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akfce.cervical

Page
Published on Wednesday, September 3, 1997 by Gideon Ariel

Cervical Assessment

A computer kinematic assessment is performed for cervical flexion/extension, lateral flexion and rotation. The Examinee is asked to perform each maneuver 8-10 repetitions to full range and as quickly as possible. The events are video taped in a precisely calibrated field for computer analysis. Each event is analyzed for total dynamic range of motion and peak velocity quantity and quality. Consistency of results [coefficient of variation] is considered for determining Examinee effort. After a thorough discussion of expectations, and agreement of understanding by the Examinee, the Examinee is asked to perform the movement events.

Preparation

  • APAS - CAPDV;
  • Chair
  • DV Camcorder with firewire connection to the data collection computer;
  • Calibration frame.
Large frame Small frame

Room Setup

  • Clear the working area of any obstructions that may block the camera views.
  • Place a reflective marker (fixed point) anywhere in the view where the Examinee or Assistant/Examiner will not block it during motion.

Camera Setup

  • Look through the viewfinder, make sure you can see the entire frame - plus enough space surrounding frame - to film the entire sequence.
  • Set focus to auto focus then back to manual focus.
  • Set shutter speed at 1/250 s.

[ Last revised on 01/12/2004 ]

Data Collection

Cervical Flexion/Extension

  Examples   Description
Markers Two markers
# Name Description
1. FOREHEAD Mid forehead
2. CHIN Mid chin
Calibration Small calibration cube

Check computer screen and recheck the position of the cube, the cameras, and the fixed point.

Capture data for 0.5 s.

 

Protocol Turn on camera light and view field. Turn chair so that right side of Examinee is facing the camera.

Make sure Examinee is in center of view field. The Examinee must be aligned in the field of the front portion of the calibration cube. If acceptable, proceed with data collection.

Capture data for 25 s.

  Cervical Flexion Cervical Extension

[ View typical results ]

Cervical Lateral Flexion

  Examples   Description
Markers Two markers
# Name Description
1. FOREHEAD Mid forehead
2. CHIN Mid chin
Calibration Small calibration cube

Check computer screen and recheck the position of the cube, the cameras, and the fixed point.

Capture data for 0.5 s.

 

Protocol Turn on camera light and view field. Turn chair so that Examinee is facing the camera.

Make sure Examinee is in center of view field. The Examinee must be aligned in the field of the front portion of the calibration cube. If acceptable, proceed with data collection.

Capture data for 25 s.

  Cervical Flexion Cervical Extension

[ View typical results ]

Cervical Rotation

  Examples   Description
Markers Two markers
# Name Description
1. L.EAR Crown of head directly above ear - left
2. R.EAR Crown of head directly above ear - right
Calibration Small calibration cube

Check computer screen and recheck the position of the cube, the cameras, and the fixed point.

Capture data for 0.5 s.

 

Protocol Turn on camera light and view field. Turn chair so that crown of head of the Examinee is facing the camera.

Make sure Examinee is in center of view field. The Examinee must be aligned in the field of the front portion of the calibration cube. If acceptable, proceed with data collection.

Capture data for 25 s.

  Cervical Flexion Cervical Extension

[ View typical results ]

Typical Results

Picture 2: Cervical Flexion
Picture 3: Cervical Extension
Chart 1: Cervical Flexion/Extension
Table 1: Cervical Flexion/Extension (F/E)
Range of Motion
[degrees]
Flexion Extension
Norm (mean) 45 -45
Examinee Sample (mean) 21.5 -43.9
Standard Deviation (sd) 3.06 3.23
Range of Motion (rom) 65.4 65.4
Trial Consistency (sd/rom) 4.7% 4.9%
Degrees of Freedom (df) 8 8
H0: Examinee = Norm Reject Accept
Probability (p0) 0.00000 0.17026
Level of Confidence 99% 99%
H1: Side = Opposing Side Reject Accept
Probability (p1) 0.00000 0.00000
Picture 4: Cervical Lateral Flexion - Left
Picture 5: Cervical Lateral Flexion - Right
Chart 2: Cervical Lateral Flexion
Table 2: Cervical Lateral Flexion
Range of Motion
[degrees]
Left Right
Norm (mean) 45 -45
Examinee Sample (mean) 32.9 -32.1
Standard Deviation (sd) 2.41 6.12
Range of Motion (rom) 65 65
Trial Consistency (sd/rom) 3.7% 9.4%
Degrees of Freedom (df) 8 8
H0: Examinee = Norm Reject Reject
Probability (p0) 0.00000 0.00011
Level of Confidence 99% 99%
H1: Side = Opposing Side Accept Accept
Probability (p1) 0.35569 0.35569
Picture 6: Cervical Rotation - Left
Picture 7: Cervical Rotation - Right
Chart 3: Cervical Rotation
Table 3: Cervical Rotation
Range of Motion
[degrees]
Left Right
Norm (mean) 60 -60
Examinee Sample (mean) 32.9 -29.5
Standard Deviation (sd) 2.51 1.79
Range of Motion (rom) 62.3 62.3
Trial Consistency (sd/rom) 4% 2.9%
Degrees of Freedom (df) 9 10
H0: Examinee = Norm Reject Reject
Probability (p0) 0.00000 0.00000
Level of Confidence 99% 99%
H1: Side = Opposing Side Accept Reject
Probability (p1) 0.00100 0.00100
Summary 4: Kinematic Neck Assessment
description side norm mean sd rom cons df0 h0 p0 conf h1 p1
Cervical Flexion 45 21.5 3.06 65.4 4.7% 8 Reject 0.00000 99% Reject 0.00000
Cervical Extension -45 -43.9 3.23 65.4 4.9% 8 Accept 0.17026 99% Accept 0.00000
Cervical Lateral Flexion Left 45 32.9 2.41 65 3.7% 8 Reject 0.00000 99% Accept 0.35569
Cervical Lateral Flexion Right -45 -32.1 6.12 65 9.4% 8 Reject 0.00011 99% Accept 0.35569
Cervical Internal Rotation 60 32.9 2.51 62.3 4% 9 Reject 0.00000 99% Accept 0.00100
Cervical External Rotation -60 -29.5 1.79 62.3 2.9% 10 Reject 0.00000 99% Reject 0.00100
  • Number of tests where Examinee performed subnormal: 5 of 6
  • Number of tests where Examinee performed asymmetrically (one side worse than the other): 2 of 6
  • Number of tests where Examinee performed worse on Left Side than on Right Side: 0 of 0
  • Number of tests where Examinee performed worse on Right Side than on Left Side: 0 of 0

Significant Findings Kinematic Neck Assessment:

See also

akfceFunctional Capacity Evaluation
akfce.caseCase Information
akfce.cervicalCervical Assessment
akfce.elbowElbow Analysis
akfce.emgEMG Protocol
akfce.evalEvaluation
akfce.fceFunctional Capacity Evaluation
akfce.finger.indexFinger Analysis
akfce.finger.thumbThumb Analysis
akfce.gaitGait Analysis
akfce.gripGrip Settings
akfce.interviewExaminee Interview
akfce.jobJob description
akfce.shoulderShoulder Analysis
akfce.strengthStrength Protocol
akfce.wristWrist Analysis
gaitData collection protocols for gait analysis
sportsData collection protocols for sports
Wizard windowQuestions and answers

Reference: /wizard/manual/protocols/akfce.cervical.html
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