Lateral Collateral Ligament Of Knee Research Articles

A Novel Fixation Method of the Graft to the Fibular Head in Knee Lateral Collateral Ligament Reconstruction: Technical Note.

The lateral collateral ligament (LCL) is the strongest lateral stabilizer of the knee. It provides support against varus stress and posterolateral rotation of the knee. Lateral collateral ligament injuries mostly occur together with anterior and/or posterior cruciate ligament injuries. While grades 1 and 2 injuries are treated conservatively since they are partial injuries, total ruptures, as in grade 3, require surgical treatment. In conventional LCL reconstruction methods, hamstring grafts are used, and bioscrews are used in bone-tendon fixation. Lateral collateral ligament reconstruction is usually performed as a component of multiple ligament surgery. Therefore, there is a need for a contralateral hamstring tendon or allograft. The present article aims to define a technique that does not require tendon grafts and bioscrews in fibular fixation.

Investigation of the existence of and a block technique for the inferior lateral genicular nerve: cadaveric study.

Among the four genicular nerves innervating the anterior aspect of the knee, the inferior lateral genicular nerve has been omitted as a target of blocking. Some authors have suggested that the inferior lateral genicular nerve of the knee might pass beneath the lateral collateral ligament of knee. The authors aimed to study the location of the inferior lateral genicular nerve and the spread of injectate during the inferior lateral genicular nerve block. In ten knees from fresh frozen cadavers, the authors performed on each an ultrasound-guided block of the inferior lateral genicular nerve of the knee just below the lateral collateral ligament. The needle was inserted below the lateral collateral ligament, and 2 mL of blue dye was injected. A week later, the cadavers were dissected, and the existence of the inferior lateral genicular nerve and the spread of dye around it was investigated. The proportion of inferior lateral genicular nerves branching from the common peroneal nerve was found in 8 of 10 (80.0%) cadavers. Of these eight cadavers with inferior lateral genicular nerve, five specimens (62.5%) were stained with blue dye. The common peroneal nerve was not infiltrated with dye in any specimens. When 2 mL of dye was inserted inferiorly to the lateral collateral ligament, the inferior lateral genicular nerve could be blocked in 62.5% of specimens. Because the common peroneal nerve was not involved in any specimen, motor weakness would be avoided with this method.

Symptomatic Calcification within the Lateral Collateral Ligament of Knee: A Case Report on Rare Abnormality

Introduction: Lateral collateral ligament calcification is a rare cause of knee pain. There are only a handful of case reports, and the findings are usually incidental and asymptomatic. The exact mechanism for calcific deposit remains unclear. We present a case of symptomatic calcification within the lateral collateral ligament treated by surgical enucleation. Case presentation: A 52-year-old active woman presented with complaints of pain over the lateral aspect of the left knee of 6 months’ duration. Her pain was severe, aggravated on descending stairs but relieved on rest. Clinical examination revealed tenderness over the lateral aspect of the knee joint. Standard standing anterior-posterior radiograph of the left knee revealed a homogenous dense opacity adjacent to the lateral femoral condyle. Conclusion: Calcification within the lateral collateral ligament is rare and treatment is determined by whether the patient is symptomatic or not. If symptoms of the patient cannot be alleviated with a conservative approach, we recommend a surgical enucleation of the calcification, which in our case had good results. Keywords: Calcification, Knee pain, Lateral collateral ligament

Arthroscopic Excision of Calcification in Lateral Collateral Ligament of Knee with Direct Lateral (Bengaluru Chandrashekar) Portal

Calcium apatite deposition disease (CADD) is a common entity characterized by deposition of calcium apatite crystals within and around connective tissues, usually in a periarticular location 1. Many different locations of CADD have been described amongst which, lateral collateral ligament (LCL) of the knee is a rare location 2. The first ever case of calcific deposits in the lateral collateral ligament of the knee was reported by Anderson et al 3 in 2003. A few isolated case reports of LCL calcification are published in the literature 4,5 but arthroscopic excision of calcific deposit in LCL has not been described yet in the literature. Here we are describing 2 cases of arthroscopic excision of calcific deposits in LCL of the knee by a new portal called ‘Direct lateral portal' for the knee.

Anatomical and radiological evaluation of less invasive stabilisation system (LISS) in correlation with knee lateral collateral ligament insertion

IntroductionThe Less Invasive Stabilisation System (LISS) is an angle-stable plate that enables treatment of distal femoral comminuted and periprosthetic fracture. As it is placed through a minimally-invasive lateral approach, lateral knee pain is a commonly described symptom after its application. This study investigates knee lateral collateral ligament (LCL) iatrogenic injury during LISS plate fixation. A cadaver study was performed and a retrospective radiological investigation with the analysis of its clinical application was conducted to evaluate possible knee LCL damage. MethodsThe cadaver study included 13 human lower extremities, treated with LISS. After application, lateral knee side was dissected, implants were removed and distances between the drill holes and LCL origin were measured. In the retrospective radiological evaluation, postoperative X-rays for patients treated with distal femoral LISS plate in the University Hospital Regensburg, Germany from January 2010 to December 2015 were examined. Following a protocol described by Pietrini et al., the LCL origin on postoperative X-rays was calculated, both in lateral and anterior-posterior (AP) view, and distances between the plate and its closest locking screw to the LCL origin were measured. ResultsIn the cadaver study, the mean distance between the closest drilling hole and the ligament origin was 14.0mm (range 9–21mm; SD 3.8mm). Twenty-two patients matched the inclusion criteria for the retrospective radiological study. In lateral view, the mean distance between the origin and the closest locking screw was 6.3mm (range 0–16.4mm; SD 4.7mm); the mean distance between the origin and the plate was 3.1mm (range 0–13.9mm; SD 4.1mm). In AP view, the mean distance between LCL origin and the nearest screw was 2.4mm (range 0–7.6mm; SD 2.4mm). The mean distance between the origin and the most distal locking screw was 9.2mm (range 0–17.5mm; SD 4.0mm). DiscussionThe LISS is a safe option to treat distal femoral fractures in respect to the LCL. Due to close proximity, the LCL might be harmed; therefore, lateral knee pain or lateral instability after implantation should be assessed in further treatment.

Evaluation of the Knee Lateral Collateral Ligament Stability by Using the Digital Telometer

Abstract The purpose of the study was to evaluation of the knee lateral collateral ligament (LCL) stability of normal males and females in twenties by using digital telometer. The volunteer subjects agreed the research goal and were 31 normal adults(16 male: 21.1±1.5 years, 15 female: 21.2±1.2 years) who have not got any illness regarding their knee. X-ray images were taken varus stress on medial femorotibial joint space using by digital telometer, and grade of pain was surveyed. We measured the joint space width (JSW) in the digital radiology. As a result, the JSW of male group were 5.60±0.76 mm and JSW of female group were 5.05±0.55 mm (p=0.022) on the neutral state of the knee. Based on the result of varus stress on the knee, female group showed much widen than male group but it was not significant difference (p>0.05). When increased varus stress on the knee, all groups were felt pain from 17 daN to 19 daN. The result could be valuable when the varus stress on the LCL by using the digital telometer.

Mapping Lubricin in Canine Musculoskeletal Tissues

Lubricin, also known as superficial zone protein or PRG4, has many distinct biological functions, including lubrication, antiadhesion, and as a regulator of cell growth. This study investigated lubricin in canine musculoskeletal tissues using RT-PCR and immunohistochemistry. One or more variants were noted in canine flexor digitorum profundus (FDP) tendon, Achilles tendon, patellar tendon, A2 pulley, anterior cruciate ligament (ACL), knee lateral collateral ligament (LCL), articular cartilage, meniscus, muscle, and skin. We found 6 N-terminal lubricin splicing variants. The variants with larger sizes were identified in FDP tendon, ACL, LCL, A2 pulley, and cartilage. Lubricin was distributed both on the tissue surfaces and at the interface of fiber bundles within tissues, but this distribution varied by tissue type. We conclude that lubricin is present in many tissues; variations in splicing and physical distribution suggest that the variants of lubricin may play different roles in different locations.

A histological study of the innervation of the human lateral collateral ligament

The purpose of the study was to identify mechanoreceptors in the lateral collateral ligament of the human knee. Ten ligaments from ten fresh cadavers were studied by light microscopy. In addition to free nerve endings, two types of mechanoreceptors were identified. They were located at the femoral and fibular attachments and on the surface of the ligament. These findings support the theory that the lateral collateral ligament of the knee has an anatomic basis for a discriminating afferent flow towards the central nervous system. The neural network of the lateral collateral ligament of the knee may play a role in regulating the contraction of muscle groups that are fundamental to knee stability.