ACL Injuries in Dogs: What Every Pet Owner in San Diego Should Know
- Animals Only Team
- Apr 30
- 8 min read
SELF-CARE FOR YOUR BEST FRIEND
Cranial cruciate ligament tears (CCL), similar to ACLs in humans, are one of the most common injuries in dogs. Here's what treatment looks like — and how rehab makes all the difference.
If your dog has recently started limping, favoring one hind leg, or struggling to get up after rest, there's a chance they may have injured their cranial cruciate ligament (CCL) — the canine equivalent of the ACL in humans. It's a frightening diagnosis for any pet parent, but the good news is this: with the right treatment and a dedicated rehabilitation plan, most dogs can return to a full and active life.
At our integrative rehab clinic in San Diego, we work with dogs recovering from CCL injuries every day. Here's everything you need to know.
❓What Is the Cranial Cruciate Ligament?
The cranial cruciate ligament is a small but critical band of tissue inside the knee joint (called the stifle in dogs). It connects the femur (thigh bone) to the tibia (shin bone) and stabilizes the joint during movement — preventing the tibia from sliding forward and rotating.
Unlike human ACL tears, which are usually caused by a single traumatic event, most CCL tears in dogs happen gradually. The ligament weakens and frays over time until it partially or fully ruptures — often during a higher intensity movement like jumping off the couch or making a sharp turn during zoomies, although a degenerative ligament can fully tear with a simple movement like getting up from laying or walking at the beach. .
🐕 Which Dogs Are Most at Risk?
CCL injuries can affect any dog, but some are more predisposed than others:
Large and giant breeds: Labrador Retrievers, Rottweilers, Golden Retrievers, and Newfoundlands are among the most commonly affected.
Overweight dogs: Excess body weight puts chronic stress on the joints, accelerating ligament degeneration.
Middle-aged to older dogs: Most CCL tears occur in dogs between 5–10 years old, though younger dogs can be affected too.
"Weekend warrior" dogs: Dogs who are mostly sedentary but suddenly engage in intense activity are at higher risk.
Dogs with a steep tibial plateau angle: This anatomical factor, common in certain breeds, increases mechanical strain on the CCL.
🐾 Recognizing the Signs
CCL injuries can range from a partial tear to a complete rupture. The signs can appear suddenly or develop slowly over weeks. Watch for:
Sudden lameness or limping in a hind leg
Reluctance to bear weight on one leg
Sitting with one leg stuck out to the side
Swelling around the knee joint
Stiffness after rest that does not improve with movement
Decreased activity, reluctance to jump or climb stairs
A clicking sound coming from the knee
If you notice any of these signs, schedule a veterinary exam as soon as possible. The sooner a CCL injury is diagnosed, the better the outcome.
🩺 How Is a CCL Injury Diagnosed?
Diagnosis begins with a physical examination. Your veterinarian will perform specific tests — including the "drawer test" and "tibial compression test" — to assess whether the tibia shifts abnormally relative to the femur, indicating an abnormality in the ligament that keeps the knee stable. X-rays are typically taken to evaluate the joint for signs of arthritis and to rule out other causes of lameness.
In some cases, especially for partial tears, additional imaging such as diagnostic arthroscopy may be recommended to get a clearer picture of the extent of the damage.
🏥 Treatment Options: Surgery and Beyond
Treatment depends on the dog's size, severity of the injury, overall health, and lifestyle. The two main paths are surgical and conservative management.
Surgical Options
Surgery is generally recommended for medium to large dogs and those with complete tears. The most commonly performed procedures include:
TPLO (Tibial Plateau Leveling Osteotomy): The most widely performed surgery for CCL injury. The tibial plateau is cut and repositioned to change the biomechanics of the joint, eliminating the need for the CCL entirely.
TTA (Tibial Tuberosity Advancement): A similar concept to TPLO but uses a different approach to neutralize the shear forces in the knee.
Lateral Suture/Extracapsular Repair: A simpler procedure that may be appropriate for small dogs or mild injuries but requires longer rest time.
Conservative Management
For dogs with mild partial ruptures, or dogs who are not surgical candidates due to age or health conditions, conservative management may be an option. This involves strict rest, pain management, joint support, and a structured physical rehabilitation program.
❤️🩹 Why Rehabilitation Makes All the Difference
Whether your dog has surgery or is managed conservatively, rehabilitation therapy is one of the most important factors in a successful recovery. And yet, it's still one of the most underutilized tools in veterinary medicine.
Here's what a structured rehab program can do for a dog recovering from a CCL injury:
Reduce pain and swelling: Modalities like laser therapy, , shockwave therapy, and manual therapy help manage pre-surgical and post-surgical discomfort and accelerate tissue healing.
Restore range of motion: Targeted exercises and hands-on techniques prevent scar tissue from limiting joint mobility.
Rebuild muscle mass: Dogs often lose significant muscle in the affected leg after injury or surgery. Rehab rebuilds strength methodically and safely.
Improve balance and proprioception: CCL injuries cause off weighting of the injured leg. Balance exercises restore symmetric weight bearing faster. Prevent complications: Dogs who don't receive rehab are more likely to develop compensatory injuries in the opposite leg, hips, or spine.
Speed up return to normal activity: Studies show dogs who complete a rehabilitation program after TPLO surgery recover significantly faster than those who don't.
🔦 Pet Patient Spotlight: Meet Rosie
Rosie recently underwent TPLO surgery (Tibial Plateau Leveling Osteotomy), a common procedure used to treat a torn CCL—similar to an ACL injury in humans. When this ligament tears, the knee becomes unstable and painful.
Rather than repairing the ligament itself, TPLO works by adjusting the angle of the tibia to stabilize the joint, allowing dogs to move comfortably again without relying on the damaged ligament.
In simple terms, TPLO helps:
Stabilize the knee
Reduce pain and inflammation
Slow the progression of arthritis
Restore mobility and strength
But surgery is just one part of the process—rehabilitation plays a critical role in recovery.
At Animals Only, Rosie’s rehab plan includes therapeutic laser, underwater treadmill sessions, and targeted strengthening exercises, all tailored to support her healing and rebuild her confidence.
She’s putting in the work every step of the way, and it shows. Rosie is a perfect example of how strength and spirit go paw in paw during recovery—and we’re proud to be part of her journey.
🐾 What Rehab Looks Like at Our San Diego Clinic
Our integrative approach combines the best of physical rehabilitation with supportive therapies to treat the whole dog — not just the injury. A typical CCL rehab program may include:
Underwater treadmill (hydrotherapy) — allows dogs to walk and build muscle with minimal joint stress
Therapeutic laser — reduces inflammation and promotes cellular healing
Therapeutic exercises — a progressive program tailored to each dog's recovery phase
Manual therapy and massage — reduces muscle tension and improves mobility
Acupuncture — restores neuromuscular control and provides pain relief
Home exercise programs — so recovery continues between clinic visits
Each dog's program is customized based on their surgery type, age, fitness level, and recovery progress. We work closely with your primary veterinarian or surgeon to ensure a seamless, coordinated care plan.
🐾 The Road to Recovery: What to Expect
Recovery from a CCL injury takes time and commitment. For dogs undergoing TPLO surgery, the typical timeline looks something like this:
Weeks 1–2: Strict rest, pain management, incision care, and gentle range-of-motion exercises.
Weeks 3–6: Gradual introduction of controlled leash walks, hydrotherapy, and strengthening exercises.
Weeks 6–12: Progressive exercise program focusing on muscle building and functional movement.
3–6 months: Return to normal activity, with clearance from the rehab team and surgeon.
Every dog is different. Some recover quickly; others need more time. The key is patience, consistency, and professional guidance every step of the way.
🏔️ San Diego Dogs Love to Be Active
Living in San Diego means year-round outdoor adventures with your dog — and that's one of the great joys of life here. But it also means our dogs are often more active than dogs in other parts of the country, and that activity level can accelerate wear on joints and ligaments, especially in predisposed breeds.
Many of the CCL injuries we see at our clinic happen at the very places San Diego dog owners love most. Here's what to watch out for at some of our city’s favorite spots:
Dog Beaches
Ocean Beach Dog Beach (OB Dog Beach): One of San Diego's most beloved off-leash beaches, OB Dog Beach is a paradise for dogs — but sprinting through soft sand and chasing waves puts significant rotational stress on the stifle joint. Dogs who zoom at full speed and make sharp cuts are at elevated risk for ligament strain.
Coronado Dog Beach: The wide, flat shoreline at Coronado is gentler on joints than OB, but long fetch sessions and ocean play can still fatigue the muscles that support the knee. A great spot — just watch for signs of limping after play.
Del Mar Dog Beach: Seasonal off-leash rules make Del Mar a popular destination, especially in the cooler months. The packed sand near the waterline is actually better for joint stress than loose dry sand — but the excitement of other dogs can lead to sudden bursts of speed that are a common precursor to CCL injury.
Hiking Trails
Mission Trails Regional Park: With over 60 miles of trails and challenging elevation changes — including the summit of Cowles Mountain — Mission Trails is a workout for dogs as much as their owners. Downhill sections place high impact load on the rear limbs, and rocky terrain can cause sudden slips that strain the CCL. It's a fantastic park, but one where fit dogs in good muscular condition fare best.
Los Peñasquitos Canyon Preserve: This mostly flat, shaded canyon trail is actually one of the more joint-friendly options in San Diego — lower impact than mountain hikes and easier on older dogs. That said, creek crossings and uneven footing near the waterfall can catch dogs off guard. Keep an eye on any stumbling or reluctance to jump.
Sunset Cliffs Coastal Trail: A beautiful walk along the OB coastline, but the uneven cliff-top terrain and occasional scrambling can be tough on dogs with pre-existing joint issues. Best reserved for dogs who are already in good rehabilitative condition.
Coast Walk Trail (La Jolla): This scenic coastal path in La Jolla is moderately hilly and can be slippery in places. The combination of hillside descents and loose dirt makes it a trail where even healthy dogs can take a misstep.
A note on Torrey Pines State Natural Reserve: The main reserve does not permit dogs on trails, but the Torrey Pines Extension trails nearby do allow leashed dogs. If you hike here, the steep terrain and sandy paths are demanding — a strong core and healthy joints are essential before tackling it.
The Golden Rule for Active San Diego Dogs
No matter where you take your dog — beach, canyon, or coastal trail — the best protection against CCL injury is a dog with strong, well-conditioned supporting muscles. That means regular, moderate exercise rather than intense weekend bursts, maintaining a healthy weight, and addressing any early signs of stiffness or lameness before they become a bigger problem.
If your dog has already had a CCL injury and you're eager to get back to your favorite trails and beaches — we understand. Our job is to get them there safely.
💬Ready to Help Your Dog Recover?
If your dog has been diagnosed with a CCL injury — or if you're concerned about symptoms you've been noticing — we're here to help. Our team of rehabilitation specialists serves pet families across San Diego County, offering compassionate, evidence-based care from initial evaluation through full recovery.
Schedule a consultation at Animals Only and take the first step toward getting your dog back on all four paws.
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