The ankle puncture model operation guide is mainly used to guide learners to master the basic skills of extracting ankle effusion or pathological exudate. Before operation, it is necessary to check whether the appearance of the model and the structure of the joint cavity are intact, and prepare a sterile puncture kit and a simulated needle.

Functional features

This model is a part of the right lower limb of an adult, including the complete foot and ankle joints. The joints can move appropriately to facilitate puncture

2: Precise anatomical structure: It includes nerves, blood vessels and tendons.

3: Realistically simulate the puncture sensation of skin, muscle, blood vessels and nerve tissues to achieve the practice skill of soft tissue injection into the metatarsophalangeal joint, Morton's neuroma, tarsal canal, metatarsal fascia, tarsal sinus, bursa of the heel and ankle joint (tibiotalar joint).

4: If the puncture is correct, the corresponding light will light up on the control box connected to the model.

5: The model simulates real skin, is soft and elastic, and can be replaced.

First, familiarize the trainees with the anatomical landmarks of the ankle joint, such as the positions of the medial and lateral malleolus, the anterior border of the tibia and the talus, and clarify the commonly used puncture approaches. The common puncture points are mostly chosen in front of the ankle joint, at the joint space between the two ankles. During the operation, the aseptic principle must be strictly followed. The puncture site should be routinely disinfected and a drape should be laid. The needle should be slowly inserted at an Angle of approximately 60° to 90° with the skin. Once it feels like it has entered the joint cavity, simulated aspiration can be performed.

The models mostly adopt the design of simulated joint cavities and replaceable joint fluid capsules, which can be repeatedly operated to help trainees experience the changes in needle insertion resistance and the process of fluid reflux. After the operation is completed, the needle should be removed in time and local pressure fixation should be applied. After use, the model should be cleaned and maintained to ensure the sealing of the joint cavity and the recovery of pinholes. This model has significant training and assessment value in orthopedics, emergency medicine and rehabilitation teaching.