Clinical Trials Logo

Clinical Trial Summary

The surgery to correct leg & foot deformities in children is a lengthy, & sometimes, difficult procedure. Metal frames are attached to the leg and / or foot and over a period of time the frame is manipulated to obtain the corrected position. During this period the muscles & skin become very tight which causes pain & may pull the joint out of position. When this happens it is sometimes necessary to stop the treatment before the best position is obtained. This means that not only is the child left with an inadequate result but that further surgery is required in the future.

If the tension could be removed whilst the treatment is underway this would reduce the pain, the possibility of joint damage & potentially allow a more satisfactory to be obtained without the need for further surgery.

Botulinum toxin or Botox, as it is commonly called, has the potential to temporarily reduce the tension in the muscles without causing permanent damage.


Clinical Trial Description

Excessive soft tissue tension (i.e.. tight muscles and associated tissues) is the most limiting factor in lengthening and correction of limb length deficiency. Bone lengthening is achieved by surgically breaking the bone and with the use of an extending device, commonly placed on the outside of the limb, the bones ends are distracted. One millimetre a day is commonly the amount of distraction, however the soft tissue increases in length at a slower pace than the bone which leads to soft tissue tension.

Excessive soft tissue tension leads to:

- Soft tissue contractures temporary or permanent short muscles and tendons

- Joint subluxation or instability joints which slip out of line and are loose

- Pain

- Loss of function inability to move joints properly and difficulty walking This puts the joint in a very vulnerable situation and increases the possibility of subluxation. A similar problem arises during tibial lengthening, when the ankle takes up an equinus position (foot pointing down and in). Both deformities reduce the functional ability of the child and risk the joint becoming permanently damaged.

Increasing pain levels accompany these deformities leading to a greater reluctance to comply with treatment or rehabilitation. The lack of joint mobility has further detrimental effect on the limb as it becomes weak and stiff.

These events become a vicious cycle which is difficult to resolve without further intervention. When soft tissue tension is becoming a problem, i.e. pain levels are increasing and difficult to control, or the joint is under threat of instability, the first course of action is to slow or stop the lengthening for a few days which allows the soft tissue tension to decrease. The drawback with this is the potential for the bone ends to start fusing and prevent further lengthening once the process is resumed. To re start the process means the child has to have a further general anaesthetic to enable the bone to be re osteotomised (re broken).

Online Form 6 Some groups of children who undergo lengthening are more susceptible to soft tissue tension than others and therefore prophylactic surgical measures are employed. In anticipation of the soft tissue tension muscles known to create problems are commonly selected for surgical releases. This has been shown to be an effective method for reducing the effects of the tension but it is not without its problems. Releases done at the time of surgery may heal before the lengthening is complete and may need to be repeated. Releases cause trauma to the muscle or tendon which then heals by scar tissue, a structure known to be less pliable than specialised muscle or tendon tissue. Regaining long term function can be compromised.

Temporarily reducing soft tissue tension during the lengthening phase of treatment which has no long term consequences would be an ideal situation. Botulinum toxin has the ability to do this. Paley (2004) used Botulinum toxin as an adjunct to or in place of soft tissue release during femoral lengthening and noted that it seemed to reduce muscle spasm and pain in patients. Unfortunately this was not supported by any form of evaluative research. ;


Study Design

Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Treatment


Related Conditions & MeSH terms


NCT number NCT00624299
Study type Interventional
Source Sheffield Children's NHS Foundation Trust
Contact
Status Withdrawn
Phase Phase 4
Start date March 2008
Completion date May 2010

See also
  Status Clinical Trial Phase
Recruiting NCT05555459 - Performance and Safety Evaluation of Inion CompressOn Screw in Foot and Ankle Surgeries. PMCF Investigation N/A
Completed NCT05579054 - Translation, Validity, and Reliability of the Foot Posture Index (FPI-6) - Turkish Version
Completed NCT04054804 - Digital Foot Check by Using the D-Foot, a New Software
Enrolling by invitation NCT05043636 - Diabetic Neuropathy Screening Study 1.1 + Substudy 1.2-1.3-1.4
Completed NCT05519436 - Investigation of the Relationship Between Plantar Foot Pressure and Balance in Morbidly Obese Individuals
Completed NCT04468555 - Hallux Valgus Manual Therapy Based on Global Postural Reeducation. N/A
Completed NCT05887765 - Effect of Systematic Dexamethasone on the Duration of Popliteal Nerve Block for Anesthesia After Pediatric Ankle Surgery Phase 4
Completed NCT05558449 - Impact of Virtual Reality Hypno-sedation on Functional Recovery and Anxiety in Foot Surgery With Regional Anesthesia Phase 4
Completed NCT03954301 - Using the Hierarchical Cluster Method for Foot Deformities
Completed NCT04327622 - Prevalence and Risk Evaluation of Diabetic Complications of the Foot in A Large Canadian Population
Withdrawn NCT06258499 - Bone Healing Accelerant (BHA) Versus Autologous Bone Grafting (ABG) for Hindfoot or Ankle Arthrodesis Phase 2
Not yet recruiting NCT04627935 - The Effect of Foot Deformities on Physical Activity, Fatigue Level and Quality of Life in Elderly COPD Patients
Completed NCT04312828 - Assessment of Orthopedic Care of the Z-shaped Foot in Infant
Completed NCT04054076 - 10 Years Follow-up Study of Plantar Pressure, Kinetics and Kinematics in a Cohort of Patients Diagnosed With Diabetes N/A
Completed NCT05656014 - The Relationship of the Medial Longitudinal Arch Height With Clinical Features of Knee Osteoarthritis
Not yet recruiting NCT05408156 - Effects of Customized Insoles for Individuals With Symptomatic Hallux Valgus N/A
Not yet recruiting NCT06319937 - Muscle Architecture in Knee Osteoarthritis N/A
Completed NCT05437042 - Effect of Medial Wedge on Static Balance in Pronated Feet