The Analysis and Applications of Dynamic Impression Insole

Summary

The aim of the study was to investigate the effectiveness of dynamic impression insoles on plantar pressure and pain reduction. A dynamic impression insole was made by sequential padding with Plastazote and P-cell under daily walking compression. The pain levels and plantar pressure with the use of dynamic impression insole were assessed and compared with 7-mm Ethylene Vinyl Acetate (EVA) control, 9-mm uncompressed Plastazote and custom molded insoles. Plantar pressure was measured by a Pedar-X mobile system, and pain level was assessed using a Visual Analog Scales.

Conditions

• Metatarsalgia

Interventions

PROCEDURE

Dynamic impression insole

We sequentially padded (1)a 6.5-mm thick P-cell (21 Shore A hardness, Acor orthopedic Inc. Cleveland, Ohio, USA), and (2)a piece of metatarsal pad and arch support made of Ethylene Vinyl Acetate (EVA) (40 Shore A hardness, Schein orthopadie service KG. Remscheid, Germany) to the bottom of the impressed 9-mm thick plastazote (15 Shore A hardness, Schein orthopadie service KG. Remscheid, Germany) with double-sided adhesive tape in the forefoot region and just proximal to the first, second, and third metatarsal head region. We additionally padded a 2-mm thick Multiform (30 Shore A hardness, Schein orthopadie service KG. Remscheid, Germany) on the top of the impressed insole with double-sided adhesive tape.

PROCEDURE

Custom molded insole

The custom molded insole was made by sequentially padded Multiform (30 Shore A hardness, Schein orthopadie service KG. Remscheid, Germany), P-cell (21 Shore A hardness, Acor orthopedic Inc. Cleveland, Ohio, USA), Ethylene Vinyl Acetate (EVA)(40 Shore A hardness, Schein orthopadie service KG. Remscheid, Germany), and cork (50 Shore A hardness, Schein orthopadie service KG. Remscheid, Germany) on the positive plaster cast impressed by an impression box while holding the subtalar joint at a neutral position.

PROCEDURE

9-mm uncompressed Plastazote

We used 9-mm flat Plastazote(15 Shore A hardness, Schein orthopadie service KG. Remscheid, Germany) as an insole

PROCEDURE

7-mm Ethylene Vinyl Acetate (EVA)

We used 7-mm flat Ethylene Vinyl Acetate (EVA) (40 Shore A hardness, Schein orthopadie service KG. Remscheid, Germany) as an insole

Sponsors & Collaborators

• Taipei Veterans General Hospital, Taiwan

  lead OTHER_GOV

Principal Investigators

• Chang Bao-Chi · Taipei Veterans General Hospital, Taiwan

Study Design

Allocation

NON_RANDOMIZED

Purpose

SUPPORTIVE_CARE

Masking

NONE

Model

FACTORIAL

Eligibility

Min Age

18 Years

Max Age

90 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2011-04-30

Primary Completion

2012-06-30

Completion

2012-06-30

Countries

• Taiwan

Study Locations