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Table 1

Summary for cases reported in the literature where bilateral quadriceps tendon rupture occurred in absence of any identifiable risk factors.

Authors Age/sex Mechanism of injury Risk factor Initial diagnosis Diagnosis delay Surgical technique Outcome
Wetzler and Merkow 1950 [41] 46/Male Spontaneous None Neurologic condition 42 days Transosseous Fixation Full recovery
Kleintz et al. [42] 59/Male Spontaneous None Ligamentous injury 14 days Primary repair Full recovery
Sagiv et al. [43] 78/Male Spontaneous None Neurologic condition 3 days Nonabsorbable sutures to the patella using drill holes in its upper pole Full recovery
Calvo [14] 39/Male Spontaneous None No initial diagnosis 21 days Left tendon was repaired with wire sutures passed through drill holes in the patella. End-to-end repair was carried out in the right tendon. Full recovery
Onuoha et al. [44] 60/Male Spontaneous None Diagnosed at first presentation None Primary repair Full recovery

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