## 4 Discussion  
The primary objective of ACLR is to restore the patient's knee function after an ACL tear. To achieve this, two main surgical techniques are available, but with somewhat conflicting results reported in the scientific literature [1; 14; 15; 34], particularly regarding the ability to return to pre-injury performance and return to sports [35]. However, most of these studies were conducted within 12 months post-surgery [12; 36], a period during which the participants may still be adapting and undergoing physical therapy. Furthermore, during this period, patients may still experience symptoms of kinesiophobia, which can diminish their mobility and confidence in the operated limb [37]. Despite the gold standard for clinical motion capture being marker-based optical cameras, this study utilized a markerless motion capture system. This approach eliminated errors associated with poor marker placement or skin movement artifacts, while still ensuring a high level of reproducibility and accuracy. Additionally, this method is not significantly affected by the participant's clothing [38], promoting a more comfortable and natural range of motion. This study only identified significant differences in contact time with the ground between the case and control groups. This suggests that, regardless of the ACLR technique employed, patients require longer periods of ground contact. This extended contact time may be attributed to several factors, including adaptive mechanisms that necessitate more time to control movement or a decline in muscle function regarding myoelectric activa \begin{table}
\begin{tabular}{c c c} \hline \hline
**Parameter** & **Effect Size (\(g\))** & **Power (1-\(\beta\))** \\ \hline CTG & 0.10 & 0.06 \\ \hline Max Valgus & 0.60 & 0.34 \\ \hline Max Varus & 0.48 & 0.23 \\ \hline Flexion in Max Valgus & 0.65 & 0.38 \\ \hline Flexion in Max Varus & 0.15 & 0.07 \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Post hoc power analysis between HT and PT groups. tion and force production following surgery [39]. After an ACL injury and subsequent reconstruction, the disruption of mechanoreceptors within the ligament and associated structures can impair joint position sense and neuromuscular control, leading to compensatory strategies during dynamic tasks [40,41]. Quadriceps inhibition is also frequently reported post-ACLR and can contribute to prolonged stabilization phases during landing [42]. Additionally, altered pre-activation and co-contraction patterns, particularly between the quadriceps and hamstrings, have been observed and are associated with diminished dynamic knee stability [43]. These neuromuscular adaptations may prompt individuals to adopt more cautious landing strategies, as evidenced by increased contact times, in an effort to mitigate mechanical load and perceived instability. Consequently, these findings underline the importance of rehabilitation protocols that not only target muscle strength but also emphasize the restoration of proprioception, neuromuscular timing, and coordination to achieve more normalized dynamic movement patterns. Participants in the case group showed significantly greater body mass compared to the control group, which may be attributed to lower levels of physical activity. Although the TAS results indicated reduced physical activity levels after surgery with the PT autograft, this finding was not statistically significant. Nonetheless, this decrease could suggest a meaningful decline in athletic or daily performance, potentially due to differences in postoperative recovery trajectories, graft-specific rehabilitation challenges, or subjective factors such as anterior knee pain, which is more frequently reported in patients with PT autografts. It is important to note that such questionnaires are not exempt from limitations. For example, while participants may engage in the same types of activities post-surgery, their performance may be adversely affected, a nuance that this scale does not assess.