Pediatric Gait assessment A review of The Observational gait ...

Pediatric Gait assessment A review of The Observational gait ...

PEDIATRIC GAIT ASSESSMENT JULIE BOUCK, PT, MPT Timed up and go (TUG) Functional gait assessment Dynamic Gait index (DGI)

x i S te Obser vation u al Gai n Scale i

t ( O m alk GS) w t s e t Instrumental Gait analysis (IGA)

RANCHO LOS AMIGOS STANCE PHASE (60% OF CYCLE) STANDARD TERM AMIGOS HEEL STRIKE RANCHO LOS

INITIAL CONTACT FOOT FLAT LOADING RESPONSE MIDSTANCE MIDSTANCE

HEEL OFF TERMINAL STANCE TOE OFF PRESWING SWING PHASE (40% OF CYCLE)

STANDARD TERM LOS AMIGOS RANCHO ACCELERATION INITIAL SWING MIDSWING

MIDSWING DECELERATION SWING TERMINAL THREE ROCKERS HEEL ROCKER.

Lasts from initial contact to the time of foot flat. Its function is to translate the vertical component of the ground reaction force into forward progression of the tibia through the link provided by the eccentric action of tibialis anterior. ANKLE ROCKER. Lasts from the time of foot flat to heel rise. Its function is to control the rate of forward progression of the

body as the tibia rotates at the ankle joint over the fixed foot under the eccentric control of the triceps surae. FOREFOOT ROCKER. Lasts from heel rise until the end of stance. It functions to extend the period of ground contact via the gastrocnemius to exploit the GRF vectors helpful influence on swing initiation. What is the best way to

measure gait? Whilst instrumented gait assessment that provides quantitative measures of threedimensional gait kinematics and kinetics and the electrical activity of muscles remains the gold standard for gait assessment, in the context of routine clinical practice it is still restricted by the fact that it is laboratory based, expensive, and requires a high-level of interpretation skills (Messenger and Bowker, 1987; Davis, 1997; Geurts et al,

1990; Morton, 1999; Coutts, 1999). Simple cost effective, and quick tests that we can deliver to make clinical decisions. Within the rehab and school environment, the time available for functional assessment is often limited to 45 to 60 minutes a session. Standardized test that have been shown to be valid and reliable instruments.

THE TIMED UP AND GO (TUG) Williams et al,(2005): TUG is reliable in children as young as 3 years of age (176 Children without disability/ 41 with CP or Spina bifida) Mean TUG score for children w/o disability 5.9s Preschool children took 6.7 s Spastic Hemiplegia 8.4s (n=4) Spastic Diplegia 10.1 s (n=22) Spastic quadriplegia 28 s (n=6) Spina bifida with low level lesion 8s (n=7)

It integrates transitions and walking skills/responsive to change It is a useful benchmark to establish baseline levels of functional mobility Timed up and Go Cont Dunaway et al (2014) 15 ambulatory Spinal Muscular Atrophy (SMA) patients (10-49 years old) TUG scores correlate with clinical, functional, and

strength assessment and decline linearly over time. Tug was associated significantly with total leg and knee flexor strength and 6 minute walk test. High test re-test reliability DAgostini et al (2014) TUG norms and TUG Down syndrome Tested school age children from ages 3-18 (n=459) Tested children with down syndrome ages 3-18 (n=40) Normative population data for the TUG TUG values can be predicted as a function of age and weight. TUG(s) = 6.387-(age(y) x 0.166) + (weight (Kg) X 0.014).

GMFM correlates with the TUG test in children and adolescents with down syndrome MODIFIED TUG 1-A CONCRETE TASK GIVEN (SUCH AS TOUCH A TARGET ON THE WALL). 2-REPEAT INSTRUCTIONS, SEAT WITH BACKREST, BUT NO ARMS, KNEE ANGLE 90 DEGREES WITH FEET FLAT ON FLOOR 3-NO QUALITATIVE INSTRUCTIONS SUCH AS DONT RUN,

OR WALK AS FAST AS YOU CAN. ( YOU CAN REMIND THEM THAT IT IS NOT A RACE, AND THAT THEY MUST WALK ONLY) 4- TIMING STARTS AS CHILD LEAVES THE SEAT RATHER THAN GO, AND STOPS WHEN BOTTOM TOUCHES THE SEAT. SIX MINUTE WALK TEST The six minute walk test is the distance a person can walk at a constant, uninterrupted, unhurried pace in 6 minutes

Lammers et al (2008) 328 healthy children ages 4-11 Distance walked increases with age. Requires submaximal effort in healthy children

Ulrich et al (2013) Depends mainly on age Heart rate after 6MWT, height and weight add information May help to better assess and compare outcomes in patients with cardiovasulcar and respiratory disease. The walking course must be 30 m in length (100 ft hallway required). Turn around points should be marked with a cone. A line at the beginning and end should be

marked with bright tape. Instructions to the Patient *Note: Instructions must be consistent. (Put the instructions on a laminated card and read them out loud to the patient.) - Describe the walking track or area to the patient. - Explain the objective of the test. - Provide instructions on what to do and what not to do during the test. - Emphasize reporting any untoward effects. - Sample instructions:

You are now going to do a six-minute walking test. The object of this test is to walk as quickly as you can for six minutes around the track (or up and down the corridor etc depending on your track set up) so that you cover as much ground as possible. You may slow down if necessary. If you stop, I want you to continue to walk again as soon as possible. You will be kept informed of the time and you will be encouraged to do your best. Your goal is to walk as far as possible in six minutes. Please do not talk during the test unless you have a problem or if I ask you a question. You must let me know if you have any chest pain or dizziness. When the six minutes is up I will ask you to stop where you are. Do you have any questions? Begin the Test by instructing the patient to start walking and start the stop watch.

Monitor the patient for untoward signs and symptoms. Use standard encouragements during the test. Example: - At minute one: Five minutes remaining. Do your best! - At minute two: Four minutes remaining. You're doing well - keep it up! - At minute three: Half way point. Three minutes remaining. Do your best! - At minute four: Two minutes remaining. You're doing well - keep it up! - At minute five: One minute remaining. Do your best! At the End of the 6MWT Put a marker on the distance walked. Have the patient sit down or if the patient prefers, allow to the patient to stand.

* Immediately record oxygen saturation (SpO2)%, heart rate, and dyspnea rating on the recording sheet. Measure the excess distance with a tape measure and add up the total distance. The patient should remain in a clinical area for at least 15 minutes following an uncomplicated test. In some instances, the clinician may choose to walk with the patient for the entire test (e.g., if continuous oximetry is desired). If this is the case the clinician should try to walk slightly behind the patient to avoid setting the walking pace. Alternatively, if the oximeter is small and lightweight, it may be attached to the patient and checked throughout the test without interfering with walking pace.

If the Patient Stops During the Six Minutes Allow the patient to sit in a chair if they wish. Measure the SpO2% and heart rate. Ask the patient why they stopped. Record the time the patient stopped (but keep the stop watch running). Encourage the patient to begin walking as soon as he/she is feeling better and offer encouragement every 15 seconds if necessary. Monitor the patient for untoward signs and symptoms. Normal Values for 6MWT Healthy Children 4-11

(N=328) Lammers et al. 4 years 383+/-41 m; 5 years 420+/-39 m, 6 years 463+/-40 m; 7 years 488+/-35 m; p<0.05 between each); further modest increases were observed beyond 7 years of age. Reference Values for 6MWT children 517 (N=496) Ulrich et al. DYNAMIC GAIT INDEX Assesses individuals ability to modify balance while walking in the presence of external demands. Lubetzky-Vilnai et al Pilot study to look at DGI in children 10 children with Fetal Alcohol syndrome disorder (FASD) 10 typically developing children age and sex matched The test took no longer than 10 minutes to complete.

There were significant group differences Most children with FASD presented with mild to moderate balance impairments. Interrater agreement was 90%. DYNAMIC GAIT INDEX Some modifications that Lubetzky-Vilnai et al recommended for children with the DGI Demonstrate all items (except for normal walking or normal Stair climbing)

walk and pick up the toy Look to one side and then to the other, vs look right and then left. Walk up and down the stairs as you would at home. (Dont suggest the rail as an option) Observational Gait Scale This is a scale adapted from the Physicians rating scale (Koman et al) which was created to examine the gait of children with CP in the sagittal plane after botulinum toxin A

for equinus gait. This scale did not seem to be sensitive or reliable in detecting specific changes after treatment with BTX-A (Corry et al. 1998) To improve the sensitivity of this scale alterations were made and it became the OGS. (Boyd and Graham 1999) In Rathinam et al (2014) OGS was reported to have very good inter rater reliability, however only the sagittal plane (ankle/foot and knee joints) items scored maximum agreement. Mackey et al (2003)

found the OGS had acceptable inter rater and intra rater reliability for knee and foot position in midstance, initial foot contact and heel rise. There were also lower intra rater reliabilities found for section 5 (hindfoot position) and section 6 (base of Observational Gait Scale continued The OGS seeks to evaluate or measure the amount of change in an individuals gait pattern over time, and could be classified as an

evaluative health index. Recommended for use for Idiopathic toe walking gait assessment in National Guideline Clearinghouse. It is a scale with 8 sections where you score both the L and R lower extremity. A perfect score would be a 22 on each limb. OGS should be observed from front and sides. QUESTIONS ?

References Boyd R, Graham, HK. (1999) Objective measurement of clinical findings in the use of botulinum toxin type A for the management of children with cerebral palsy. Eur J Neurol 6 (Supp 14) S23-35. Corry I, Cosgrove AP, Duff C, McNeill S, Taylor T, Graham HK. (1998) Botulinum Toxin A compared with stretching casts in the treatment of spastic equinus: a randomized prospective trial J pediatr Orthop 18: 304-11. Crapo, R. O. Casaburi, R., et al. (2002). ATS statement: guidelines for the six-minute walk test, AMER THORACIC SOC

1740 BROADWAY, NEW YORK, NY 10019-4374 USA. DAgostini Nicolini-Pannison, R; Donadio, M.V.F: Normative Values for the Timed Up and Go test in children and adolescents and validation for individuals with Down Syndrome. Developmental Medicine and Child Neurology 56: 490-497, 2014 Dunaway, S; Montes, J; Garber, C.E.; Carr, B; Kramer S.S, Kamil-Rosenberg, S; Strauss, N; Sproule, D; De Vivo, D.D: Performance of the timed Up & Go Test in Spinal Muscular Atrophy. Muscle & Nerve, 273-277, August 2014

References Koman LA, Mooney J, Smith B, Goodman A Mulvaney T. (1994) Management of spsticity in cerebral palsy with botulinum-A toxin: report of a preliminary, randomized, double blind tiral. J Pediatric Orthop 14: 299-303. Lammers, A.E.; Hisslop, A.A.;Flynn, Y.;Haworth S.G; : The 6minute walk test: normal values for children of 4-11 years of age. Arch dis Child 93:464-468, 2008 Lubetzky-Vilnai, A;Jirikowic, T.L; McCoy,S.W;: Investigation of the dynamic gait index in children: A Pilot Study. Pediatric Physical Therapy; 23:268-273, 2011

Mackey, A.H., Lobb, G.L., Walt, S.E., Stott, N.S;: Reliability and validity of the Observational Gait Scale in Children with spastic diplegia. Developmental Medicine & child Neurology 45;4-11, 2003 Rathinam, C.;Bateman, A,; Peirson,; Skinner, J;: Observational gait assessment tools in paediatrics A systematic review. Journal of Gait and posture 40,279-285, 2014 References Ulrich, S.; Hildenbrand, F. F.; Treder, U.; Fischler, M.; Keusch, S.; Speich, R: Reference values for the 6-minute

walk test in healthy children for adolescents in Switzerland. BMC Pulmonary Medicine 23:49,2013 Williams, E.N; Carroll S.G; Reddihough, D.S; Phillips, B.A; and Galea, M.P: Investigation of the timed Up &Gotest in children. Developmental Medicine and Child Neruology 47: 518524, 2005 GAIT LAB

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