Anatomical Probability Model for Tibial and Peroneal Motor Entry Points
Trial statusNot yet recruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age18+
SponsorResearch Inc
About this trial
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.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
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
Disqualifiers
Cadaveric specimen from an individual younger than 18 years at death
Prior trauma involving the lower limb
Prior surgical intervention involving the lower limb
Trial population
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.
Trial design
Design model
Other
Time perspective
Cross-sectional
Treatments tested in this trial
Standardized Cadaveric Lower-Limb Dissection
Other interventionStandardized 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.
Treatment groups
20 Participants
are divided into 1 treatment groupGroup A: Adult Cadaveric Lower-Limb Specimens1 intervention
Trial outcomes
Primary outcomes
1
Mean proportional localization of motor nerve entry points by target muscle
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
Time frame
Periprocedural, during the single standardized cadaveric dissection session for each specimen. 1 daySecondary outcomes
1
Number of motor branches identified by parent nerve and target muscle
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.
Time frame
Periprocedural, during the single standardized cadaveric dissection session for each specimen. 1 daySponsors and contacts
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Source ClinicalTrials.gov
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