Posterior Knee Endoscopy

Lui, Tun Hing; Góralczyk, Adrian; Malinowski, Konrad; Rasulić, Lukas; Lepić, Milan; Yang, Rui; Long, Yi

doi:10.1007/978-981-16-3488-8_12

Cited by 2 publications

(1 citation statement)

References 49 publications

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“…1 ). It was first described in the Book of Endoscopy of the Hip and Knee [ 1 ]. The LARAI portal can be established by placing the patient in the “figure of four” position with the knee flexed at a 90° angle.…”

Section: Introductionmentioning

confidence: 99%

LARAI portal provides a safe method for lateral meniscus repair: three-dimensional computed tomography and cadaveric assessment

Long,

Zhang,

Zhou

et al. 2023

J Orthop Traumatol

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Background Lateral, All-Round and All-Inside (LARAI) portal is a viewing or working portal for observing and repairing the lesions of the lateral meniscus. However, there are safety concerns about popliteal artery (PA) injuries during the procedure. This study aimed to assess the safe distance between the trajectory of the LARAI portal and PA. Materials and methods Both three-dimensional computed tomography (3D-CT) and cadavers were used to simulate the LARAI portal trajectory. In the 3D-CT study, between January 2020 and September 2020, 45 participants who underwent computed tomography angiography were included in the study. The shortest distance from the PA to the simulated trajectory needle (PS) was measured using 3D-CT. Mean −3SD −2 was calculated to assess the safety of the LARAI portal trajectory. If this value was more than zero, the trajectory was considered “safe.” In the cadaveric study, lower limbs from seven fresh-frozen cadavers were used to establish the “safe” trajectories of the LARAI portal, and the PS was measured. Results In the 3D-CT study, the longest PS (P < 0.001) was found 20 mm lateral to the edge of the patellar tendon trajectory at 0 mm from the posterior cruciate ligament (PCL). Safe trajectories were also found 10 mm, 15 mm, and 20 mm lateral to the edge of the patellar tendon at 0 mm from the PCL, as well as the 20 mm lateral to the edge of the patellar tendon at 3 mm from the PCL. The cadaveric study showed that the average PS of all safe trajectories closely adjoined to PCL was greater than 14 mm. Conclusions The LARAI portal trajectory in the “figure of four” is safe, and the optimal insertion point is 10–20 mm lateral to the edge of the patellar tendon and closely adjoined to the posterolateral margin of the PCL at knee joint line level. Level of evidence Level IV.

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Section: Introductionmentioning

confidence: 99%

LARAI portal provides a safe method for lateral meniscus repair: three-dimensional computed tomography and cadaveric assessment

Long,

Zhang,

Zhou

et al. 2023

J Orthop Traumatol

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Arthroscopic cystectomy and valve excision of popliteal cysts complemented with management of intra-articular pathologies: a low recurrence rate and good functional outcomes in a series of ninety seven cases

Malinowski

Mostowy

Ebisz³

et al. 2023

International Orthopaedics (SICOT)

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Purpose Arthroscopy in popliteal cyst surgery enables addressing all components of its pathomechanism: the cyst wall, valvular mechanism, and concomitant intra-articular pathologies. Techniques differ as to the management of the cyst wall and the valvular mechanism. This study aimed to assess the recurrence rate and functional outcomes of a cyst wall and valve excising arthroscopic technique with concurrent intra-articular pathology management. The secondary purpose was to assess cyst and valve morphology and concomitant intra-articular findings. Methods Between 2006 and 2012, 118 patients with symptomatic popliteal cysts refractory to at least three months of guided physiotherapy were operated on by a single surgeon using a cyst wall and valve excising arthroscopic technique with intra-articular pathology management. Patients were evaluated preoperatively and at a mean follow-up of 39 months (range 12–71) by ultrasound, Rauschning and Lindgren, Lysholm, and VAS of perceived satisfaction scales. Results Ninety-seven out of 118 cases were available for follow-up. Recurrence was observed on ultrasound in 12/97 cases (12.4%); however, it was symptomatic only in 2/97 cases (2.1%). Mean scores improved: Rauschning and Lindgren from 2.2 to 0.4, Lysholm from 54 to 86, and VAS of perceived satisfaction from 5.0 to 9.0. No persistent complications occurred. Arthroscopy revealed simple cyst morphology in 72/97 (74.2%) and presence of a valvular mechanism in all cases. The most prevalent intra-articular pathologies were medial meniscus (48.5%) and chondral lesions (33.0%). There were significantly more recurrences in grade III–IV chondral lesions (p = 0.03). Conclusions Arthroscopic popliteal cyst treatment had a low recurrence rate and good functional outcomes. Severe chondral lesions increase the risk of cyst recurrence.

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Posterior Knee Endoscopy

Cited by 2 publications

References 49 publications

LARAI portal provides a safe method for lateral meniscus repair: three-dimensional computed tomography and cadaveric assessment

LARAI portal provides a safe method for lateral meniscus repair: three-dimensional computed tomography and cadaveric assessment

Arthroscopic cystectomy and valve excision of popliteal cysts complemented with management of intra-articular pathologies: a low recurrence rate and good functional outcomes in a series of ninety seven cases

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