Etiology and pathophysiology of tendon ruptures in sports

Abstract

Of all spontaneous tendon ruptures, complete Achilles tendon tears are most closely associated with sports activities (1–3). Schönbauer (3) reported that 75% of all ruptures of the Achilles tendon are related to sports. In Plecko & Passl (2) the number was 60%. In our material of 430 cases, the number of sports‐related Achilles ruptures was very similar (62%), while only 2% of ruptures of other tendons were sports‐related (P<0.001) (1). Also, the majority of Achilles reruptures occurred in sports. The ruptures occurred most often in soccer (34%), track and field (16%) and basketball (14%). The distribution of Achilles ruptures according to different sports varies considerably from country to country, according to the national sport traditions. For example, in northern and middle Europe, soccer, tennis, track and field, indoor ball games, downhill skiing, and gymnastics are the most common; and in North America, football, basketball, baseball, tennis and downhill skiing dominate the statistics (1, 2, 4). In sports, some Achilles ruptures are not spontaneous or degeneration‐induced but may occur as a consequence of the remarkably high forces that are involved in the performance (2). Ruptures in the high jump or triple jump are good examples. In such cases, failure in the neuromuscular protective mechanisms due to fatigue or disturbed co‐ordination can frequently be found. The spontaneous complete rupture of the supraspinatus tendon of the rotator cuff does not occur very frequently in sports. Those sports that include high‐energy throwing movements, such as American and Finnish baseball, American football, rugby and discus and javelin throwing, may, however, produce this injury. Partial tears and inflammations of the rotator cuff complex are much more frequent in throwing sports. The complete rupture of the proximal long head of the biceps brachii tendon is rare among competitive and recreational athletes. In our material, under 2% of these ruptures were associated with sports activities (5). The rupture (avulsion) of the distal tendon of the biceps muscle is rare. In sports, gymnastics, body building and weight lifting have been said to be able to produce this injury (6). In general, complete ruptures of the quadriceps tendon and the patellar tendon occur most often in older individuals. In our study, the mean age of these patients was 65 years (5). However, these injuries do also occur in younger age groups, especially in athletes. In athletes, the rupture most frequently occurs in high‐power sports events, such as high jump, basketball and weight lifting, at the age of 15‐30 years. A chronic patellar apicitis (jumper's knee) may predispose rupture of the tendon (7). As is the case with the rotator cuff complex, overuse inflammation and partial tears of the quadriceps and patellar tendons are one of the most characteristic athletic injuries. Complete spontaneous ruptures of other tendons in sports are rare, although the literature does provide case studies from almost every tendon the human body possesses (8–18).

Evidence for an Inherited Predisposition Contributing to the Risk for Rotator Cuff Disease

“…The largest body of data evaluating the genetic link between tendinopathies, as far as we know, has been reported for patients with Achilles tendinopathy or tearing. Several studies have found a correlation between blood group O or the A/O ratio and Achilles tendon ruptures [23][24][25] . The ABO gene is located on chromosome 9 and encodes for enzymes that produce the major antigens in the ABO blood group system.…”

The use of autologous platelet–leukocyte gels to enhance the healing process in surgery, a review

“…Soft tissue trauma such as tendon and ligament ruptures and joint capsular injuries, which frequently occur, often require a surgical intervention [24,25]. It is presumed that surgical repair combined with the application of biologically active PLG should accelerate healing with an improved outcome.…”

Gene Variants that Predispose to Achilles Tendon Injuries: An Update on Recent Advances

“…The abundance of group O was even higher (69%) in individuals who had sustained a re-rupture (Jozsa et al, 1989). Subsequent studies by Kujala and colleagues (Kujala et al, 1992) and Kannus and Natri (Kannus & Natri, 1997 as cited by September, 2007) have documented associations between Achilles tendon rupture and blood group distribution. Interestingly, the relationship between blood group distribution and risk of Achilles tendon rupture was not observed in subsequent work involving 215 Achilles patients recruited in a Finnish cohort (Leppilahti et al, 1996), 78 patients in a Scottish based cohort (Maffulli et al, 2000) and in a small South African based study involving 75 rupture cases and 131 controls as cited by September 2007).…”