Carpal bone fixation screws
The right wrist underwent a surgery for the separation of the scaphoid and lunate bones.
Earlier this year, while working, I accidentally twisted my wrist violently, resulting in an injury.
Since the pain fluctuated, I did not pay much attention to it.
Recently, due to frequent wrist pain and a sensation of bone displacement, I visited the hospital for a consultation.
After examination, the doctor indicated that the lateral ligament of the wrist was injured, and X-rays showed that the screws were loose.
The doctor recommended: 1.
Surgery to replace the screws and apply a cast (with the cast fixed for 6 to 8 weeks); 2.
Cast immobilization (with a longer fixation period of over 2 months, depending on the healing of the bones).
I apologize for asking again, Doctor: 1.
It is not a fracture of the scaphoid bone.
It is the loosening of the screws that fix the separation of the scaphoid and lunate bones (along with an injury to the lateral ligament below the little finger), causing pain and a sensation of bone displacement.
2.
The doctor mentioned that if I opt for non-surgical cast immobilization, it must extend above the elbow; otherwise, movement in the forearm will affect the healing of the bone at the screw site.
3.
For the surgery to replace the screws, the cast must also extend to the upper arm (4 to 6 weeks, depending on the situation, before switching to a short cast).
4.
If I choose cast immobilization, will I need to replace the screws after a period of time? How long after cast immobilization would it be considered non-healing, necessitating a screw replacement? Thank you for your response, Doctor.
A Yi, 30~39 year old female. Ask Date: 2015/06/19
Dr. Shi Guozheng reply Orthopedics
Scaphoid-lunate dissociation treatment and immobilization duration, as your attending physician mentioned, typically require about six to eight weeks.
The position of the cast is also correct.
After the cast is removed, stability should be assessed; if it remains unstable, it indicates that the surgical outcome has not been achieved.
Reply Date: 2015/06/19
More Info
When it comes to wrist surgery, particularly in the context of loose screws and treatment options, there are several important considerations to keep in mind. Based on your description, it seems that you have experienced a significant injury to your wrist, specifically involving the scaphoid bone and associated ligaments. The fact that you have loose screws from a previous surgery indicates that there may have been complications in the healing process, which can lead to ongoing pain and instability in the wrist.
Understanding the Condition
1. Scaphoid Bone and Ligament Injury: The scaphoid bone is one of the carpal bones in the wrist and is crucial for wrist stability and function. Injuries to this bone, especially fractures or dislocations, can lead to complications if not treated properly. The fact that you have a ligament injury on the outer side of your wrist adds another layer of complexity to your condition. Ligaments are essential for maintaining joint stability, and any injury can lead to pain and dysfunction.
2. Loose Screws: The presence of loose screws from previous surgery suggests that the fixation of the scaphoid or the surrounding structures may not have healed adequately. This can be due to several factors, including inadequate blood supply to the bone, excessive movement during the healing phase, or the initial surgical technique.
Treatment Options
Your doctor has provided two main options: surgical intervention to replace the screws or conservative management with a cast. Here’s a breakdown of each option:
1. Surgical Intervention:
- Replacing the Screws: This option involves a surgical procedure to replace the loose screws and potentially stabilize the wrist further. The surgery would likely involve re-fixing the scaphoid bone and ensuring that the surrounding ligaments are also addressed. After surgery, a cast will be applied to immobilize the wrist, typically extending up to the upper arm to prevent movement that could disrupt healing.
- Recovery Time: Post-surgery, the immobilization period is crucial. Depending on the extent of the injury and the surgical technique used, the cast may need to remain for 4 to 6 weeks, followed by a transition to a shorter cast or splint as healing progresses.
2. Conservative Management:
- Casting Without Surgery: If you opt for conservative management, the cast will also extend to the upper arm to limit movement. This approach may be suitable if the doctor believes that the screws can still stabilize the wrist adequately without immediate surgical intervention. However, this option may require a longer immobilization period, potentially exceeding 2 months, depending on the healing process.
- Monitoring Healing: If you choose this route, it’s essential to have regular follow-ups to monitor the healing of the bone and the stability of the screws. If there is no improvement or if the screws remain loose, a surgical option may still be necessary.
Key Considerations
- Healing Time: The healing time for bone and ligament injuries can vary significantly from person to person. Factors such as age, overall health, and the severity of the injury play a crucial role. If you are in a cast, your doctor will likely schedule follow-up X-rays to assess the healing process.
- Signs of Non-Healing: If you are in a cast and do not notice improvement in pain or function after a certain period (usually around 6-8 weeks), it may indicate that the screws are not stabilizing the bone adequately, and surgical intervention may be necessary.
- Post-Surgical Rehabilitation: Regardless of the treatment option chosen, rehabilitation will be crucial for restoring function and strength to your wrist. Physical therapy may be recommended after the cast is removed to help regain range of motion and strength.
Conclusion
In summary, the decision between surgical intervention and conservative management should be made in close consultation with your orthopedic surgeon. They will consider the specifics of your injury, your overall health, and your personal preferences. It’s essential to communicate openly with your doctor about your concerns and to follow their recommendations closely to ensure the best possible outcome for your wrist.
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