Instrument for evaluating balance of knee joint

An instrument for tensioning and balancing a knee joint comprising:

• a main support;
• a first member mounted on the main support and including a first paddle;
• a second member pivotally mounted on the main support and including a second paddle and an angle reference member thereon;
• a drive device interconnecting the first member and the main support for positionably adjusting the first member toward and away from the second member;
• and
• a spring rod interconnecting the second member and the main support for biasing the second paddle to a neutral position relative to the angle reference member.

An instrument for tensioning and evaluating balance for a knee joint comprising:

• a main support;
• a first member adjustably mounted on the main support and including a first paddle extending in a lateral orientation relative to the main support;
• a second member mounted on the main support and including a second paddle and an angle reference member thereon, the second paddle extending in lateral orientation relative to the main support substantially parallel to the first member and pivotally movable to an angular position from the lateral orientation;
• a drive device interconnecting the first member and the main support for positionably adjusting the first member toward and away from the second member;
• and
• a spring rod interconnecting the second member and the main support for biasing the second paddle from the angular position to the lateral orientation.