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This is a single center prospective study comparing the extension pin block vs pin orthosis-extension block pinning for bonny mallet fractures.
Mallet finger is a fracture of the distal phalanx involving the dorsal articular surface. It is important because it concerns the extensor tendon attachment site. The clinical manifestation of mallet finger formation is active extension loss at the DIP joint. If the injury is not treated and becomes chronic, the DIP passive extension is gradually lost and a hyperextension posture occurs in the PIP joint due to the compensatory swan neck deformity. Non-surgical methods have an important place in the treatment of mallet finger injuries. The indications for surgical treatment of mallet finger injuries are a matter of debate. Conditions that are widely accepted as definite surgical indications are open injury, individuals who cannot work with a splint, the ruptured dorsal part is large and includes more than 30% of the articular surface, and the presence of palmar subluxation in the DIP. Among the mallet finger surgical treatments, the extension pin block technique , bracing in extension, hook method are defined.
In this prospective study, we aimed to compare the extension pin block technique with the pin orthosis-extension block pinning. In comparison, the patients eligible for the study will be evaluated according to Crawford criteria for function evaluation, complications (infection, nail deformities, skin necrosis, DIP joint osteoarthritis), recovery time.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| extension pin block | Active Comparator | this is the technique for mallet finger where 2 pins are used, one for the extension block and other intramedullary for the extension posture |
|
| pin orthosis- extension block pin | Active Comparator | this is the technique for mallet finger where only 1 pin is used for extension block and an orthosis is applied for the extension posture |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| cextension pin block | Procedure | this is the technique for mallet finger where 2 pins are used, one for the extension block and other intramedullary for the extension posture |
|
| Measure | Description | Time Frame |
|---|---|---|
| Crawford criteria | functional scoring for the DIP joint, focuses on range of motion and pain | postoperative 1st day |
| Crawford criteria | functional scoring for the DIP joint, focuses on range of motion and pain | postoperative 1st month |
| Crawford criteria | functional scoring for the DIP joint, focuses on range of motion and pain | postoperative 3rd month |
| Crawford criteria | functional scoring for the DIP joint, focuses on range of motion and pain | postoperative 6th month |
| Crawford criteria | functional scoring for the DIP joint, focuses on range of motion and pain | postoperative 12th month |
| Measure | Description | Time Frame |
|---|---|---|
| complications | skin necrosis, loss of range of motion, infection, nail bed injury | postoperative 1st day |
| complications | skin necrosis, loss of range of motion, infection, nail bed injury |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Malik Kısmet, MD | Contact | 00905063436401 | malikkismett@gmail.com | |
| Yener Yoğun, MD | Contact | 00905364310071 | yeneryogunluk@gmail.com |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Ankara University Medical Faculty | Recruiting | Ankara | 06680 | Turkey (Türkiye) |
Collected data will be shared after reaching the minimum required number and performing the analysis
June 2024
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| pin orthosis- extension block pin | Procedure | this is the technique for mallet finger where only 1 pin is used for extension block and an orthosis is applied for the extension posture |
|
| postoperative 1st month |
| complications | skin necrosis, loss of range of motion, infection, nail bed injury | postoperative 3rd month |
| complications | skin necrosis, loss of range of motion, infection, nail bed injury | postoperative 6th month |
| complications | skin necrosis, loss of range of motion, infection, nail bed injury | postoperative 12th month |