Clinical and Biomechanical Outcomes of Anterior Cruciate Ligament (ACL) Reconstruction Associated With Lateral Extra-articular Tenodesis (LET): a Short-term Prospective Arthrometric Study
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 发起方
- 入组人数
- 51
- 试验地点
- 2
- 主要终点
- KYRA accelerometer
研究概览
简要总结
The anterior cruciate ligament (ACL) is one of the main stabilizers of the knee joint, and its injury is among the most common soft tissue injuries of the knee. Several surgical reconstruction techniques are available, utilizing various tissues as a graft for the neo-ligament, including both autografts and allografts.
The "Over-the-top single-bundle technique with gracilis and semitendinosus tendons combined with lateral extra-articular tenodesis (LET)" was developed in 1998 by Prof. Marcacci and Prof. Zaffagnini, and it is still the preferred method for ACL reconstruction at the Second Clinic of the Rizzoli Orthopaedic Institute.
Cadaveric biomechanical studies have shown that combining LET with ACL reconstruction improves knee joint stability in both the anteroposterior and rotational planes. However, a recent in vivo study has challenged this hypothesis, showing that in patients undergoing surgery, the addition of LET enhances knee stability only in the anteroposterior direction and only for a limited period of six months. At twelve months postoperatively, joint laxity appeared similar to that of patients who did not undergo the additional procedure. Furthermore, the same study did not assess rotational instability using the pivot-shift test, an essential parameter as it is closely linked to knee stability and the patient's subjective perception of surgical success.
Despite the increasing use of LET in conjunction with ACL reconstruction, few studies have analyzed the short-term postoperative effects of lateral extra-articular tenodesis and its potential benefits during the early stages of rehabilitation and return to sport.
This study was conceived in response to this clinical question, with the goal of evaluating anteroposterior and rotational laxity in a group of patients who underwent ACL reconstruction combined with LET, in order to analyze clinical outcomes and, most importantly, any changes in stability during the early postoperative period.
The results aim to improve understanding of knee stability in the initial phase following surgery, providing valuable information for rehabilitation teams to optimize recovery protocols and more effectively guide return-to-sport decisions for patients undergoing both procedures.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 50 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patients undergoing isolated ACL reconstruction using gracilis and semitendinosus tendons with the over-the-top technique and LET.
- •Both male and female patients.
- •Patients who have given consent to participate in the study.
- •Age between 18 and 50 years at the time of surgery.
排除标准
- •Previous surgery on the same limb (meniscectomy, prior ACL reconstruction, displaced fractures).
- •Surgical technique different from Over-the-Top with LET using autologous gracilis and semitendinosus tendons.
- •Other concomitant ligament injuries requiring surgical treatment.
- •Patients undergoing additional procedures at the same time as ACL reconstruction and LET (e.g., concomitant osteotomy, meniscus transplant, cartilage procedure…).
- •Patients who did not provide informed consent.
结局指标
主要结局
KYRA accelerometer
时间窗: 12 months
KYRA is a non-invasive outpatient device that allows the assessment of dynamic laxity during the pivot shift phenomenon. The device enables highly precise quantification of the degree of laxity. The unit of measurement is millimeters per second squared.
次要结局
- Anterior Drawer Test(12 months)
- Physical Examination(12 months)
- KT-1000 Arthrometer(12 months)
- Lachman Test(12 months)
- Pivot Shift Test(12 months)
- Knee Injury and Osteoarthritis Outcome Score (KOOS)(12 months)
- Complications or Subsequent Interventions(12 months)
- Lysholm Knee Score(12 months)
- VAS (Visual Analog Scale)(12 months)
- Tegner Score(12 months)
研究者
Stefano Zaffagnini
Full Professor Medicine and Surgery, University of Bologna
Istituto Ortopedico Rizzoli