الفهرس 
Normal physis histologyOnly 14 pages are availabe for public view
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Abstract
BACKGROUND: ALTHOUGH MANY STUDIES REPORTED THE EFFICACY OF USING PERCUTANEOUS EPIPHSIODESIS USING TRANSPHYSEAL SCREWS (PETS) IN CORRECTION OF CORONAL PLANE KNEE DEFORMITIES, A LOT OF THEM REFRAINED from USING THIS TECHNIQUE BECAUSE OF LACK OF OBJECTIVE EVIDENCE OF ITS REVERSIBILITY.
METHODS: TWENTY-THREE PATIENT AGED from 8 YEARS TO 13 YEARS OLD (40 LOWER LIMBS) WITH CORONAL PLANE KNEE DEFORMITY WERE ENROLLED INTO THIS PROSPECTIVE CASE SERIES from SEPTEMBER 2019 TO JUNE 2023. RATE OF CORRECTION OF MECHANICAL AXIS DEVIATION MAD, MECHANICAL LATERAL DISTAL FEMORAL ANGLE MLDFA AND MEDIAL PROXIMAL TIBIAL ANGLE MPTA WERE MEASURED TO PROVE PETS EFFICACY. LOWER LIMB LENGTH, MLDFA, MPTA WERE RECORDED PREOPERATIVELY AND 6 MONTHS AFTER SCREW REMOVAL FOR 22 PHYSES IN ADDITION TO CT SCAN OF 36 PHYSIS TO INVESTIGATE PHYSIS BEHAVIOR AND REVERSIBILITY OF THE TECHNIQUE.
RESULTS: THE MEAN MAD CORRECTION RATE WAS 3.3 MM/MONTH AND 1.78 MM/MONTH FOR GENU VALGUM AND GENU VARUM PATIENTS RESPECTIVELY. MLDFA MEAN CORRECTION RATE WAS 1.07 DEGREE/MONTH FOR GENU VALGUM PATIENTS WHILE MPTA MEAN CORRECTION RATE WAS 0.81 DEGREE/MONTH FOR GENU VARUM PATIENT. NO PHYSEAL BONY BARS COULD BE DETECTED 6 MONTHS AFTER SCREW REMOVAL FOR ALL PATIENTS. CONCERNING THE PLAIN STANDING X-RAY FOR THE 22 PHYSES, ONLY ONE PHYSIS SHOWED OVER CORRECTION WHILE ANOTHER PHYSES SHOWED REBOUND MORE THAN 3 DEGREES. IN ADDITION 13 PHYSES SHOWED NORMAL GROWTH RESUMPTION WHILE 3 PHYSIS SHOWED SAME LOWER LIMB LENGTH.
CONCLUSION: PETS IS A HIGHLY EFFECTIVE METHOD OF HEMIEPIPHYSIODESIS WITH RATE OF CORRECTION FASTER THAN THE OTHER METHODS OF EPIPHYSIODESIS. MOREOVER, IT IS RELIABLE, REPRODUCIBLE, EASY, CHEAP, MORE COSMETIC, SAFE AND COMPLETELY REVERSIBLE WHEN USED IN JUVENILE AND EARLY ADOLESCENT PEDIATRIC POPULATION