PubMed Health⌕ Search
Home/Archive/PubMed

PubMed · 11317812

An efficient method for modelling soft tissue in virtual environment training systems.

D P Wills·P M Chapman
View original source ↗Export metadata ↓

Abstract

Modelling soft tissues in virtual environment training systems is frequently required. The provision of both visually compelling and physically accurate models presents a number of problems for the developer. The Finite element technique presented in this paper, modal analysis, can be programmed to allow the user to easily trade-off accuracy of simulation for execution speed. It has been successfully used to produce simulations of the lateral meniscus on low powered portable computer systems.

Explore related subjects

ArthroscopyComputer SimulationComputer-Assisted InstructionFinite Element AnalysisHumansKnee JointMicrocomputersSoftwareUser-Computer InterfaceJournal Article

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

D P Wills, P M Chapman. 2001. An efficient method for modelling soft tissue in virtual environment training systems.. https://pubmed.ncbi.nlm.nih.gov/11317812/

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed2002

Meniscus.

Explore the source record for details and available documents.

Arthroscopy↗
PubMed2002

The medial meniscal root as a landmark for tibial tunnel position in posterior cruciate ligament reconstruction.

As a result of improved basic science knowledge and operative techniques, posterior cruciate ligament (PCL) reconstructions have steadily increased over the past 10 years. Even for the experienced arthroscopist, PCL reconstruction surgery can be technically challenging and fraught with complications. The most technically demanding aspect of the procedure may be placement and drilling of the tibial tunnel. Reasons for this include unfamiliarity with the posterior aspect of the knee, neurovascular risk, and the relative infrequency of the procedure being performed by most surgeons. We propose that the root of the posterior horn of the medial meniscus is an easily identifiable visible landmark that can not only aid in the localization of the position of the tibial tunnel in PCL reconstruction but also assist navigation in the posterior aspect of the knee arthroscopically.

Arthroscopy↗
PubMed2002

Arthroscopic release of the rotator interval and coracohumeral ligament: An anatomic study in cadavers.

PURPOSE: The purpose of this cadaveric study was to examine the anatomy of the normal glenohumeral joint relevant to an arthroscopic rotator interval release and define both the endpoints of a complete release of the coracohumeral ligament and the relationship to surrounding tendons and nerves. TYPE OF STUDY: An anatomic cadaveric study. METHODS: Fifteen fresh-frozen cadaveric specimens were studied with 5 specimens in group I and 10 specimens in group II. Group I specimens were used to examine the relevant anatomy, including the structures at risk, the dimensions of the rotator interval, and potential endpoints for release of the coracohumeral ligament. Measurements included (1) the supraspinatus to the subscapularis distance, (2) the distance from the rotator interval to the deep surface of the coracoid process, and (3) the distance from the rotator interval to the coracoacromial ligament at the level of the glenoid. Group II specimens underwent arthroscopic release of the rotator interval using the appearance of the coracoacromial ligament as the superficial endpoint. Dissection was then performed to examine for complete release of the coracohumeral ligament and to assess the structures at risk of injury. RESULTS: The distance from the anterior edge of supraspinatus to the superior edge of subscapularis at the glenoid rim was 21.6 mm, which increased to 27.8 mm with joint distention. The minimum distance from the rotator interval to the deep surface of the coracoid process was 11.4 mm. Before distention, the coracoacromial ligament was an average of 6.2 mm from the rotator interval capsule. Arthroscopic release from the supraspinatus to the subscapularis resulted in complete resection of the coracohumeral ligament in all 15 specimens. There were no specimens with evidence of injury to the biceps tendon, supraspinatus, subscapularis, or the conjoint tendon. CONCLUSIONS: This study confirms that intra-articularly directed arthroscopic release of the rotator interval can safely lead to complete release of the coracohumeral ligament if dissection is taken superficially to the level of the coracoacromial ligament.

Arthroscopy↗