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Acute Iliotibial Band ACL Reconstruction at Time of Tibial Plateau Fracture Fixation: A Case Report

Case report
[https://doi.org/10.13107/jocr.2023.v13.i02.3558]
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Acute Iliotibial Band ACL Reconstruction at Time of Tibial Plateau Fracture Fixation: A Case Report

Learning Point of the Article :
Bicondylar tibial plateau fractures and associated ACL rupture can be treated simultaneously with open reduction internal fixation and iliotibial band ACL reconstruction under a single anesthetic event.
Case report | Volume 14 | Issue 02 | JOCR February 2023 | Page 60-64 | Timothy Westbrooks [1], David Zuelzer [1], Benjamin Wilson [1,2]. DOI: https://doi.org/10.13107/jocr.2023.v13.i02.3558
Authors: Timothy Westbrooks [1], David Zuelzer [1], Benjamin Wilson [1,2]
[1] Department of Orthopaedic Surgery and Sports Medicine, University of Kentucky, Lexington, Kentucky,
[2] Department of Orthopaedic Surgery , Shriners Hospital for Children, Lexington, Kentucky.
Address of Correspondence:
Dr. Benjamin Wilson, Department of Orthopaedic Surgery and Sports Medicine, University of Kentucky, Lexington, Kentucky. E-mail: wilso.ben@uky.edu
Article Received : 2022-11-13,
Article Accepted : 2022-12-07

Introduction: Tibial plateau fractures are frequently associated with associated soft-tissue injuries. Typical treatment algorithms prioritize bony stabilization followed by delayed soft-tissue reconstruction. However, when the soft-tissue injury needs urgent intervention to optimize patient outcome, early soft-tissue reconstruction may be indicated.

Case Report: This case report features a high-energy tibia plateau fracture-dislocation with associated anterior cruciate ligament (ACL) and bucket-handle lateral meniscus tear sustained after a fall. The treatment of both bony and soft-tissue injury took place during a single anesthetic event by utilizing a novel application of a previously described technique for ACL reconstruction with iliotibial band (ITB) autograft.

Conclusion: The ITB ACL reconstruction technique can be used in adults with concomitant ACL rupture and tibial plateau fracture. This allows patients to undergo a single anesthetic event for treatment of both bony and soft-tissue injuries.

Keywords: Tibial plateau, anterior cruciate ligament reconstruction, iliotibial band anterior cruciate ligament reconstruction, bucket-handle meniscal tear.

Introduction:

Tibial plateau fractures are often associated with soft-tissue injuries about the knee including meniscal tears, ligament ruptures, and chondral injuries [­1]. Typical treatment algorithms prioritize fracture fixation followed by delayed soft-tissue reconstruction after the bony healing [2]. However, on occasion, the intra-articular soft-tissue injury necessitates acute intervention. In the case of a bucket-handle tear of the meniscus in association with an anterior cruciate ligament (ACL) tear, the surgeon is left with a conundrum. The displaced meniscus tear cannot be left until the second stage without risk of irreparable damage to the meniscal tissue, which would degrade the long-term outcome of the knee joint. However, reducing and repairing the meniscus, while leaving the ACL disrupted, runs the risk of repeated pivoting injuries, potentially injuring the meniscus further [3]. Ideally, the surgeon could perform meniscal repair in the same setting of ligament reconstruction; however, in a combined injury with tibial plateau fracture, screw traffic within the tibia prevents tunnel drilling which is needed for traditional ACL reconstruction. In this case report, we describe a novel method for combined tibial plateau fixation with concomitant meniscal repair and ACL reconstruction utilizing intra- and extra-articular reconstruction with the iliotibial band, without the need for bone tunnels.

Case Report:

A healthy active 25-year-old female presented to our level one trauma center after a fall from height while rock climbing, sustaining a bicondylar tibial plateau fracture-dislocation (Fig. 1). She was neurovascularly intact and after provisional closed reduction was taken to the operating room for provisional external fixation. Computed tomography and magnetic resonance imaging (MRI) were obtained for definitive surgical planning (Fig. 2 and 3). This AO/OTA 41-C3 tibial plateau fracture was consistent with a Schatzker VI and Moore Type five pattern [4]. Twelve days after initial external fixation, her fracture was treated with dual plate fixation through two surgical exposures – an anterolateral exposure and a posteromedial exposure. The anterolateral exposure is a “lazy S” centered at Gerdy’s tubercle, incising the iliotibial band (ITB), and anterior compartment fascia in-line with the skin incision. The posteromedial exposure uses a skin incision 1–2 cm posterior to the posteromedial edge of the tibia. The medial aspect of the proximal tibia was exposed in windows mobilized around the pes anserine tendons. Through the anterolateral incision and a submeniscal arthrotomy the lateral articular surface and meniscus were scrutinized. Intraoperative fracture reduction was assessed with direct visualization and biplanar fluoroscopic imaging. After anatomic reduction was obtained, implants were placed posteromedial, medially, and laterally to function as buttresses (Fig. 4). After bony fixation, we turned our attention to the soft-tissue reconstruction. We harvested the ITB to be used for ACL reconstruction by proximally extending the anterolateral incision. The anterior and posterior borders were identified and incised longitudinally in line with the fibers leaving 2–3 mm of intact ITB on anterior and posterior sides. An angled meniscotome (Fig. 5) was used to extend the incisions proximally 15 cm from the joint, and a long handled curved meniscal knife used to transect the ITB proximally, leaving the distal insertion intact at Gerdy’s tubercle. The graft was then tubularized using a #2 braided non-absorbable whip stitch. A diagnostic knee arthroscopy was performed after establishing anteromedial and anterolateral arthroscopy portals. After confirmation of her ACL tear and meniscal tear with no further intra-articular pathology, we reduced and repaired the patient’s bucket-handle lateral meniscal tear with all-inside meniscal repair devices in vertical mattress fashion. A large, curved Kelly clamp, was then placed through the anteromedial portal around the over-the-top position of the lateral femoral condyle. A passing suture was used to pull the ITB through the posterolateral capsule and into the notch. A separate 4 cm anteromedial tibial incision was created, and a clamp was then inserted through this incision, entering the joint under the intrameniscal ligament. A shaver was used to create a bony trough in the anterior tibia to create a bony bed for healing and to push the tibial insertion more posterior to a more anatomic position. Sutures from the ITB graft were grasped with a clamp and brought down through the anteromedial incision. Femoral graft fixation with accomplished with the knee at 90° flexion and neutral rotation with #2 non-absorbable sutures placed in the posterolateral periosteum. The graft was cycled and final tensioning was performed with the knee in 30° of flexion. Suture anchors were placed in the anterior tibial cortex through the anteromedial tibial incision. The graft was then fixed to these suture anchors with a tension slide technique for onlay fixation on the anterior tibia. She was initially treated with physical therapy, but her range of motion plateaued at 0–90° by 3 months postoperatively. At that time, she elected to undergo arthroscopic lysis of adhesions and manipulation under anesthesia. Diagnostic arthroscopy at the time of the procedure showed an intact lateral meniscus repair and ACL graft with no signs of the early post-traumatic arthritic changes. After manipulation, we were able to obtain a range of motion of 0–130°. Postoperatively, she continued to attend regular physical therapy sessions working on knee range of motion, quadriceps strengthening, and gait training. At 1-year post-operative, she had returned to all activities including high intensity rock climbing. She had painless knee range of motion from 0° to 140° without any subjective or objective signs of instability.

Discussion:

High-energy tibial plateau fractures are associated with concomitant intra-articular soft-tissue pathology. Gardner et al. prospectively reviewed 103 patients with acute, operatively treated tibial plateau fractures, and found a 77% incidence of collateral or cruciate ligament disruption, a 91% incidence of lateral meniscus injury, a 44% incidence of medial meniscus injury, and a 68% incidence of posterolateral corner injury [5]. Wang et al. reviewed 54 acute tibial plateau fractures with pre-operative MRI and found Schatzker IV and V fractures to have a higher likelihood of having a soft-tissue injury in association with their bony injury [6]. The patient in our case report sustained a bicondylar tibial plateau fracture that required multiple buttress plates for bony fixation, thus preventing the use of typical bone tunnels for ligament reconstruction. Given the limited uninvolved bone present in the proximal tibia after tibial plateau fixation, treating the ACL injury with standard reconstruction techniques was not possible. For this reason, an ITB autograft reconstruction was performed. ACL treatment in pediatric patients requires recognition of the distal femoral and proximal tibial physes and the potential implications that ACL reconstruction can have on the child’s growth. There are both “physeal sparing” and “physeal respecting” ACL reconstruction techniques that allow the orthopedic surgeon to reconstruct an ACL without compromising physeal function [7], one of which, the intra-articular extraphyseal reconstruction with ITB, avoids the use of bone tunnels entirely. This technique was first developed by Micheli et al. at Boston Children’s Hospital as a modification of a historical lateral extra-articular tenodesis, with application to the skeletally immature child [8,9]. The ITB ACLR technique has undergone multiple clinical and biomechanical reviews documenting its efficacy [10]. It is important to note that, in this case, we modified the original description of the procedure by Kocher et al. [10,11]. To our knowledge, this is the first description of its use in the adult trauma population. Also, we modified the way in which the graft was fixed to the tibia. For pediatric patients, the tibial side of the graft is sutured into the periosteum that is typically present in younger children. In the adult patient, the periosteum is not as robust, and in the case of high-energy trauma and significant soft-tissue injury, the surgeon cannot count on the strength of the periosteum alone. In this case, we utilized suture anchors placed in the anteromedial tibia to fix our ACL graft. The primary downside to performing acute ACL reconstruction is arthrofibrosis, a complication that occurs in 4–38% of ACL reconstructions [12]. Typically, ACL reconstruction is delayed until full range of motion is obtained. In the setting of a bucket-handle meniscal tear, soft-tissue surgery becomes more urgent to prevent long-term degenerative changes to the articular cartilage [12]. Acute repair of the patient’s meniscal pathology was indicated in this clinical setting, and performing an ACL reconstruction acutely helps provide additional stability to the knee to protect the meniscal repair. Korpershoek et al. performed a systematic review demonstrating level two evidence that ACL reconstruction at the same time as meniscal repair was protective compared to delayed ACL reconstruction [13]. In a retrospective cohort study, Wasserstein et al. reviewed meniscal repairs with and without ACL reconstruction. About 9.7% in the combined cohort underwent meniscal reoperation, while 16.7% in the meniscal repair alone group required reoperation [14]. Although she did develop arthrofibrosis requiring a return to the operating room, performing the ITB ACLR acutely protected her meniscal repair, which was found to be intact at the time of her second operation. The consequence of arthrofibrosis was treated successfully with lysis of adhesions, manipulation under anesthesia, and therapy.

Conclusion:

To the best of our knowledge, this is the first case report of the ITB ACLR being used in an adult trauma patient. The ITB ACLR technique can be used in the setting of ACL rupture in association with high-energy tibial plateau fracture. This technique allows the orthopedic surgeon to reconstruct the ACL with limited proximal tibial bone stock available.

Clinical Message:

Acute ITB ACLR can be used at the same time as tibial plateau fracture fixation. This is particularly useful when the patient has an urgent soft-tissue problem, such as a bucket-handle meniscal tear.

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How to Cite This Article: Westbrooks T, Zuelzer D, Wilson B. Acute Iliotibial Band ACL Reconstruction at Time of Tibial Plateau Fracture Fixation: A Case Report. Journal of Orthopaedic Case Reports 2023 February, 14(02): 60-64.
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