Editor's pick of the month (Prof Stefano Zaffagnini, Journal of Experimental Orthopaedics)

REVIEW PAPER
Anterolateral augmentation procedures during anterior cruciate ligament reconstructions in skeletally immature patients: Scoping review of surgical techniques and outcomes

Martijn Dietvorst1 | Stéphanie Verhagen1 | Marieke C. van der Steen1,2 |
Florens Q. M. P. van Douveren1 | Rob P. A. Janssen1,3,4
1 Department of Orthopaedic Surgery & Trauma, Maxima Medical Centre, Eindhoven, The Netherlands
2 Department of Orthopaedic Surgery & Trauma, Catharina Hospital Eindhoven, Eindhoven, The Netherlands
3 Orthopaedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
4 Chair Value!Based Health Care, Department of Paramedical Sciences, Fontys University of Applied Sciences, Eindhoven, The Netherlands

Abstract
Purpose: Graft failure rates after anterior cruciate ligament reconstruction (ACLR) in children and adolescents are higher compared to adults. Anterolateral augmentation procedures have recently generated increased focus regarding their ability to reduce graft failure rates. Concerns in skeletally immatures are potential growth disturbances and overconstraint after anterolateral augmentation. The aim of this scoping review is to provide an overview of all current anterolateral augmentation procedures in skeletally immature patients and to discuss surgical techniques, clinical and biomechanical outcomes.
Methods: This scoping review was performed following the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta!Analysis) statement extension for scoping reviews. On 22 December 2022, an information specialist performed a systematic literature search in Cochrane, PubMed (Medline) and EMBASE databases. Inclusion criteria were anterolateral augmentation procedures, including lateral extra!articular tenodesis (LET) and anterolateral ligament reconstruction (ALLR), in combination with ACLR in skeletally immatures.
Results: Twenty studies were included after screening 1.485 abstracts. Seventeen studies describe LET techniques, four studies ALLR techniques and one study both techniques. Biomechanical data is scarce and shows con!icting results. Two studies compared ACLR with LET to ACLR in skeletally immatures with promising results in favour of the combined procedure. There were no differences in outcomes between LET and ALLR. Conclusions: Several LET and ALLR techniques have been described for skeletally immature patients and the "rst clinical data on LET and ALLR is available, which showed promising results. Further research is necessary to evaluate the risk of growth disturbances and overconstraint in skeletally immatures.