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Anatomical Probability Model for Tibial and Peroneal Motor Entry Points

1. September 2026 aktualisiert von: Research Inc
This completed descriptive cadaveric study mapped the motor entry points of lower-leg muscles supplied by the tibial, superficial peroneal, and deep peroneal nerves. Twenty fresh-frozen adult lower-limb specimens without prior trauma or surgery were examined. One extremity from each cadaver was selected by coin toss. Investigators performed standardized posterior, lateral, and anterior compartment dissections, followed each terminal motor branch to the point where it entered the target muscle, and measured its location relative to total leg length. For each muscle, motor entry point location was expressed as a proportion of leg length and summarized using the mean, standard deviation, and probability intervals corresponding to mean plus or minus one and two standard deviations. The study was designed to provide quantitative anatomical reference zones that may support surgical planning for hyperselective neurectomy and related lower-leg procedures.

Studienübersicht

Status

Noch keine Rekrutierung

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

Hyperselective neurectomy requires accurate localization of terminal motor branches and their neuromuscular entry points in the lower leg. This descriptive cadaveric study was designed to establish proportional anatomical reference zones for motor branches of the tibial, superficial peroneal, and deep peroneal nerves.

Fresh-frozen adult lower-limb specimens without prior trauma or prior surgical intervention were examined. One extremity per cadaver was selected by coin toss. Standardized posterior, lateral, and anterior compartment dissections were performed to identify the tibial nerve and the common peroneal nerve, trace the superficial and deep peroneal divisions, and follow terminal motor branches to the point at which each branch entered the corresponding muscle.

For tibial nerve branches, branch location was referenced to the posterior border of the tibia at the midpoint of the proximal epiphysis. For superficial and deep peroneal branches, the proximal reference point was the most superior aspect of the fibular head on its anterior surface. The distal reference point was the point of entry into the target muscle. Total leg length was measured from the knee joint line to the ankle joint line. The motor entry point was calculated as the distance to the entry point divided by total leg length. Distributions were evaluated separately for each muscle using the Shapiro-Wilk test. Means and standard deviations were calculated, and probability intervals corresponding to mean plus or minus one standard deviation and mean plus or minus two standard deviations were used to define the most likely anatomical zones of motor branch entry. When required, logarithmic, square-root, or power transformations were used to approximate normality, with results expressed on the original proportional scale.

Studientyp

Beobachtungs

Einschreibung (Geschätzt)

20

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

Studienorte

      • Bogotá, Kolumbien
        • entro Latinoamericano de Investigación y Entrenamiento en Cirugía Mínimamente Invasiva (CLEMI)
        • Kontakt:

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

  • Erwachsene
  • Älterer Erwachsener

Akzeptiert gesunde Freiwillige

Nein

Probenahmeverfahren

Nicht-Wahrscheinlichkeitsprobe

Studienpopulation

Fresh-frozen adult cadaveric lower-limb specimens available through the institutional cadaveric program at CLEMI in Cundinamarca, Colombia. Specimens were selected according to institutional procurement standards and were required to have no prior trauma or surgical intervention involving the lower limbs. One extremity per cadaver was selected by coin toss for dissection.

Beschreibung

Inclusion Criteria:

  • Adult cadaveric specimen (age at death 18 years or older)
  • Fresh-frozen lower-limb specimen made available under institutional standards for cadaveric research
  • No prior trauma involving the selected lower limb
  • No prior surgical intervention involving the selected lower limb

Exclusion Criteria:

  • Cadaveric specimen from an individual younger than 18 years at death
  • Prior trauma involving the lower limb
  • Prior surgical intervention involving the lower limb

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

Kohorten und Interventionen

Gruppe / Kohorte
Intervention / Behandlung
Adult Cadaveric Lower-Limb Specimens
Twenty fresh-frozen adult lower-limb cadaveric specimens were examined. Specimens had no prior lower-limb trauma or surgical intervention. One extremity per cadaver was selected by coin toss and underwent standardized dissection for identification and measurement of terminal motor branches of the tibial, superficial peroneal, and deep peroneal nerves.
Standardized posterior, lateral, and anterior compartment dissections were performed. The tibial nerve was identified through the posterior approach. The common peroneal nerve was identified near the biceps femoris tendon and traced to its superficial and deep divisions. Motor branches were followed to their points of entry into the target muscles. The location of each motor entry point was measured relative to prespecified tibial or fibular landmarks and normalized to total leg length measured from the knee joint line to the ankle joint line.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Mean proportional localization of motor nerve entry points by target muscle
Zeitfenster: Periprocedural, during the single standardized cadaveric dissection session for each specimen. 1 day
For each terminal motor branch, the distance from the prespecified proximal bony reference point to the point at which the branch entered the target muscle was measured. For tibial branches, the proximal reference was the posterior border of the tibia at the midpoint of the proximal epiphysis. For superficial and deep peroneal branches, the proximal reference was the most superior aspect of the fibular head on its anterior surface. Total leg length was measured from the knee joint line to the ankle joint line. The motor entry point was calculated as distance to the entry point divided by total leg length and expressed as a dimensionless proportion. For each target muscle, the mean, standard deviation, 68% probability interval (mean ±1 standard deviation), and 95% probability interval (mean ±2 standard deviations) were calculated. Target muscles included the medial and lateral gastrocnemius, soleus, flexor digitorum longus, flexor hallucis longus, tibialis posterior, fibularis/peroneus
Periprocedural, during the single standardized cadaveric dissection session for each specimen. 1 day

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Number of motor branches identified by parent nerve and target muscle
Zeitfenster: Periprocedural, during the single standardized cadaveric dissection session for each specimen. 1 day
Count of terminal motor branches arising from the tibial, superficial peroneal, or deep peroneal nerve and entering each dissected target muscle. Results are reported as counts by parent nerve and target muscle.
Periprocedural, during the single standardized cadaveric dissection session for each specimen. 1 day

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Ermittler

  • Hauptermittler: Maria F Garcia Rueda, MD, Orthopedist

Publikationen und hilfreiche Links

Die Bereitstellung dieser Publikationen erfolgt freiwillig durch die für die Eingabe von Informationen über die Studie verantwortliche Person. Diese können sich auf alles beziehen, was mit dem Studium zu tun hat.

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Geschätzt)

1. Oktober 2026

Primärer Abschluss (Geschätzt)

2. Oktober 2026

Studienabschluss (Geschätzt)

2. Oktober 2026

Studienanmeldedaten

Zuerst eingereicht

1. September 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

1. September 2026

Zuerst gepostet (Tatsächlich)

8. September 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

8. September 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

1. September 2026

Zuletzt verifiziert

1. September 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • 006

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Beschreibung des IPD-Plans

it is a research performed by one one surgeon, we do not requiere any other surgeon, once finished is going to be published in a journal

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

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