• ​​​Arm pump, medically known as Chronic Exertional Compartment Syndrome (CECS) of the forearm, is a condition that causes pain, numbness, forearm tightness, and grip weakness during intense or repetitive activity, most commonly seen in motocross, enduro, and off-road racers.

• During prolonged exertion, the forearm muscles swell as blood flow increases and metabolic demand rises. However, these muscles are surrounded by a tough, non-elastic tissue layer called fascia. Because the fascia cannot stretch, the increasing muscle volume has nowhere to go, leading to a rapid build-up of pressure inside the closed compartment.

• That elevated pressure compresses blood vessels and nerves, restricting oxygen delivery and causing the hallmark symptoms:

  • Burning, cramping, or “bursting” forearm pain

  • Numbness or tingling in the fingers

  • Grip weakness or loss of throttle/clutch control

  • Relief at rest, but quick recurrence during riding​​​

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• Using one small incision and specialized endoscopic instruments, the fascial layers of the volar and dorsal compartments are released under direct visualization — similar to modern endoscopic carpal tunnel techniques.

• Dr. Tanner performs a minimally invasive endoscopic fasciotomy, designed to relieve compartment pressure while minimizing soft tissue disruption.

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• Smaller incision and minimal scarring

• Faster recovery with less postoperative stiffness

• Decreased swelling and soft-tissue trauma

• Early return to training and competitive racing

 

 

• ​Operative Time: Approximately 30-45mins per side.

• Anesthesia: Typically general anesthesia if both forearms are treated; local or regional block for single-arm procedures

• Approach: Small endoscopic incision (< 1.5 inches)

• Setting: Outpatient (same-day surgery)

• Technique: Direct endoscopic visualization and fascial release

• Post-Op Care: Early gentle motion encouraged; compression wrap applied

 

 

• Most riders resume light riding within 3 weeks and return to competitive racing within 5 weeks.

• Forearm endurance and grip strength continue to improve for 6 – 8 weeks as the tissue remodels and circulation normalizes.

• Dr. Tanner’s tailored rehabilitation protocol emphasizes mobility, scar management, and progressive grip-strength training to restore maximum performance.

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• You may benefit from endoscopic fasciotomy if you:

• Experience chronic forearm pain, tightness, or fatigue during racing or training

• Have symptoms unrelieved by therapy, rest, or relaxation techniques

• Notice recurrent “pump” despite hydration, nutrition, bike settings and grip adjustments.

• Have confirmed elevated compartment pressures or a clinical diagnosis of CECS

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• If you’re struggling with forearm tightness or “arm pump” during riding, contact Tanner Orthopaedics to discuss minimally invasive options directly with Dr. Marc Tanner.

• 📧 Email: TannerOrthopaedics@gmail.com
  📍 Address: 3150 Highway 153, Piedmont, SC 29673