2011",
month = "3",
day = "15",
doi = "10.1302/0301-620X.93B7.25859",
language = "English",
volume = "93-B",
pages = "928--931",
journal = "Bone and Joint Journal",
issn = "2049-4394",
publisher = "British Editorial Society of Bone and Joint Surgery",
number = "7",

}

Immobilisation of the knee and ankle and its impact on drivers’ braking times A DRIVING SIMULATOR STUDY. / Waton, A; Kakwani, R; Cooke, N.J; Litchfield, Damien; Kok, D; Middleton, H; Irwin, L.

In: The Journal of Bone and Joint Surgery, Vol. 93-B, No. 7, 15.03.2011, p. 928-931.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Immobilisation of the knee and ankle and its impact on drivers’ braking times A DRIVING SIMULATOR STUDY

AU - Waton,, A

AU - Kakwani, R

AU - Cooke,, N.J

AU - Litchfield, Damien

AU - Kok, D

AU - Middleton, H

AU - Irwin, L

PY - 2011/3/15

Y1 - 2011/3/15

N2 - The purpose of this study was to investigate the effects of right leg restriction at the knee, ankle or both, on a driver's braking times. Previous studies have not investigated the effects of knee restriction on braking performance. A total of 23 healthy drivers performed a series of emergency braking tests in a driving simulator in either an above-knee plaster cast, a below-knee cast, or in a knee brace with an increasing range of restriction. The study showed that total braking reaction time was significantly longer when wearing an above knee plaster cast, a below-knee plaster cast or a knee brace fixed at 0°, compared with braking normally (p < 0.001). Increases in the time taken to move the foot from the accelerator to the brake accounted for some of the increase in the total braking reaction time. Unexpectedly, thinking time also increased with the level of restriction (p < 0.001). The increase in braking time with an above-knee plaster cast in this study would increase the stopping distance at 30 miles per hour by almost 3 m. These results suggest that all patients wearing any lower-limb plaster cast or knee brace are significantly impaired in their ability to perform an emergency stop. We suggest changes to the legislation to prevent patients from driving with lower-limb plaster casts or knee braces.

AB - The purpose of this study was to investigate the effects of right leg restriction at the knee, ankle or both, on a driver's braking times. Previous studies have not investigated the effects of knee restriction on braking performance. A total of 23 healthy drivers performed a series of emergency braking tests in a driving simulator in either an above-knee plaster cast, a below-knee cast, or in a knee brace with an increasing range of restriction. The study showed that total braking reaction time was significantly longer when wearing an above knee plaster cast, a below-knee plaster cast or a knee brace fixed at 0°, compared with braking normally (p < 0.001). Increases in the time taken to move the foot from the accelerator to the brake accounted for some of the increase in the total braking reaction time. Unexpectedly, thinking time also increased with the level of restriction (p < 0.001). The increase in braking time with an above-knee plaster cast in this study would increase the stopping distance at 30 miles per hour by almost 3 m. These results suggest that all patients wearing any lower-limb plaster cast or knee brace are significantly impaired in their ability to perform an emergency stop. We suggest changes to the legislation to prevent patients from driving with lower-limb plaster casts or knee braces.

U2 - 10.1302/0301-620X.93B7.25859

DO - 10.1302/0301-620X.93B7.25859

M3 - Article

VL - 93-B

SP - 928

EP - 931

JO - Bone and Joint Journal

JF - Bone and Joint Journal

SN - 2049-4394

IS - 7

ER -