Common Motorcycle Accident Injuries in San Diego

A passenger vehicle surrounds its occupants with a structure designed to absorb crash forces. A motorcycle does not. When a rider is struck by another vehicle or thrown from the bike, the rider’s body may absorb the impact directly.

That difference helps explain why motorcycle crashes can cause multiple serious injuries at once.

This guide covers the injuries San Diego riders commonly suffer, how they occur, what treatment and recovery may involve, and the evidence that helps document them. If you were seriously hurt in a crash someone else caused, a San Diego motorcycle accident attorney at our firm can review what happened at no cost.

Why Motorcycle Injuries Are Different

The national numbers reflect the vulnerability of motorcycle riders.

In 2024, 6,228 motorcyclists were killed in traffic crashes in the United States, accounting for 16 percent of all traffic fatalities, according to NHTSA motorcycle safety data. Per vehicle mile traveled, motorcyclists were almost 27 times more likely than passenger-car occupants to die in a crash and almost five times more likely to be injured.

A motorcycle crash may also involve more than one impact. A rider can first collide with a vehicle and then strike the pavement, a curb, another vehicle, or another object. Sliding and tumbling can produce additional injuries.

The result is often trauma to several areas of the body rather than a single isolated injury.

Our guide to how driver negligence puts motorcyclists at risk explains how these crashes happen. The sections below focus on what they can do to the rider.

Lower-Extremity Injuries: Fractures, Crush Injuries, and Degloving

The legs, knees, ankles, feet, and pelvis are particularly exposed on a motorcycle.

A NHTSA study of motorcycle injuries using trauma-center data from 2003 through 2005 found that lower-extremity injuries were the most common moderate-or-worse injuries among the motorcyclists studied. Approximately 47 percent of the patients in the analysis suffered a lower-extremity injury.

These injuries can occur when a rider’s leg is struck directly by another vehicle, trapped between the motorcycle and a car, pinned beneath the bike, or subjected to substantial twisting or crushing forces.

Serious lower-extremity injuries include:

• Fractures. The tibia, fibula, femur, ankle, foot, knee, and pelvis can all fracture in a motorcycle crash. Open fractures, where the broken bone communicates with an open wound, present additional risks and often require surgery.
• Crush injuries. A leg trapped beneath a motorcycle or between vehicles can sustain simultaneous damage to bone, muscle, nerves, and blood vessels.
• Degloving injuries. Severe shearing forces can separate skin and soft tissue from the structures beneath it. These injuries may require extensive wound care and reconstructive surgery.
• Limb-threatening injuries and amputation. The most severe crush, vascular, or soft-tissue injuries may make reconstruction difficult or impossible.

Treatment can involve external fixation, plates and screws, repeated operations, wound care, reconstructive surgery, and extensive rehabilitation. Some riders are left with chronic pain, limited motion, gait changes, nerve damage, or permanent physical restrictions.

What documents the injury: X-rays, CT and MRI imaging, operative reports, photographs, rehabilitation records, and the opinions of treating orthopedic, vascular, plastic, and rehabilitation specialists can establish both the initial severity and the long-term consequences.

Road Rash and Friction Injuries

“Road rash” can sound minor. Severe road rash is not.

When an unprotected part of the body slides across pavement, friction can abrade or burn through layers of skin and damage the tissue beneath. Gravel, glass, dirt, and asphalt can also become embedded in the wound.

Superficial abrasions may heal with wound care. Deeper friction injuries can require debridement to remove damaged or contaminated tissue, surgical treatment, or skin grafting.

Potential complications include:

• Infection. Contamination can make wound cleaning and monitoring particularly important.
• Permanent scarring. Deep injuries can leave large or irregular scars.
• Traumatic tattooing. Debris embedded beneath healing skin can cause permanent discoloration.
• Restricted movement. Scarring across a joint can tighten and interfere with motion.
• Nerve or soft-tissue damage. Deep friction injuries may extend well beyond the surface of the skin.

Road rash also changes dramatically during healing. By the time an injury claim is evaluated months later, the wound may look very different from the acute injury.

What documents the injury: Emergency and wound-care records, debridement or grafting records, plastic-surgery evaluations, and dated photographs taken throughout healing can preserve the severity and progression of the injury.

Traumatic Brain Injury, Even With a Helmet

A properly fitted motorcycle helmet is important protection against head injury, but no helmet can prevent every traumatic brain injury.

A motorcycle crash can subject the head and brain to direct impact, rapid acceleration and deceleration, and rotational forces. Riders can suffer concussions as well as moderate or severe traumatic brain injuries.

Symptoms do not always appear immediately.

According to the CDC, some mild traumatic brain injury and concussion symptoms appear right away, while others may develop hours or days later. Symptoms can include headaches, dizziness, problems with concentration or memory, sensitivity to light or noise, irritability, changes in sleep, and feeling mentally slowed or foggy.

Certain symptoms after a head injury require immediate medical attention, including worsening headache, repeated vomiting, seizures, increasing confusion, weakness or numbness, unequal pupils, slurred speech, or increasing difficulty staying awake.

A person does not have to lose consciousness to sustain a concussion or other brain injury.

What documents the injury: Emergency records, neurological examinations, imaging when medically indicated, symptom documentation, neuropsychological testing in appropriate cases, and consistent follow-up can help establish the nature and effects of the injury.

Spinal Cord, Neck, and Back Injuries

A rider thrown from a motorcycle has little control over how the body lands.

The resulting forces can injure the cervical, thoracic, or lumbar spine and cause vertebral fractures, ligament injuries, herniated discs, nerve compression, or damage to the spinal cord.

Spinal cord injuries can produce weakness, loss of sensation, impaired bowel or bladder function, and partial or complete paralysis depending on the location and severity of the injury.

Other spinal injuries may require injections, physical therapy, pain management, decompression, fusion surgery, or other treatment. Even without spinal cord damage, a serious neck or back injury can result in chronic pain and lasting restrictions on work, recreation, and everyday activities.

These injuries can also be difficult to appreciate from appearance alone. Someone with a serious disc or nerve injury may look normal while experiencing substantial pain or neurological symptoms.

What documents the injury: CT and MRI imaging, neurological findings, surgical records, electrodiagnostic studies when appropriate, treatment history, and documentation of functional limitations help show what the injury has actually changed.

Shoulder, Arm, Wrist, and Hand Injuries

Riders often instinctively extend an arm during a fall or take the impact directly through a shoulder, elbow, wrist, or hand.

That can cause fractures of the clavicle, shoulder, humerus, forearm, wrist, or hand, along with dislocations, rotator-cuff injuries, tendon damage, and nerve injuries.

Hands and wrists are particularly vulnerable when a rider tries to brace against the ground.

Treatment can range from immobilization and therapy to surgical fixation, tendon repair, or reconstruction. For someone who works with tools, types, plays an instrument, performs surgery, or depends on fine hand control, even a relatively localized injury can have substantial occupational consequences.

Brachial Plexus Injuries

High-energy motorcycle trauma can also injure the brachial plexus, the network of nerves that carries signals from the spinal cord through the shoulder and into the arm and hand.

The nerves may be stretched, ruptured, or, in a severe injury, avulsed from their roots.

Symptoms can include weakness, numbness, burning or electrical pain, loss of sensation, or inability to move part of the arm or hand. Recovery depends heavily on the type and severity of the nerve injury.

Evaluation may include MRI and electrodiagnostic testing such as EMG and nerve-conduction studies. Severe injuries sometimes require nerve grafting, nerve transfers, or other reconstructive procedures.

What documents the injury: Imaging, orthopedic and neurological examinations, EMG and nerve-conduction studies when medically appropriate, surgical records, hand-therapy records, and measurements of strength and range of motion can help demonstrate the functional loss.

Internal and Chest Injuries

A motorcycle collision can deliver substantial blunt force to the chest and abdomen from the vehicle, handlebars, fuel tank, pavement, or other objects.

Potential injuries include fractured ribs, collapsed or injured lungs, internal bleeding, and injuries to organs such as the spleen, liver, or kidneys.

Some internal injuries are not obvious from the outside. Symptoms after significant trauma can also evolve over time.

Abdominal pain or swelling, shortness of breath, fainting or dizziness, worsening chest pain, significant weakness, or other concerning symptoms after a motorcycle collision require prompt medical assessment.

Depending on the patient’s condition, trauma evaluation may include physical examination, laboratory testing, ultrasound, CT imaging, or other studies.

What documents the injury: Trauma records, imaging, laboratory results, operative reports, hospitalization records, and follow-up with the appropriate specialists establish the extent of internal injuries and the treatment they required.

Facial, Jaw, and Dental Injuries

A motorcycle crash can cause significant injuries to the face, jaw, mouth, and teeth.

Some DOT-compliant helmets provide more facial coverage than others, and even a full-face helmet cannot eliminate every injury in a sufficiently severe impact.

Potential injuries include:

• jaw fractures;
• cheekbone and orbital fractures;
• nasal fractures;
• broken or lost teeth;
• eye injuries;
• facial nerve injuries; and
• deep lacerations and permanent scars.

Treatment may require oral and maxillofacial surgery, dental reconstruction, plates or implants, ophthalmology care, plastic surgery, or scar revision.

These injuries can affect far more than appearance. Jaw and dental trauma can interfere with eating and speaking, while eye or nerve injuries can create permanent functional loss.

What documents the injury: Photographs, CT imaging, dental records, surgical reports, ophthalmology records, and documentation from oral surgeons, dentists, and plastic surgeons can establish both the medical and cosmetic consequences.

California’s Helmet Law and an Injury Claim

California requires motorcycle operators and passengers to wear a safety helmet.

Under California Vehicle Code section 27803, the helmet must meet applicable safety requirements, be worn on the head with the straps fastened, and fit securely without excessive lateral or vertical movement.

Our guide to California motorcycle laws for San Diego riders covers the other rules that commonly arise after a crash.

If a rider was not wearing a required helmet, the insurance company may try to use that fact to reduce the claim. But two different questions should be kept separate.

Who Caused the Crash?

Helmet use generally does not explain why another driver turned left in front of a motorcycle, rear-ended it, changed lanes into it, or otherwise caused the collision.

California’s comparative-fault instruction, CACI No. 405, requires a defendant claiming comparative fault to prove both that the plaintiff was negligent and that the plaintiff’s negligence was a substantial factor in causing the plaintiff’s harm.

The cause of the collision must therefore be analyzed separately from the severity of an injury.

Did Helmet Nonuse Contribute to Particular Injuries?

When the claimed injury involves the head or another area a helmet might have protected, the defense may argue that using a compliant helmet would have prevented or reduced some of the harm.

That requires a causal connection between the alleged failure and the injury being challenged. The significance of helmet use will depend on the particular injury, impact, helmet, and medical and biomechanical evidence.

The argument generally has little relevance to an injury a helmet could not have prevented, such as a fractured leg or abdominal injury.

California’s damages instructions also place the burden on a defendant asserting failure to mitigate to prove the harm that reasonable efforts would have avoided. See CACI No. 3930.

A helmet issue therefore does not automatically eliminate a motorcycle injury claim or determine who caused the crash.

Our guide to liability issues in motorcycle accidents explains how California fault rules apply to the collision itself.

How Motorcycle Injuries Are Documented and Proven

A serious injury case requires more than a diagnosis. The medical evidence must show what the crash caused, the treatment the injury required, how the rider’s condition changed over time, and what limitations are likely to remain.

Build a Complete Medical Record

Prompt medical evaluation after a serious crash serves the patient’s health first, but it also creates contemporaneous documentation of the injuries and symptoms.

Continuing with medically recommended care helps doctors evaluate the course of recovery and creates a record of what improved, what did not, and why additional treatment was necessary.

Long unexplained gaps in treatment can create evidentiary disputes about the severity or cause of continuing symptoms. There may be legitimate reasons for a gap, including insurance problems, work obligations, scheduling, or a physician’s recommendation. The medical history should accurately reflect what actually happened.

Our guide to the steps to take after a motorcycle accident covers the important first steps after a serious crash.

Preserve the Motorcycle and Riding Gear

The motorcycle, helmet, jacket, gloves, boots, and other damaged equipment may contain physical evidence.

Scrape marks, impact damage, torn clothing, helmet damage, and the condition of the motorcycle can help reconstruct how the collision occurred and how the rider’s body was injured.

When a serious injury or product-defect issue may be involved, the motorcycle and damaged equipment should be photographed and preserved before repair, disposal, or destructive examination whenever reasonably possible.

Use the Treating Medical Evidence

Treating physicians often become important witnesses because they evaluated the rider over time and documented the injury, treatment, response, and prognosis.

Depending on the issues, additional experts may be needed to address accident reconstruction, biomechanics, future medical care, vocational loss, or disputed medical causation.

Our guide to treating physician testimony on causation explains the role treating doctors can play in a California injury case.

Our guide to motorcycle insurance claims explains how insurers evaluate and challenge these claims.

Photograph Injuries as They Change

Road rash, bruising, swelling, surgical incisions, casts, external fixation, and scars can look dramatically different from one stage of recovery to the next.

Dated photographs can preserve those changes.

Photographs can also document adaptive equipment, mobility restrictions, and scarring that may no longer be visible in the same way by the time the case reaches mediation or trial.

Why Prognosis Matters Before Settling a Motorcycle Injury Claim

A serious motorcycle injury is not necessarily over when the initial hospitalization ends or a cast comes off.

Fractures can lead to post-traumatic arthritis. Hardware may cause later problems. Scars may require additional treatment. Nerve recovery can take time to evaluate. Brain injuries may affect work, relationships, concentration, and daily functioning long after the visible injuries have healed.

Some riders also experience psychological effects after a traumatic collision, including anxiety, sleep problems, or fear of returning to a motorcycle or even traveling in traffic.

You do not necessarily have to wait until every medical issue has completely resolved before an injury claim can be evaluated. But before settling a serious case, there should be enough medical information to reasonably understand the prognosis, permanent limitations, and likely future treatment.

That matters because a settlement is ordinarily final. A claim generally cannot be reopened later simply because an injury proved worse or future treatment became more expensive than expected.

For a catastrophic injury, future damages may require evidence from treating physicians, life-care planners, economists, vocational experts, or other specialists.

Our guide to compensation for motorcycle accident victims in San Diego explains the damages that may be available, while our overview of the motorcycle accident lawsuit process explains how a case moves from investigation through resolution.

Talk to Hulburt Law Firm About Your Motorcycle Injuries

A serious motorcycle accident case requires understanding not only who caused the crash, but what the injuries will mean months and years later.

Hulburt Law Firm investigates the collision, preserves the physical and electronic evidence, works through the medical evidence, and develops the proof of both current and future harm.

If you or someone you love suffered a serious injury in a motorcycle crash in San Diego, our San Diego motorcycle accident attorneys, Conor and Leslie Hulburt, can review what happened and explain your options.

Call (619) 821-0500 or send us a message through our contact form for a free, confidential case review.

There is no attorney fee unless we recover compensation for you.