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Patellar Tendon Rupture – The Final Post Season Injury That Sunk The Spurs

On Monday night, the San Antonio Spurs bowed to the Golden State Warriors in Game 4 of the Western Conference Finals. It wasn’t much of a contest. After another stellar regular season, early playoff injuries robbed the Spurs of veteran point guard, Tony Parker (quad tendon rupture), and the electric small forward, Kawhi Leonard (ankle sprain). On Saturday, when Spurs’ center/power forward, David Lee partially tore his patellar tendon, it was all but over. This wasn’t the first time that the 34 year-old Lee underwent significant post season surgery. He’d had a torn hip flexor repaired in May of 2013 having seen very limited playoff action once sustaining the injury the month prior. Read More ›

Understanding Tony Parker’s Quad Tendon Rupture

The San Antonio Spurs lost point guard Tony Parker to a quadriceps tendon tear in the fourth quarter of game two in their series against the Rockets on Wednesday. Parker, who now faces surgery, was a big reason that San Antonio evened up the series that night at one apiece. Like the Clippers’ loss of Blake Griffin to a season-ending playoff injury, this one could cost the Spurs the ability to advance.

At age 34, Parker’s numbers this season were at a career low (10.1 ppg), though he’d ramped that up to an eight game playoff average of 15.9 on 53 percent shooting. Now he faces a long road back and, with his age and overall declining regular season numbers, a questionable return to the NBA. Read More ›

Patellar Tendon Injuries in the NFL

Knee with ruptured patellar tendon

This has been the week of the patellar tendon tear in the NFL.

Gerald McRath, a Tennessee Titans’ linebacker who had missed some playing time at the close of last season in part due to knee pain, is set for surgery to repair the partially torn left patellar tendon that has continued to hamper him. He is expected to be out for the year.

The Tampa Bay Buccaneers lost right guard Davin Joseph to a what is likely a season-ending right patellar tendon tear suffered on August 24th during a preseason victory over the New England Patriots,

Rounding out the list is promising Steelers’ rookie guard David DeCastro, who hit a terrible trifecta with a dislocated right patella, torn MCL (medial collateral ligament) and partially torn patellar tendon on August 25th in a preseason game against Buffalo. In spite of what is clearly a “severe knee injury”, optimistic reports have DeCastro returning in three to five months.

Jim Leonhard, Ryan Williams, Nate Allen and Clint Sintim are amongst NFL sufferers from recent seasons who could counsel the newest members of the patellar tendon club.

 

The Patellar Tendon

A tendon connects muscle to bone, while a ligament connects bone

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to bone.

The patella is also known as the kneecap, and the patellar tendon, which connects it to the tibia (the larger bone of the lower leg), is sometimes referred to as the patellar ligament. This tendon is a part of the extensor mechanism of the knee. The extensor mechanism also includes the quadriceps muscle (located at the front of the thigh), the quadriceps tendon (which attaches the quads to the patella), ligaments that connect the patella to the femur (thigh bone) and tibia, connective tissues that help secure and stabilize the patella, as well as the tibial tubercle (the point of attachment of the patellar tendon to the tibia).

Ruptures of the extensor mechanism occur either to the quadriceps tendon or patellar tendon and may be complete or partial. Patellar tendon ruptures generally occur in those younger than than 40 years of age, while quad tendons are more likely to rupture in those over 40. Prolonged steroid use is thought to increase the risk of rupture. When either the quad or patellar tendons are completely ruptured, the knee cannot be actively straightened at all. With a partial tear, it is generally possible to extend it at least somewhat.

Most ruptures of the patellar tendon occur when the knee is bent and subject to more of a demand than it can tolerate. Ruptures occur more frequently at the upper part of the tendon and its attachment to the patella than at the lowermost portion where it attaches to the tibia. A patellar tendon rupture may also be referred to as an avulsion, which is the term used to describe the tearing away of a body part. In the case of a tendon tear, a portion of the attaching bone may be torn away as well. Without the tendon to anchor it, when someone has a torn patellar tendon, the kneecap will ride upward and remain there. Interestingly, there is a greater incidence of patellar tendon ruptures amongst those of African decent. The reason for this is not absolutely clear.

Complete rupture of the patellar tendon requires surgical repair, and surgery is best if performed promptly to optimize outcomes. Partial tears may heal sufficiently depending on the degree of disruption and the demands placed on the muscle tendon unit. Newer operative procedures allow patients to avoid prolonged immobilization in a cast and work on mobility of the knee in the post-operative period. This generally accelerates recovery. However, healing and rehab is a process that cannot be rushed. A gradual restoration of full range of motion, muscle flexibility, strength and endurance as well as balance and agility is

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all a part of that process.

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Patellar Tendon Ruptures in the NFL

ets’ safety, Jim Leonhard, is the newest member of the NFL’s ruptured patellar tendon club, after suffering the injury in last Sunday’s victory over Kansas City. As expected, surgery will end Leonhard’s season, the second consecutive year that injury has shut him down early. Last year he fractured his right tibia (leg), the same side injured this week.

Arizona Cardinals’ rookie, and second round draft pick, Ryan Williams, has been sitting out the entire 2011 season with a right patellar tendon rupture that he sustained during a pre-season game. Only 20 years old at the time of his injury, Williams is missed on a Cardinals team that has been rebounding from a rough start and might be playoff bound if he’d been out there.

Last year’s victims of a torn right patellar tendon included Nate Allen, a rookie safety on the Eagles who was injured in December of 2010, and Clint Sintim, NY Giants linebacker, who was sidelined during a pre-season game.

Interesting that all the injuries were on the right side…

The patellar

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tendon is a part of the extensor mechanism of the knee and it serves to connect the patella (kneecap) to the tibia (larger bone of the lower leg). The extensor mechanism acts to straighten (extend) the knee, and is also comprised of the four quadriceps muscles of the front of the thigh, the quadriceps tendon (which attaches the quads to the patella), the ligaments that help to stabilize the patella (by providing a connection to the femur (thigh bone) above and to the tibia below), and also by other soft tissues on either side that help stabilize the patella and other structures of the knee.

Patellar tendon ruptures are relatively rare and they occur most often in people younger than 40 (most are in their teens or twenties). Ruptures can either be partial or complete. Complete ruptures should be surgically repaired quickly in order to enable the tendon to be sutured end-to-end. This also optimizes outcome. Waiting would result in retraction of the tissue and make a repair more difficult. The upper (proximal) portion of the patellar tendon ruptures more often than the lower. Some of these proximal ruptures pull a piece of bone away from the lower part of the patella; this type of injury is called an avulsion of the patella. It has been noted that African Americans have a greater predominance of patellar avulsions than other groups.

A complete rupture of the patellar tendon renders the quadriceps helpless, making it impossible to straighten the knee. A partial rupture makes extension difficult and is likely to make it impossible to straighten the knee through the end-range of motion.

Post-operative rehab is (as coaches say about almost everything), a process. Controlling pain and swelling in the initial phase, while also addressing mobility of the scar and surrounding soft tissue is crucial. Care must be taken to protect the repair and avoid stretching the sutured tendon too quickly, while ultimately restoring full range of motion – thereby enabling the knee to bend. Weight bearing is gradually resumed and assistive devices (crutches and canes) are eliminated once the extensor mechanism is strengthened sufficiently to fully support ambulation without significant gait abnormalities. Muscle strengthening, flexibility and endurance, as well as overall mobility and agility are all a part of rehabilitation.

A study on the recovery of NFL players who suffered patellar tendon ruptures concluded that the injury occurs most often with eccentric overload* of the extensor mechanism. It also noted that anterior cruciate ligament (ACL) tears occasionally accompany patellar tendon ruptures in the NFL, and that players without complications from other injuries generally return to play the following season. The study also found that players who’d been chosen earlier in the draft were more successful in returning to play.

• An eccentric muscle contraction is one when the muscle is actually lengthening while it is working. An example would be the second phase of a biceps curl when the elbow is straightening, thereby lengthening the biceps while the muscle works against gravity (and added weight) to slowly return the arm to its resting position.

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