# A/P TRANSLATION IN THE KNEE--CHANGES AFTER ACL SURGERY

> **NIH NIH R01** · UNIVERSITY OF CINCINNATI · 1992 · $214,619

## Abstract

Much controversy exists over the significance of the knee laxity exam.  This has
resulted, in part, from a lack of knowledge as to the restraining functions of
the various ligaments and capsular structures.  During the first grant period we
measured the ligament restraints to the so-called "straight instabilites."
These are anterior-posterior drawer and straight medial-lateral opening.  In the
proposed renewal period we will study the restraining action of the ligaments to
the rotatory instabilities.  These instabilities involve combined rotational and
translational knee motion.  The rotatory motion is that associated with axial
tibial rotation.  The translations are anterior-posterior drawer and
medial-lateral shifting of the tibia.

We propose to address the problem of defining the significance of rotatory
laxities, with regard to injury, by applying three distinct methodologies.
These are described below in separate projects.  They include:  1)  Measuring
the three-dimensional restraining forces of the ligaments to well defined and
reproducible rotations of the tibia,  2) measuring the three-dimensional motions
which occur during the various clinical exams for rotatory instability along
with the changes in motion associated with specific ligament injuries, and 3)
synthesizing these results on ligament function into a mathematical model
capable of testing our understanding of both the effects of the various
individual factors (i.e., ligaments, joint geometry, compressive forces, etc.)
and their complex interactions.

## Key facts

- **NIH application ID:** 3155152
- **Project number:** 5R01AR021172-14
- **Recipient organization:** UNIVERSITY OF CINCINNATI
- **SAM.gov UEI:** DZ4YCZ3QSPR5
- **Principal Investigator:** EDWARD S GROOD
- **Activity code:** R01 (R01, R21, SBIR, etc.)
- **Funding institute:** NIH
- **Fiscal year:** 1992
- **Award amount:** $214,619
- **Award type:** 5
- **Project period:** 1978-01-01 → 1993-05-31

## Primary source

NIH RePORTER: https://reporter.nih.gov/project-details/3155152

## Citation

> US National Institutes of Health, RePORTER application 3155152, A/P TRANSLATION IN THE KNEE--CHANGES AFTER ACL SURGERY (5R01AR021172-14). Retrieved via MORVS 2026-10-24 from https://api.morvs.ai/grant/nih/3155152. Licensed CC0.

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