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Comparison of the Sensory Outcomes between the iRASP and the Free Thenar Flap in patients with a soft tissue defect on a thumb or finger

Comparison of the Sensory Outcomes between the iRASP and the Free Thenar Flap in patients with a volar soft tissue defect on a thumb or finger

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12611000904976
Enrollment
6
Registered
2011-08-24
Start date
2009-10-09
Completion date
Unknown
Last updated
2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

This study is intended to compare sensory restoration between the iRASP (sensate flap) and the free thenar flap (nonsensate flap). Because, it was reported that the free thenar flap has satisfactory result of sensory restoration even though the flap do not incorporate a nerve for innervation. It is worthy whether the sensate iRASP flap sacrificing a nerve is necessary. Our data will be useful for a surgeon deciding between a sensate or non-sensate flap for coverage of a volar soft tissue defect on a thumb or finger.

Interventions

The iRASP flap is a new modification of the free thenar flap for constant innervation with the PCMN(Palmar Cutaneous branch of the Median Nerve). If there is a soft tissue defect on volar aspect in thumb or fingers, especially a pinching site, the iRASP flap would be applied. The procedure of the iRASP flap takes about 3 hours. The sensory outcomes will be checked by SWM(Semmes-Weinstein Monofilaments), S2PD(Static Two-Point Discrimination) and M2PD(Moving Two-Point Discrimination) tests. The re

The iRASP flap is a new modification of the free thenar flap for constant innervation with the PCMN(Palmar Cutaneous branch of the Median Nerve). If there is a soft tissue defect on volar aspect in thumb or fingers, especially a pinching site, the iRASP flap would be applied. The procedure of the iRASP flap takes about 3 hours. The sensory outcomes will be checked by SWM(Semmes-Weinstein Monofilaments), S2PD(Static Two-Point Discrimination) and M2PD(Moving Two-Point Discrimination) tests. The results of sensory outcomes in the iRASp group will be compared with the results in the free thenar flap group. The cases of the free thenar flap which were able to be followed up was selected among the cases that had been performed before the authors designed the iRASP flap. The cases of the free thenar flap would be reviewed by medical record and evaluated by the above methods of sensory evaluation.

Sponsors

JAE-WON YANG
Lead SponsorIndividual

Study design

Allocation
Non-randomised trial
Primary purpose
Treatment

Eligibility

Sex/Gender
All
Age
0 to No maximum
Healthy volunteers
No

Inclusion criteria

In both groups of the iRASP and the free thenar flap, the patients have a volar soft tissue defect on a thumb or finger. A defect is located on pinching area and relatively large not covered easily by small sized flaps like cross finger flap or free partial toe pulp flap.

Exclusion criteria

A patient having a general disease related with nerve recovery or compressive neuropathy should be excluded.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026