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Percutaneous hemiepiphysiodesis using transphyseal screws for adolescent tibia vara
Susana R Braga1, Miguel Akkari1, Gilberto Waisberg1
1Departamento de Ortopedia e Traumatologia da Santa Casa de Misericórdia de São Paulo, São Paulo.
Journal of Pediatric Orthopedics. Part B
|October 22, 2021
Summary
Percutaneous transphyseal screw (PETS) hemiepiphysiodesis is effective for adolescent tibia vara (ATV). This technique offers good outcomes, tolerability, and can stabilize deformities until skeletal maturity.
Area of Science:
- Orthopedic surgery
- Pediatric orthopedics
- Skeletal deformities
Background:
- Hemiepiphysiodesis is a primary procedure for adolescent knee deformities.
- Published results for adolescent tibia vara (ATV) using this method are variable.
Purpose of the Study:
- To review the experience with percutaneous transphyseal screw (PETS) for treating adolescent tibia vara.
- Evaluate outcomes until skeletal maturity.
Main Methods:
- Retrospective analysis of 13 patients (20 knees) undergoing lateral tibial hemiepiphysiodesis with PETS.
- Radiographic and clinical evaluation before surgery, at implant removal, and final follow-up.
Main Results:
- Excellent outcomes in 60% of knees, good in 30%, and poor in 10%.
- No bone bars or implant breakage observed.
- One overcorrection and two cases of rebound noted after screw removal.
Conclusions:
- PETS hemiepiphysiodesis is well-tolerated and effective for adolescent tibia vara.
- Considered a viable option to stabilize deformities and postpone osteotomies.

