Detaillierte Beitrags-Information
| Beitragstitel | Flexor Digitorum Profundus (FDP) hemi-tendon translocation for loss of substance of the extensor apparatus in zone 1 and/or 2 of the long fingers. An anatomical study. |
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| Beitragscode | P020 |
| Autoren | |
| Präsentationsform | Poster |
| Themengebiete |
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| Abstract |
Intro: Extensor apparatus injuries are very common traumas and loss of substance in zone I and/or II of the long finger is difficult to treat. Surgical treatment options include tendon grafting, extensor tendinoplasty, tenodermodesis and distal interphalangeal joint (DIP) arthrodesis. We have looked at a new approach and present the anatomical bases of the FDP hemi-tendon translocation. Material and method: Ring, middle and index finger of five fresh cadaveric specimens were included in this study. Volar groove in the FDP tendon is identified in zone 1 of the flexor sheath and the tendon is gently pared into radial and ulnar bundles. The selected hemi-tendon is proximally sectioned and led on the dorsal aspect of the finger through a transosseous tunnel at the distal phalanx. Digital Caliper with readability of 0.01mm is used for quantitative evaluation. Results: The distance between the distal pulp and the proximal stump of the hemi-tendon at the proximal edge of A1 pulley is 101.24mm (range 95.8 - 105.32mm). The distance between the distal pulp and the proximal stump of the hemi-tendon after translocation through the transosseous tunnel is 89.4mm (range 85.8 - 95.5mm) and distance between the DIP joint and the anterior 2mm drill hole of the transosseous tunnel is 7.6mm (range 6.8 – 8.5mm). Conclusion: The technical feasibility of this procedure is demonstrated. The main advantage of this procedure is that a distal suture is not required and secure proximal fixation allows immediate active mobilization. The larger cross sectional area of the hemi FDP allows longitudinal splitting to achieve biomimicry of the extensor apparatus. |