<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE trials [
<!ELEMENT trials (trial+)>

<!ELEMENT trial (main,contacts,countries,criteria,health_condition_code,health_condition_keyword,intervention_code,
          intervention_keyword,primary_outcome,secondary_outcome,secondary_sponsor,secondary_ids,source_support,ethics_reviews)>

<!ELEMENT main (trial_id,utrn?,reg_name,date_registration,primary_sponsor,public_title,acronym?,scientific_title,scientific_acronym?,
          date_enrolment,type_enrolment,target_size,recruitment_status,url?,study_type,study_design,phase,hc_freetext?,i_freetext?,results_actual_enrolment,results_date_completed,results_url_link,results_summary,           results_date_posted,results_date_first_publication,results_baseline_char,results_participant_flow,results_adverse_events,results_outcome_measures,results_url_protocol,results_IPD_plan, results_IPD_description)>
<!ELEMENT trial_id (#PCDATA)>
<!ELEMENT utrn (#PCDATA)>
<!ELEMENT reg_name (#PCDATA)>
<!ELEMENT date_registration (#PCDATA)><!-- dd/mm/yyyy -->
<!ELEMENT primary_sponsor (#PCDATA)>
<!ELEMENT public_title (#PCDATA)>
<!ELEMENT acronym (#PCDATA)>
<!ELEMENT scientific_title (#PCDATA)>
<!ELEMENT scientific_acronym (#PCDATA)>
<!ELEMENT date_enrolment (#PCDATA)><!-- dd/mm/yyyy -->
<!ELEMENT type_enrolment (#PCDATA)>
<!ELEMENT target_size (#PCDATA)>
<!ELEMENT recruitment_status (#PCDATA)><!-- Pending,Recruiting,Suspended,Complete,Other -->
<!ELEMENT url (#PCDATA)>
<!ELEMENT study_type (#PCDATA)><!-- interventional,observational -->
<!ELEMENT study_design (#PCDATA)>
<!ELEMENT phase (#PCDATA)>
<!ELEMENT hc_freetext (#PCDATA)>
<!ELEMENT i_freetext (#PCDATA)>
<!ELEMENT results_actual_enrolment (#PCDATA)>
<!ELEMENT results_date_completed (#PCDATA)><!-- dd/mm/yyyy -->
<!ELEMENT results_url_link (#PCDATA)>
<!ELEMENT results_summary (#PCDATA)>
<!ELEMENT results_date_posted (#PCDATA)><!-- dd/mm/yyyy -->
<!ELEMENT results_date_first_publication (#PCDATA)><!-- dd/mm/yyyy -->
<!ELEMENT results_baseline_char (#PCDATA)>
<!ELEMENT results_participant_flow (#PCDATA)>
<!ELEMENT results_adverse_events (#PCDATA)>
<!ELEMENT results_outcome_measures (#PCDATA)>
<!ELEMENT results_url_protocol (#PCDATA)>
<!ELEMENT results_IPD_plan (#PCDATA)>
<!ELEMENT results_IPD_description (#PCDATA)>


<!ELEMENT contacts (contact+)>
<!ELEMENT contact (type,firstname,middlename,lastname,address,city,country1,zip,telephone,email,affiliation)>
<!ELEMENT type (#PCDATA)><!-- Public,Scientific -->
<!ELEMENT firstname (#PCDATA)>
<!ELEMENT middlename (#PCDATA)>
<!ELEMENT lastname (#PCDATA)>
<!ELEMENT address (#PCDATA)>
<!ELEMENT city (#PCDATA)>
<!ELEMENT country1 (#PCDATA)>
<!ELEMENT zip (#PCDATA)>
<!ELEMENT telephone (#PCDATA)>
<!ELEMENT email (#PCDATA)>
<!ELEMENT affiliation (#PCDATA)>

<!ELEMENT countries (country2+)>
<!ELEMENT country2 (#PCDATA)>

<!ELEMENT criteria (inclusion_criteria,agemin,agemax,gender,exclusion_criteria)>
<!ELEMENT inclusion_criteria (#PCDATA)>
<!ELEMENT agemin (#PCDATA)>
<!ELEMENT agemax (#PCDATA)>
<!ELEMENT gender (#PCDATA)>
<!ELEMENT exclusion_criteria (#PCDATA)>

<!ELEMENT health_condition_code (hc_code+)>
<!ELEMENT hc_code (#PCDATA)>

<!ELEMENT health_condition_keyword (hc_keyword+)>
<!ELEMENT hc_keyword (#PCDATA)>

<!ELEMENT intervention_code (i_code+)>
<!ELEMENT i_code (#PCDATA)>

<!ELEMENT intervention_keyword (i_keyword+)>
<!ELEMENT i_keyword (#PCDATA)>

<!ELEMENT primary_outcome (prim_outcome+)>
<!ELEMENT prim_outcome (#PCDATA)>

<!ELEMENT secondary_outcome (sec_outcome+)>
<!ELEMENT sec_outcome (#PCDATA)>

<!ELEMENT secondary_sponsor (sponsor_name+)>
<!ELEMENT sponsor_name (#PCDATA)>

<!ELEMENT secondary_ids (secondary_id+)>
<!ELEMENT secondary_id (sec_id,issuing_authority)>
<!ELEMENT sec_id (#PCDATA)>
<!ELEMENT issuing_authority (#PCDATA)>

<!ELEMENT source_support (source_name+)>
<!ELEMENT source_name (#PCDATA)>

<!ELEMENT ethics_reviews (ethics_review+)>
<!ELEMENT ethics_review (status,approval_date,contact_name,contact_address,contact_phone,contact_email)>
<!ELEMENT status (#PCDATA)><!-- Not approved,Approved,NA -->
<!ELEMENT approval_date (#PCDATA)><!-- dd/mm/yyyy -->
<!ELEMENT contact_name (#PCDATA)>
<!ELEMENT contact_address (#PCDATA)>
<!ELEMENT contact_phone (#PCDATA)>
<!ELEMENT contact_email (#PCDATA)>
]>
<trials>
  <trial>
    <main>
      <trial_id>IRCT20230528058315N5</trial_id>
      <utrn></utrn>
      <reg_name>IRCT</reg_name>
      <date_registration>2026-04-28</date_registration>
      <primary_sponsor>Hamedan University of Medical Sciences</primary_sponsor>
      <public_title>Feasibility of using a localized version of a variable-volume socket in a below-knee amputee</public_title>
      <acronym></acronym>
      <scientific_title>Feasibility of a six-week trial using a localized version of a variable-volume socket in a below-knee amputee regarding satisfaction, function, piston movements of the socket, and residual limb volume</scientific_title>
      <scientific_acronym></scientific_acronym>
      <date_enrolment>2026-05-22</date_enrolment>
      <type_enrolment>anticipated</type_enrolment>
      <target_size>1</target_size>
      <recruitment_status>Complete</recruitment_status>
      <url>https://irct.ir/trial/89615</url>
      <study_type>interventional</study_type>
      <study_design>Randomization: N/A, Blinding: Not blinded, Placebo: Not used, Assignment: Single, Purpose: Health service research.</study_design>
      <phase>1</phase>
      <hc_freetext>transtibial amputation.</hc_freetext>
      <i_freetext>Intervention group: Participant will be assessed at three time points during the use of the volume-adjustable socket: baseline, after 7 days, and after 49 days. Satisfaction will be evaluated using the Socket Comfort Score (SCS) and a prosthetic evaluation questionnaire. The vertical displacement of the socket relative to anatomical landmarks will be assessed through photography. Ambulatory capacity will be measured using the Timed Up and Go (TUG) test, and residual limb volume will be quantified via optical scanning. All evaluations will be conducted at the Mobasher Rehabilitation Center in Hamadan. This study does not include a control group..</i_freetext>
      <results_actual_enrolment></results_actual_enrolment>
      <results_date_completed></results_date_completed>
      <results_url_link></results_url_link>
      <results_summary></results_summary>
      <results_date_posted></results_date_posted>
      <results_date_first_publication></results_date_first_publication>
      <results_baseline_char></results_baseline_char>
      <results_participant_flow></results_participant_flow>
      <results_adverse_events></results_adverse_events>
      <results_outcome_measures></results_outcome_measures>
      <results_url_protocol></results_url_protocol>
      <results_IPD_plan>No - There is not a plan to make this available</results_IPD_plan>
      <results_IPD_description>Justification or reason for not sharing IPD is There is no further information</results_IPD_description>
    </main>
    <contacts>
      <contact>
        <type>public</type>
        <firstname>Nahid Tafti</firstname>
        <middlename></middlename>
        <lastname></lastname>
        <address>Shahid Fahmideh</address>
        <city>Hamadan</city>
        <country1>Iran (Islamic Republic of)</country1>
        <zip>6517838840</zip>
        <telephone>+98 81 3838 1571</telephone>
        <email>Na.Tafti@yahoo.com</email>
        <affiliation>Hamedan University of Medical Sciences</affiliation>
      </contact>
      <contact>
        <type>scientific</type>
        <firstname>Nahid Tafti</firstname>
        <middlename></middlename>
        <lastname></lastname>
        <address>Shahid Fahmideh</address>
        <city>Hamadan</city>
        <country1>Iran (Islamic Republic of)</country1>
        <zip>6517838840</zip>
        <telephone>+98 81 3838 1571</telephone>
        <email>Na.Tafti@yahoo.com</email>
        <affiliation>Hamedan University of Medical Sciences</affiliation>
      </contact>
    </contacts>
    <countries>
      <country2>Iran (Islamic Republic of)</country2>
    </countries>
    <criteria>
      <inclusion_criteria>unilateral transtibial amputation
a residual limb length of at least 15 CM
An activity level of K2 or Higher
At least 8 months using the definitive socket
use of total contact socket
A BMI less than 28
Normal range of motion in joints of lower limbs
lack of sensation neuropathy in the skin of residual limb according to evaluation by semmes wein stain monofilament of 5.7</inclusion_criteria>
      <agemin>18 years</agemin>
      <agemax>85 years</agemax>
      <gender>Both</gender>
      <exclusion_criteria>diseased to background diseases or a canser
a history of knee ligament injury or laxity
pain in lower limbs</exclusion_criteria>
    </criteria>
    <health_condition_code>
      <hc_code>Z89.519</hc_code>
    </health_condition_code>
    <health_condition_keyword>
      <hc_keyword>Acquired absence of unspecified leg below knee</hc_keyword>
    </health_condition_keyword>
    <intervention_code>
      <i_code>Rehabilitation</i_code>
    </intervention_code>
    <intervention_keyword>
      <i_keyword>Intervention group: Participant will be assessed at three time points during the use of the volume-adjustable socket: baseline, after 7 days, and after 49 days. Satisfaction will be evaluated using the Socket Comfort Score (SCS) and a prosthetic evaluation questionnaire. The vertical displacement of the socket relative to anatomical landmarks will be assessed through photography. Ambulatory capacity will be measured using the Timed Up and Go (TUG) test, and residual limb volume will be quantified via optical scanning. All evaluations will be conducted at the Mobasher Rehabilitation Center in Hamadan. This study does not include a control group.</i_keyword>
    </intervention_keyword>
    <primary_outcome>
      <prim_outcome>Socket comfort score. Timepoint: After 7 days of use at the baseline of the study and after 49 days of using the new socket. Method of measurement: Single-Question Socket Comfort Score Questionnaire.</prim_outcome>
      <prim_outcome>Total score of the Prosthesis Evaluation Questionnaire (PEQ). Timepoint: After 7 days of use at the baseline of the study and after 49 days of using the new socket. Method of measurement: The Persian version of the Prosthesis Evaluation Questionnaire.</prim_outcome>
    </primary_outcome>
    <secondary_outcome>
      <sec_outcome>The amount of vertical displacement of the socket relative to anatomical landmarks under different standing conditions. Timepoint: Immediately after receiving the socket, after 7 days of using the socket, and after 49 days of using the socket. Method of measurement: Digital photography.</sec_outcome>
      <sec_outcome>Duration of Timed Up &amp; Go test. Timepoint: Immediately after receiving the socket, after 7 days of using the socket, and after 49 days of using the socket. Method of measurement: Instructions for the Timed Up and Go (TUG) test: Upon hearing the signal "Go," the patient rises from a stable chair, walks a distance of three meters, turns around, returns to the chair, and sits down again.</sec_outcome>
      <sec_outcome>Residual limb volume from knee joint level to the end. Timepoint: Immediately after receiving the socket, after 7 days of using the socket, and after 49 days of using the socket. Method of measurement: After determining the knee joint level, an optical scan of the remaining limb will be performed using a Shining 3D Pro HD scanner, and the volume of the remaining limb will be calculated using Geomagic Design X software.</sec_outcome>
    </secondary_outcome>
    <secondary_sponsor>
      <sponsor_name></sponsor_name>
    </secondary_sponsor>
    <secondary_ids>
      <secondary_id>
        <sec_id></sec_id>
        <issuing_authority></issuing_authority>
      </secondary_id>
    </secondary_ids>
    <source_support>
      <source_name>Hamedan University of Medical Sciences</source_name>
    </source_support>
    <ethics_reviews>
      <ethics_review>
        <status>Approved</status>
        <approval_date>2026-04-18</approval_date>
        <contact_name>Ethics Committee of Hamadan University of Medical Sciences</contact_name>
        <contact_address>Shahid Fahmideh Hamadan Hamadan Iran (Islamic Republic of)</contact_address>
        <contact_phone></contact_phone>
        <contact_email></contact_email>
      </ethics_review>
    </ethics_reviews>
  </trial>
</trials>
