Sorwad Jacob, Nielsen Torsten Grønbech, Sørensen Ole Gade, Konradsen Lars, Lind Martin
Department of Sports Traumatology Aarhus University Hospital Aarhus N Denmark.
Section of Sports Traumatology, Bispebjerg and Frederiksberg University Hospital Copenhagen Denmark.
J Exp Orthop. 2025 Aug 29;12(3):e70377. doi: 10.1002/jeo2.70377. eCollection 2025 Jul.
To investigate the impact of posterior tibial slope (PTS) on postoperative outcome in an anterior cruciate ligament (ACL) revision cohort, based on sagittal knee stability and subjective, patient-reported knee function.
Lateral knee radiographs from 105 ACL revision patients (mean age 27.2 ± 6.5 years) were retrospectively reviewed and both medial and lateral posterior tibial slope was measured. Objective sagittal knee stability was based on Rolimeter measurements. The subjective knee function was obtained through the Knee Numeric-Entity Evaluation Score (KNEES-ACL), the Knee Injury and Osteoarthritis Outcome Score (KOOS) and Tegner Activity Scale (TAS) questionnaires. Objective anterior-posterior (AP) knee laxity was examined prior to ACL revision surgery and at a one-year follow-up, and the patient reported outcome measures (PROMs) were obtained prior to ACL revision surgery and after a two-year follow-up period.
No correlation was found between medial PTS and knee stability before (0.16; 95% confidence interval [CI], -0.06 to 0.36, = 0.15) or one year after ACL revision surgery (0.07; 95% CI, -0.14 to 0.27, = 0.54). Likewise, no correlation was found between lateral PTS and knee stability before (0.30; 95% CI, 0.09-0.48, = 0.01) and one year after ACL revision surgery (0.15; 95% CI, -0.06 to 0.35, = 0.16). Likewise, there was no correlation between medial and lateral PTS and KOOS, KNEES-ACL and TAS. The mean lateral PTS was 2.6° steeper than the medial PTS ( < 0.05).
In the present study, PTS was not found to be associated with either sagittal knee stability or subjective knee function in ACL revision patients. Patients undergoing ACL revision surgery have a large mean difference between the medial and the lateral PTS.
Level IV.
基于膝关节矢状面稳定性以及患者报告的主观膝关节功能，探讨胫骨后倾坡度（PTS）对前交叉韧带（ACL）翻修术后结果的影响。
回顾性分析105例ACL翻修患者（平均年龄27.2±6.5岁）的膝关节侧位X线片，测量胫骨内侧和外侧后倾坡度。客观的膝关节矢状面稳定性基于Rolimeter测量。主观膝关节功能通过膝关节数字实体评估评分（KNEES-ACL）、膝关节损伤和骨关节炎疗效评分（KOOS）以及特格纳活动量表（TAS）问卷获得。在ACL翻修手术前及术后1年检查客观的膝关节前后向（AP）松弛度，并在ACL翻修手术前及术后2年随访期获取患者报告的疗效指标（PROMs）。
未发现内侧PTS与ACL翻修手术前（0.16；95%置信区间[CI]，-0.06至0.36，P = 0.15）或术后1年膝关节稳定性之间存在相关性（0.07；95%CI，-0.14至0.27，P = 0.54）。同样，未发现外侧PTS与ACL翻修手术前（0.30；95%CI，0.09 - 0.48，P = 0.01）及术后1年膝关节稳定性之间存在相关性（0.15；95%CI，-0.06至0.35，P = 0.16）。同样，内侧和外侧PTS与KOOS、KNEES-ACL和TAS之间也不存在相关性。外侧PTS平均比内侧PTS陡2.6°（P < 0.05）。
在本研究中，未发现PTS与ACL翻修患者的膝关节矢状面稳定性或主观膝关节功能相关。接受ACL翻修手术的患者内侧和外侧PTS之间存在较大的平均差异。
IV级。
