Calcaneal Angles And Postoperative Body Balance Following Internal Fixation (POIF)

Biomechanical Relationship Between Calcaneal Alignment Angles And Postoperative Body Balance Following Internal Fixation

The goal of this observational cross sectionl study is to explore the correlation between Böhler angle and dynamic postural stability indices after calcaneal internal fixation.

in calcaneal fracture post internal fixation both gender, (18-40) yr.

Study Overview

• Status: Not yet recruiting
• Conditions: Body Balnace and Calcaneal Fractures
• Intervention / Treatment: Diagnostic test: Biodex balance system

Detailed Description

The goal of this observational cross sectionl study is to explore the correlation between Böhler angle and dynamic postural stability indices after calcaneal internal fixation.

• To explore the correlation between Böhler angle and fall risk index after calcaneal internal fixation.
• To explore the correlation between Gissane angle and dynamic postural stability indices after calcaneal internal fixation.
• To explore the correlation between Gissane angle and fall risk index after calcaneal internal fixation.
• To explore if Böhler angle can predict dynamic postural stability indices after calcaneal internal fixation.
• To explore if Böhler angle can predict fall risk index after calcaneal internal fixation.
• To explore if Gissane angle can predict dynamic postural stability indices after calcaneal internal fixation.
• To explore if Gissane angle can predict fall risk index after explore in calcaneal fracture post internal fixation both gender, (18-40) yr, The main questions it aims to answer are: • Will there be a significant correlation between Böhler angle and dynamic postural stability indices after calcaneal internal fixation?
• Will there be a significant correlation between Böhler angle and fall risk index after calcaneal internal fixation?
• Will there be a significant correlation between Gissane angle and dynamic postural stability indices after calcaneal internal fixation?
• Will there be a significant correlation between Gissane angle and fall risk index after calcaneal internal fixation?
• Will Böhler angle can significantly predict dynamic postural stability indices after calcaneal internal fixation?
• Will Böhler angle can significantly predict fall risk index after calcaneal internal fixation?
• Will Gissane angle can significantly predict dynamic postural stability indices after calcaneal internal fixation?
• Will Gissane angle can significantly predict fall risk index after calcaneal internal fixation?

• Study Type: Observational
• Enrollment (Estimated): 80

Contacts and Locations

• Study Contact: Name: Nassif M Mousa, Master; Phone Number: 0201011980133 +201273152233; Email: nassif.magdy.mousa@gmail.com
• Study Contact Backup: Name: Azza M Abdelmohsen, Assistant Professor of Biomech; Phone Number: 0201145046304; Email: dr_azzamohammed@yahoo.com

Study Locations

• Egypt
  • Dokki
    • Cairo, Dokki, Egypt
      • Cairo University / Faculty of Physical Therapy
      • Contact: Azza M Abdelmohsen, Assistant Professor of Biomech; Phone Number: 0201145046304; Email: dr_azzamohammed@yahoo.com
      • Contact: Omaima E Saleh, Lecturer of Biomechanics; Phone Number: 0201146607303; Email: Omaima287@cu.edu.eg

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult
• Accepts Healthy Volunteers: No

• Sampling Method: Non-Probability Sample

Study Population

volunteers from both genders aged from 18 to 40 y who had calcaneal fracture and anderwent internal fixation will participate in the study

Description

Inclusion Criteria:

• Participants referred from orthopedic surgeon with calcaneal fracture treated with internal fixation.
• Adults aged 18-40 .
• Unilateral displaced intra-articular calcaneal fracture .
• Underwent internal fixation (plate/screws) .
• At least 1 years follow up postoperative .
• Able to stand independently.
• Both males and females.

Exclusion Criteria:

• Problems with cognition, vision, or any other medical issue that might compromise their ability to safely engage in the selected balancing measures should be avoided .
• Those with foot or ankle sensitivity loss and a systemic inflammatory illness, including diabetes mellitus, rheumatoid arthritis, or ankylosing spondylitis .
• Patients with vestibular or neurological disorders .
• Accompanying lower limb and spine fractures, which required internal fixation, talus fractures, thoracolumbar burst fractures, femur fractures, and tibia fractures), severe knee arthrosis, postoperative osteomyelitis of the calcaneus, and subtalar arthrodesis performed before this study because of subtalar arthrosis and pain .
• Patients who had lower limb dysfunction; and women who are pregnant and are in their lactation period .
• Refusal to give informed consent to participate in the study .
• Any associated fracture, bilateral fractures, associated peroneal tendon dislocation, postoperative wound breakdown and superficial or deep infection, age younger than .
• Calcaneal heel spur
• Foot deformity

Study Plan

How is the study designed?

Number of groups / cohorts

1

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
single group study; The group of study is the group of intervention who has calcaneal fracture and under wented internl fixation	Diagnostic test: Biodex balance system; Assessment for body balance via Biodex Balance System

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
1. Anterior/Posterior stability index (APSI)	Assessment of body balance	single time point
Medial/Lateral stability index (MLSI)	Assessment of body balance	single time point
Overall stability index (OSI)	Assessment of body balance	single time point
Fall Risk index (FRI)	Assessment of risk of fall	single time point
Böhler angle	calcaneal alignment angles	single time point
Gissane angle	calcaneal alignment angles	single time point

Collaborators and Investigators

• Sponsor: Cairo University
• Investigators: Study Chair: Azza M Abdelmohsen, Assistant Professor of Biomech, Cairo University

Study record dates

Study Major Dates

• Study Start (Estimated): May 10, 2026
• Primary Completion (Estimated): January 15, 2028
• Study Completion (Estimated): April 15, 2028

Study Registration Dates

• First Submitted: April 29, 2026
• First Submitted That Met QC Criteria: May 9, 2026
• First Posted (Actual): May 15, 2026

Study Record Updates

• Last Update Posted (Actual): May 15, 2026
• Last Update Submitted That Met QC Criteria: May 9, 2026
• Last Verified: May 1, 2026

More Information

Terms related to this study

• Keywords: Biodex balance systeme; Bohlar and Gissane angles; Post Operative Calcaneal Internal Fixation
• Other Study ID Numbers: not approved yet

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated device product: Yes