Abstract
Tennis leg is the term applied to acute injury of the musculotendinous unit of the gastrocnemius muscle. This injury occurs most commonly following an acute, forceful push-off with the foot of the affected leg. Although this injury has been given the name tennis leg because of its common occurrence in tennis players, tennis leg can also be seen in divers, jumpers, hill runners, and basketball players. Occurring most commonly in men in the fourth to sixth decade, tennis leg is usually the result of an acute traumatic event secondary to a sudden push-off or lunge with the back leg while the knee is extended and the foot dorsiflexed, thus placing maximal eccentric tension on the lengthened gastrocnemius muscle (Fig. 120.1). Tennis leg has also been reported during namaz praying owing to simultaneous forced dorsiflexion of ankle and extension of the knee.
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