Pre-operatively, lateral radiographs of both knees were performed in order to estimate the Insall– Salvati ratio and use the measurement from the uninjured side as a guide during the reconstruction. The Insall–Salvati ratio measured 1.0. The patient was consented for a patellar tendon reconstruction using hamstring graft and possible Z lengthening of the quadriceps tendon. The patient was place...

Collagen content and cross-linking are believed to be major determinants of tendon structural integrity and function. Sex and chronic resistance training have been shown to alter tendon function and may also alter the key structural features of tendon. Patellar tendon biopsies were taken from untrained men [n = 8, 1 repetition maximum (RM) = 53 +/- 3 kg], untrained women (n = 8, 1 RM = 29 +/- 2...

Knee extensor mechanism rupture is an uncommon, but significant, injury. The inability to actively extend the knee precludes normal gait. Quadriceps tendon injuries usually result from a simple fall in middle-aged men.1 Although low-energy fall mechanism of injury is most common, spontaneous rupture tends to occur in a subset of medical conditions (Table).2,3 Patients with quadriceps tendon rup...

BACKGROUND Jumper's knee is a common and troublesome condition among senior volleyball players, but its prevalence among elite junior players compared to matched non-sports active controls is not known. OBJECTIVE To clinically, and by sonography, examine the patellar tendons in elite junior volleyball players (15-19 years) at the Swedish National Centre for volleyball and in matched controls....

BACKGROUND Isolated rupture of the patellar tendon is a rare injury. Often occurring during a fall in 20- and 30-year olds, patients may have a preexisting medical condition (eg, history of steroid use) or a history of repetitive microtrauma to the knee. A high-riding patella on physical examination and radiographs is pathognomonic. METHODS Immediate orthopaedic referral for surgical repair i...

A 58-year -old man with a past history of acquired emphysema was admitted after his legs 'gave way' as he walked down a short flight of steps. He was unable to extend either knee actively. Bilateral patellar tendon ruptures were diagnosed clinically from the history, and the finding of swelling and a palpable gap below the lower pole of each patella. The diagnosis was confirmed radiologically (...

We present an exceedingly rare case of spontaneous bilateral patellar tendon rupture in a fit and well 38year-old Afro-Caribbean gentleman regularly participating in recreational long-distance running. Prior to sustaining this injury, he complained of ongoing anterior knee pain, for which he was awaiting an outpatient X-ray arranged by his general practitioner after weeks of anti-inflammatory m...

BACKGROUND According to the literature, closing and opening wedge high tibial valgus osteotomies can raise or lower the patella, and diffèrent methods of patella height measurement show similarly conflicting results. Clarification of this was thought to be important because there is much literature describing morbidity secondary to patella alta or patella infera (baja). Effects on tibial slope ...

Bone grafting of the patellar defect from harvest of the central third bone-patellar tendon-bone autograft in anterior cruciate ligament (ACL) reconstruction has been advocated by some authors to decrease the risk of patellar fracture from the existing stress riser as well as decrease postoperative donor site pain. We present a method of harvesting bone reamings during ACL reconstruction that i...