#####  Ganglion Cysts of the Hand 

[Hand & Wrist](https://osshealth.com/video?specialty=hand-wrist) |

[Hand & Wrist Treatments](https://osshealth.com/video?treatment=hand-wrist) 

A ganglion cyst is a fluid-filled sac that forms as a herniation from a joint capsule or tendon sheath. The sac is attached to the joint or tendon sheath by a "stalk" that allows fluid to move into the pouch from the joint or sheath. The stalk functions as a valve and often limits fluid drainage out of the cyst, allowing the cyst to increase - but not decrease - in size. In some cases the stalk functions as a two-way valve, allowing fluid to travel in both directions. This can enable the cyst to increase and decrease in size based on activities.

[Go back to videos](https://osshealth.com/video) 

[### Shoulder Instability Shoulder View More](https://osshealth.com/video/shoulder-instability) [### Reverse Total Shoulder Replacement Shoulder View More](https://osshealth.com/video/reverse-total-shoulder-replacement) [### Medial Epicondylitis (Golfer's Elbow) Elbow View More](https://osshealth.com/video/medial-epicondylitis-golfers-elbow) [### Lateral Release and Medial Imbrication Knee View More](https://osshealth.com/video/lateral-release-and-medial-imbrication) [### Living With Osteoarthritis of the Hip Hip and Thigh View More](https://osshealth.com/video/living-with-osteoarthritis-of-the-hip) [### Knee Replacement Knee View More](https://osshealth.com/video/knee-replacement) [### Diabetic Foot Foot, Ankle and Lower Leg View More](https://osshealth.com/video/diabetic-foot) [### Anterior Cervical Discectomy and Fusion (ACDF) Spine View More](https://osshealth.com/video/anterior-cervical-discectomy-and-fusion-acdf) [### Mini-Open Rotator Cuff Repair Shoulder View More](https://osshealth.com/video/mini-open-rotator-cuff-repair) [### Slipped Capital Femoral Epiphysis (SCFE) Hip and Thigh View More](https://osshealth.com/video/slipped-capital-femoral-epiphysis-scfe)