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Elbow arthroscopy: a new setup to avoid visual paradox and improve triangulation.

ABSTRACT: Elbow arthroscopy is a useful diagnostic and therapeutic tool for various conditions. Conventional arthroscopy with the patient in the prone or lateral position where the screen is placed on the opposite side makes it difficult to interpret the image, results in visual paradox, and is associated with difficult triangulation. We present a modified setup for the operating room to help eliminate these problems and improve triangulation.

SUBMITTER: Sinha A

PROVIDER: S-EPMC3716023 | biostudies-literature | 2013 May

REPOSITORIES: biostudies-literature

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Elbow arthroscopy: a new setup to avoid visual paradox and improve triangulation.

Sinha Apurv A Pydah Satya Kanth V SK Webb Mark M

Arthroscopy techniques 20130301 2

Elbow arthroscopy is a useful diagnostic and therapeutic tool for various conditions. Conventional arthroscopy with the patient in the prone or lateral position where the screen is placed on the opposite side makes it difficult to interpret the image, results in visual paradox, and is associated with difficult triangulation. We present a modified setup for the operating room to help eliminate these problems and improve triangulation. ...[more]

PMID: 23875151

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Project description:Purpose:To prospectively evaluate the transferability of skills acquired on a low-cost, at-home, nonanatomic triangulation simulation system to cadaveric models. Methods:We randomized 28 medical students into either a simulator-training group (n = 14) or group with no training (control, n = 14). All subjects were pretested using a standardized checklist of arthroscopic skills on cadaveric knees and shoulders. Training-group subjects practiced on the triangulation simulator for 90 minutes per week for 4 consecutive weeks. Control subjects received no training. All subjects completed a post-test checklist of arthroscopic skills on cadaveric knees and shoulders, as well as 4 training tasks on the simulator. A blinded orthopaedic surgeon evaluated the arthroscopic videos using the Arthroscopic Surgical Skill Evaluation Tool (ASSET) score. Results:Training-group knee and shoulder ASSET scores increased from 12.2 ± 1.85 to 14.6 ± 2.76 (P = .02) and from 14.6 ± 3.5 to 17.9 ± 4.5 (P = .29), respectively. In the control group, knee and shoulder ASSET scores increased from 14.3 ± 3.12 to 14.25 ± 4.67 (P = .99) and from 14.2 ± 2.7 to 17.07 ± 6.7 (P = .58), respectively. There were no significant differences in the mean post-test ASSET scores between the training group and control group for either knee or shoulder arthroscopy. The post-test ASSET safety subscore during knee arthroscopy was significantly higher in the training group (P = .03). The training group was able to complete significantly more simulator tasks compared with controls (P = .003) at post-testing. A significant positive correlation was found between knee arthroscopy performance and the number of tasks completed during simulation post-testing (P = .043). There was no significant correlation between shoulder arthroscopy performance and simulation performance (P = .532). Conclusions:Basic triangulation skills may be acquired by training on a low-cost, at-home, nonanatomic triangulation simulation system, although the degree of transferability and universal joint applicability, as well as the existence of an early ceiling effect in skill development, could not be shown. Level of Evidence:Level II, randomized controlled trial.

Dataset Information

Elbow arthroscopy: a new setup to avoid visual paradox and improve triangulation.

Publications

Elbow arthroscopy: a new setup to avoid visual paradox and improve triangulation.

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