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Related Concept Videos

Fractures: Bone Repair01:27

Fractures: Bone Repair

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Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
Minor fractures with no bone displacement are treated by immobilizing the fractured bone using a cast or splint. However, in the case of fractures with displaced bones, the broken bones are repositioned before immobilization to ensure successful healing without deformation and loss of function. The realignment of fractured bone ends is performed through a process called reduction. If the...
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Related Experiment Video

Updated: Dec 6, 2025

An Intramedullary Locking Nail for Standardized Fixation of Femur Osteotomies to Analyze Normal and Defective Bone Healing in Mice
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Does the IOFix implant improve union rates?

David Segal1,2, Nissim Ohana3,4, Meir Nyska3,4

  • 1Department of Orthopaedic Surgery, Meir Medical Center, 59 Tchernichovski st, Kfar Saba, Israel. dudisegal@gmail.com.

BMC Musculoskeletal Disorders
|October 7, 2020
PubMed
Summary

First metatarsophalangeal joint fusion using the IOFix device shows promising union rates (93.33%) for hallux rigidus. This study suggests IOFix is a viable option for MTPJ1 arthrodesis, comparable to other fixation methods.

Keywords:
FusionHallux rigidusIOFixUnion

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Area of Science:

  • Orthopedic surgery
  • Podiatric surgery
  • Surgical innovation

Background:

  • First metatarsophalangeal joint (MTPJ1) fusion is the standard for severe hallux rigidus.
  • Limited data exists on the union and re-operation rates for IOFix (Intra-osseous fixation device) in hallux rigidus fusion.
  • This study reviews outcomes using the IOFix implant for MTPJ1 arthrodesis.

Purpose of the Study:

  • To evaluate the efficacy of the IOFix implant in achieving fusion for hallux rigidus.
  • To assess the union rate and re-operation rate associated with IOFix.
  • To compare outcomes with existing fixation devices.

Main Methods:

  • Retrospective chart review approved by hospital IRB.
  • Inclusion criteria excluded specific conditions like charcot foot, rheumatoid arthritis, and recent trauma.
  • Data collected included demographics, AOFAS scores, and radiographic studies.

Main Results:

  • Thirty patients (60% female, mean age 60.36 years) were included.
  • A union rate of 93.33% was achieved in 28 patients.
  • Mean postoperative AOFAS score was 80.5; no hardware removal was requested due to prominence.

Conclusions:

  • This is the largest series evaluating the IOFix device for hallux rigidus.
  • Fusion and hardware removal rates appear comparable to other fixation devices.
  • IOFix demonstrates a promising fusion rate for MTPJ1 arthrodesis in hallux rigidus.