Modified Percutaneous Achilles Tendon Lengthening by Triple Hemisection for Achilles Tendon Contracture

Not Applicable

• Conditions: Achilles Tendon Contracture
• Interventions: Procedure: Achilles tendon lengthening

• Registration Number: NCT03887585
• Lead Sponsor: Southwest Hospital, China

Brief Summary

This study aims to evaluate the efficacy and safety of this new therapeutic method, which is based on the percutaneous sliding technique with three hemi-cuts in the tendon.

Detailed Description

This study aims to provide a new therapeutic theory which bases on the percutaneous sliding technique with three hemi-cuts in the tendon. In this study, Achilles tendon parenchymal at distal level is hemisected through the most distal incision, Achilles tendon parenchymal at proximal level is hemisected through the middle incision, then Achilles tendon lengthening is accomplished by the sliding tendon under forceful dorsiflexion. It can better achieve soft tissue balance and reduce the recurrence of Achilles tendon contracture when Achilles tendon strength in plantarflexion is weakened. Thus in this study, the partial aponeurosis of gastrocnemius is cut off at most proximal incision in order to weaken Achilles tendon strength in plantarflexion.

Study Timeline

• Study Start: 2010-01-01
• Primary Completion: 2018-09-30
• Status Verified: 2019-03
• Study First Submitted: 2019-03-20
• Study First Submitted QC: 2019-03-21
• Last Update Submitted: 2019-03-21
• Study First Posted: 2019-03-25
• Last Update Posted: 2019-03-25
• Study Completion: 2020-01-01

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 25

Inclusion Criteria

• Patients older than three years old;
• Severe Achilles tendon contracture and equinus;
• The time after Achilles tendon contracture more than 6 months ;
• Initial Achilles tendon lengthening.

Exclusion Criteria

• Patients younger than 3 years;
• The course of Achilles tendon contracture is within 6 months;
• Patients who have suffered from the Achilles tendon lengthening;
• Obvious contracture of other soft tissues occurs in combination, such as compartment syndrome or extensive scar tissues in calf;
• Osteotomy or tendon transposition is needed.
• Ankle joint is damaged obviously, such as Charcot's joint or Hemophilic arthritis;
• Skin soft-tissue infection in the lower limb.
• Initial Achilles tendon lengthening.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Achilles tendon lengthening	Achilles tendon lengthening	Surgery of percutaneous Achilles tendon lengthening by triple hemisection

Primary Outcome Measures

Name	Time	Method
Changes in the American Orthopaedic Foot & Ankle Society (AOFAS) scores	Before surgery and up to 8 years after surgery	The AOFAS scores of the patients before and after surgery are recorded. The scale ranges from 0-100 points, and increases of the value represent a better outcome.

Secondary Outcome Measures

Name	Time	Method
Equinus recurrence rate	Up to 8 years after surgery	The equinus recurrence rate of the patients after surgery is recorded. Lower value represents a better outcome.
Infection rate	Up to 8 years after surgery	The infection rate of the patients after surgery is recorded. Lower value represents a better outcome.

Trial Locations

Locations (1)

Southwest Hospital; 🇨🇳 Chongqing, China