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Table 4 Summary of the results, including advantages and disadvantages of the needle arthroscope

From: Comparison of needle and conventional arthroscopy for visualisation of predefined anatomical structures of the knee joint: a feasibility study in human cadavers and patients

Advantages

Good Visibility

The study shows that needle arthroscopy provides good visibility of anatomical landmarks in the knee joint, comparable to conventional arthroscopy in most cases

Minimally Invasive

Needle arthroscopy offers a minimally invasive approach, which can be beneficial for diagnostic and limited therapeutic indications, reducing the need for skin sutures

Compact and Transportable

Needle arthroscopes are compact and transportable imaging systems, making them potentially suitable for outpatient settings

Technological Advancements

The use of chip-on-tip image sensor technology in needle arthroscopy represents a technological advancement, offering better image quality and ergonomic advantages compared to older fiberoptic systems

Disadvantages

 Limited Field of View

Needle arthroscopy with 0° optics has a limited field of view compared to conventional arthroscopy with 30° optics. This limitation can affect the visualization of certain anatomical structures, particularly in the retropatellar region

 Mechanical Problems

The study reports instances of mechanical problems with needle arthroscopy, such as trocar deformation and slippage, especially in cases with pronounced scarring or constricted anatomical structures

 Material Thickness

The material thickness of the needle arthroscope may limit its use for certain procedures, particularly those involving mechanical stress, such as meniscus resection or cartilage therapy

 Small Study Size

The study acknowledges a small number of cases, which may limit the generalizability of the findings

 Exclusion Criteria

The exclusion criteria in the study, including the presence of hemarthrosis, inflammatory changes, and knee joint empyema, could affect the applicability of needle arthroscopy in real clinical scenarios