Related Experiment Video
Updated: May 31, 2026
09:36
Measurement of Spatial Stability in Precision Grip
Published on: June 4, 2020
Effect of static wrist position on grip strength
Praveen Bhardwaj1, Saumyakumar S Nayak, Asif M Kiswar
1Department of Plastic, Hand, Burns and Reconstructive Microsurgery, Ganga Hospital, Coimbatore, Tamil Nadu, India.
Summary
Optimal wrist fusion position maximizes grip strength. Studies show 45 degrees of wrist extension yields the highest grip strength, while flexion significantly reduces it.
Area of Science:
- Orthopedics
- Biomechanics
- Hand Surgery
Background:
- Wrist arthrodesis often results in reduced grip strength.
- Suboptimal positioning during wrist fusion is a suspected cause.
- There is no established consensus on the ideal wrist fusion position.
Purpose of the Study:
- To determine grip strength in various fixed wrist positions.
- To identify the optimal wrist fusion position for maximal grip strength.
Main Methods:
- 100 healthy adults participated.
- Custom splints were used to fix the wrist in five positions: 45°, 30°, 15° extension, neutral, and 30° flexion.
- Grip strength was measured bilaterally with and without splints.
Main Results:
- Average grip strength without splints: 34.3 kg (right), 32.3 kg (left).
- Grip strength decreased by 19-25% with splinting.
- Maximum grip strength was achieved at 45° wrist extension (27.9 kg right, 26.3 kg left).
- Grip strength was significantly lower in flexed positions (P < 0.001).
Conclusions:
- Wrist fusion at 45° of extension appears to maximize grip strength.
- Flexed wrist positions significantly impair grip strength after fusion.
Related Concept Videos
01:07Static Equilibrium - II
Static equilibrium is a special case in mechanics that is very important in everyday life. It occurs when the net force and the net torque on an object or system are both zero. This means that both the linear and angular accelerations are zero. Thus, the object is at rest, or its center of mass is moving at a constant velocity. However, this does not mean that no forces are acting on the object within the system. In fact, there are very few scenarios on Earth in which no forces are acting upon...
01:18Static Friction
Static friction is a force that opposes the relative motion or tendency of motion between two surfaces in contact. It plays a crucial role in our daily lives, from walking on the ground to driving a car.
For example, consider a scenario where a truck is connected to a car by a rope, ready to tow it along a road. When no external force is applied by the truck, the car remains stationary and is said to be in static equilibrium. In this case, the forces acting on the car, such as gravity and the...
For example, consider a scenario where a truck is connected to a car by a rope, ready to tow it along a road. When no external force is applied by the truck, the car remains stationary and is said to be in static equilibrium. In this case, the forces acting on the car, such as gravity and the...
01:16Muscles of the Forearm that Move the Hand and Fingers
The muscles of the forearm that move the wrist, hand, and digits are numerous and diverse. They can be classified into two groups based on their location and function — the anterior and posterior compartment muscles.
Anterior Compartment
The anterior compartment muscles originate from the humerus. They primarily function as flexors and are also known as flexor muscles. They typically insert on the carpals, metacarpals, and phalanges. The superficial layer includes the flexor carpi radialis,...
Anterior Compartment
The anterior compartment muscles originate from the humerus. They primarily function as flexors and are also known as flexor muscles. They typically insert on the carpals, metacarpals, and phalanges. The superficial layer includes the flexor carpi radialis,...