Functional leg performance 2 years after ACL surgery: a comparison between InternalBrace™-augmented repair versus reconstruction versus healthy controls

Journal of Orthopaedics and Traumatology

Official Journal of the Italian Society of Orthopaedics and Traumatology

Table 6 Number (percentage) of patients after ACL-IB, patients after ACL-R, and control subjects reaching an LSI ≥ 90% and ≥ 90% of the average performance of the non-dominant leg of controls^aWith the involved (patients) or non-dominant (controls) leg

Parameter	ACL-IB	ACL-R	Controls	P-value*
Parameter	ACL-IB	ACL-R	Controls	All groups	ACL-IB versus controls	ACL-R versus controls	ACL-IB versus ACL-R
Single-leg hops
SLH distance	11/29 (38%)	8/27 (30%)	22/29 (76%)	< 0.001	0.004	0.001	0.5804
SH	6/29 (21%)	9/27 (33%)	13/29 (45%)	0.148
Proprioception
Joint position sense
Error 60° flexion	14/29 (48%)	12/27 (44%)	15/29 (52%)	0.862
Error 30° flexion	15/29 (52%)	13/27 (48%)	11/29 (38%)	0.551
Dynamic postural control
Y Balance test
Anterior	18/29 (62%)	15/27 (56%)	24/29 (83%)	0.075
Posteromedial	24/29 (83%)	23/27 (85%)	25/29 (86%)	0.932
Posterolateral	24/29 (83%)	23/27 (85%)	23/29 (76%)	0.845
Composite score	23/29 (79%)	23/27 (85%)	24/29 (83%)	0.845

Number of participants reaching leg symmetry and additionally normal leg performance as percentage of the respective overall group size
ACL-IB anterior cruciate ligament repair and InternalBrace™ augmentation after proximal ruptures, ACL-R anterior cruciate ligament reconstruction, BH body height, LL leg length, SLH single-leg hop, SH side hop
*Chi-squared test between distribution of all three groups or the respective two groups as post hoc test (P < 0.05)
^aThresholds for 90% of the average performance of controls: SLH, ≥ 61.8% BH; SH, ≥ 19 hops; JPS 60° ≤ 3.5°, 30° ≤ 3.6°; Y Balance, ≥ 59.2% LL anterior, ≥ 94.0% LL posteromedial; ≥ 86.7% LL posterolateral, ≥ 80.0% LL composite score