Hand Conditions

Nerve / Tendon:
Carpal Tunnel Syndrome
Focal Dystonia Syndrome
Guyon's Canal Syndrome
Hypothenar Hammer Syndrome
Trigger Finger/Tenosynovitis

Bone / Joint:
Arthritis of the Hand
Arthritis of the Thumb (Basilar Joint)
Dupuytren's Disease
Navicular Avascular Necrosis (and Kienböck's disease)

Hypothenar Hammer Syndrome (HHS)

Hypothenar Hammer Syndrome (HHS) is a neurovascular overuse condition that generally results from a continuous, or ongoing pounding motion affecting the ulnar side of the palm, the hypothenar region. It is often prompted by a trauma to the ulnar artery distal to the Guyon's canal, leading to thrombosis of the ulnar artery.

Symptoms of HHS may include sensitivity to cold and pain in the palm, as well as ulnar digital numbness and tingling. More severe cases may result in weakening grip strength, discoloration of the finger and an ulcer at the fingertip.

Risk Factors
HHS often affects those involved in such sports-related activities as excessive biking, karate, and lacrosse. It also affects those involved in non sports-related activities such as the use of a jackhammer or repeated hammering required in roofing. In fact, those involved in manual labor that subjects hands to constant pounding and aggressive motion are most frequently diagnosed with the condition.

Diagnosis and Treatment
The patient's medical and work history, as well as the symptoms experienced and location of the pain, will often times identify this condition. Imaging scans may also be indicated in order to identify any obstruction to the blood vessel that may exist.

While surgery is required in some severe cases of HHS, conservative treatment is generally all that is indicated - refraining from the activity prompting the condition, rehabilitative exercises and possibly medication to assist in blood flow.