TY - JOUR
T1 - Morphology of the knee after guided growth using tension-band devices
T2 - a retrospective multicenter study of 222 limbs and 285 implants
AU - Hvidberg, Emma
AU - Antfang, Carina
AU - Gosheger, Georg
AU - Vogt, Bjoern
AU - Abood, Ahmed
AU - Møller-San Pedro, Alexander
AU - Frommer, Adrien
AU - Weyer-Elberich, Veronika
AU - Møller-Madsen, Maria Kirstine
AU - Roedl, Robert
AU - Møller-Madsen, Bjarne
AU - Rölfing, Jan Duedal
PY - 2023/12/27
Y1 - 2023/12/27
N2 - Background and purpose — Temporary hemiepiphys-iodesis by tension-band devices is commonly applied to correct angular limb deformities in children. We aimed to evaluate knee joint morphology after guided growth using these devices. Patients and methods — In a retrospective multicenter study we analyzed standardized anteroposterior long-leg radiographs of 222 limbs (285 implants) of patients treated by temporary hemiepiphysiodesis with either eight-Plates or FlexTacks for coronal angular deformities of the knee joint between 2013 and 2019. Femoral floor angle (FFA), femoral notch–intercondylar distance (FNID), and tibial roof angle (TRA) were measured pre-and postoperatively to assess the central knee joint morphology. Statistical exploratory analy-ses were performed using linear mixed models, t-tests, Wil-coxon signed-rank test, and Mann–Whitney U test. Results — 217 FlexTacks (femur 106, tibia 111) in 104 children and 68 eight-Plates (femur 61, tibia 7) in 35 children were identified. Median time period under growth guid-ance was 11 months (range 4–42). No statistically significant change in the FFA was detected (eight-Plate: P = 0.2; FlexTack: P = 0.3). A statistically significant difference of the FNID was found in the eight-Plate group (P = 0.02), but not in the FlexTack group (P = 0.3). While TRA increased in both groups, a statistical significance was observed only in the FlexTack group (P < 0.01). Conclusion — We found minor but clinically irrelevant changes in knee morphology after the treatment.
AB - Background and purpose — Temporary hemiepiphys-iodesis by tension-band devices is commonly applied to correct angular limb deformities in children. We aimed to evaluate knee joint morphology after guided growth using these devices. Patients and methods — In a retrospective multicenter study we analyzed standardized anteroposterior long-leg radiographs of 222 limbs (285 implants) of patients treated by temporary hemiepiphysiodesis with either eight-Plates or FlexTacks for coronal angular deformities of the knee joint between 2013 and 2019. Femoral floor angle (FFA), femoral notch–intercondylar distance (FNID), and tibial roof angle (TRA) were measured pre-and postoperatively to assess the central knee joint morphology. Statistical exploratory analy-ses were performed using linear mixed models, t-tests, Wil-coxon signed-rank test, and Mann–Whitney U test. Results — 217 FlexTacks (femur 106, tibia 111) in 104 children and 68 eight-Plates (femur 61, tibia 7) in 35 children were identified. Median time period under growth guid-ance was 11 months (range 4–42). No statistically significant change in the FFA was detected (eight-Plate: P = 0.2; FlexTack: P = 0.3). A statistically significant difference of the FNID was found in the eight-Plate group (P = 0.02), but not in the FlexTack group (P = 0.3). While TRA increased in both groups, a statistical significance was observed only in the FlexTack group (P < 0.01). Conclusion — We found minor but clinically irrelevant changes in knee morphology after the treatment.
KW - Bone Plates
KW - Bone Screws
KW - Child
KW - Femur/diagnostic imaging
KW - Humans
KW - Knee Joint/diagnostic imaging
KW - Lower Extremity
KW - Retrospective Studies
KW - Tibia/diagnostic imaging
KW - Guided growth
KW - Tension band
KW - Anatomy
KW - Paediatric orthopaedics
UR - https://www.scopus.com/pages/publications/85181212401
U2 - 10.2340/17453674.2023.34902
DO - 10.2340/17453674.2023.34902
M3 - Journal article
C2 - 38153250
SN - 1745-3674
VL - 94
SP - 609
EP - 615
JO - Acta Orthopaedica
JF - Acta Orthopaedica
ER -