Preoperative Templating of Bone-Patellar Tendon-Bone Graft for Anterior Cruciate Ligament Reconstruction: A Morphometry-Based Graft Harvest Method.

Background: Knowledge of anatomy and morphometry of the patella and patellar tendon is crucial for the selection of bone-patellar tendon-bone (BTB) graft for anterior cruciate ligament reconstruction. Graft tunnel mismatch in BTB graft especially in patients with patella alta or baja can result in compromised fixation for the bone-to-bone healing. This complication can be avoided by proper templating of graft using parameters measured from magnetic resonance imaging (MRI). The study aimed to derive morphometric data from MRI and predict the suitability of BTB graft preoperatively. Methods: MRI of 1,002 knees was chosen from database after applying the eligibility criteria, which included individuals in the age group of 18-50 years (both sexes) with the intact patella and patellar tendon. Individuals with pathologies of the knee joint and associated structures such as patellar fracture/dislocations, fractures of the distal femur and proximal tibia, and avulsion of the quadriceps tendon or patellar tendon were excluded. For analysis, 1.5 Tesla, proton density, and fat-suppressed sequences of sagittal and axial sections of T2-weighted MRI images were used. Results: Mean age of the 1,002 patients was 35.45 years and there were 290 women and 712 men. Respective measurements were as follows: patella length, width, and thickness, 40.3 mm, 40.2 mm, and 18.6 mm, respectively; patellar tendon length, width, and insertional thickness, 45.2 mm, 27.2 mm, and 5.7 mm, respectively; Insall-Salvati ratio, 1.13; overall graft length, 90.2 mm; and effective tendon length, 26.1 mm. Conclusions: A simple MRI analysis can give us valuable inputs on BTB graft morphometry. The values can also help us with the near-perfect graft harvest. The intraoperative complication of graft tunnel mismatch can be avoided by predicting the overall graft length, effective tendon length, tibial tunnel length, and patellar position using the measured parameters on MRI.

Rectangular bone-patellar tendon bone grafts reduce early graft failure in chronic ACL-Deficient knees.

BACKGROUND: The aim of this study was to assess early graft failure after anterior cruciate ligament (ACL) reconstruction according to chronicity of ACL deficiency (ACLD) and clarify predisposing factors. METHODS: A total of 731 patients who underwent anatomic ACL reconstruction were divided into 3 groups based on chronicity of ACLD: <6 months (Group 1), 6 months to 2 years (Group 2), and >2 years (Group 3). Types of ACL grafts used included single-bundle hamstring tendon (HT), multiple-bundle HT, and rectangular bone-patellar tendon-bone (BTB) grafts. Preoperatively and immediately postoperatively, lateral radiographs in full extension were taken to examine anterior tibial subluxation (ATS). All ACL grafts were evaluated by MRI at 6 months to identify graft failure. The group with the highest failure rate was further examined to compare possible risk factors between the intact and failure subgroups, followed by multivariate logistic regression analysis to identify predisposing factors. RESULTS: Early graft failure on MRI without any episode of postoperative trauma was observed in 7 (1.4%), 2 (1.8%), and 11 (9.2%) patients in Groups 1, 2, and 3, respectively, with a significantly higher rate in Group 3 (P < 0.001). Of the 119 patients in Group 3, significant differences were observed between intact and failure subgroups with regard to surgical procedure (P = 0.03), chondral lesions (P < 0.01), and preoperative ATS (P < 0.01). Multivariate logistic regression analysis revealed that surgical procedures (odds ratio, 3.8; 95%CI, 1.16-12.59) and preoperative ATS (odd ratio, 2.4; 95%CI, 1.26-4.38) were predisposing factors of early graft failure. CONCLUSION: Patients with ACLD for >2 years experienced early graft failure with an incidence rate of 9.2%. Predisposing factors of early graft failure in these patients included the use of single-bundle HT grafts and preoperative ATS. The use of rectangular BTB grafts resulted in a lower graft failure rate. STUDY DESIGN: Case Series.

Biomechanics of hamstring tendon, quadriceps tendon, and bone-patellar tendon-bone grafts for anterior cruciate ligament reconstruction: a cadaveric study.

PURPOSE: The three most commonly used autografts for anterior cruciate ligament reconstruction (ACL) are: bone-patellar tendon-bone (BTB), hamstring tendons (HT), and quadriceps tendon (QT). A cadaveric study was performed to determine if there were any differences in mechanical and structural properties under biomechanical testing. METHODS: Twenty-seven graft specimens were harvested from 9 human cadaveric legs. Mean donor age was 75.2 years (range 53-85 years). Twenty-two specimens (8 HT, 7 QT, and 7 BTB) completed cyclic preconditioning from 50 to 800 N for 200 cycles and a load to failure test at an extension rate of 1 mm/s. Structural and mechanical properties of BTB, HT, and QT grafts were compared using a one-way ANOVA and Tukey's honest significant difference. RESULTS: There was no difference in the ultimate load to failure (N) across all 3 graft types (p = 0.951). Quadriceps tendon demonstrated greater cross-sectional area (mm2) when compared to both HT and BTB (p = 0.001) and was significantly stiffer (N/mm) than HT but not BTB (p = 0.004). Stress (N/mm2) of the HT at ultimate load was greater than QT but not BTB (p = 0.036). Elastic modulus (MPa) of HT was greater than both QT and BTB (p = 0.016). CONCLUSION: There was no difference in the ultimate load to failure of BTB, HT, and QT grafts harvested from the same specimens. All 3 grafts had similar loads to failure with a significant increase in stiffness when compared to the native ACL. Furthermore, QT demonstrated more favourable structural properties compared to HT and BTB with greater cross-sectional area to both HT and BTB and greater stiffness compared to HT.

In vivo knee rotational stability 2 years after the ACL reconstruction using a quadriceps tendon graft with bone block and bone-patellar tendon-bone graft.

INTRODUCTION: The aim of this prospective randomised study was to evaluate clinical results and rotational stability at least 2 years after single-bundle anatomic anterior cruciate ligament reconstruction using a quadriceps tendon graft with bone block (BT) and bone-patellar tendon-bone graft (BTB). MATERIALS AND METHODS: In both groups (BT and BTB), 40 patients selected prospectively at random were evaluated. The mean follow-up after the surgery was 28 months (range 24-33 months). A navigation system was used to measure rotational stability of the knee joint. Cincinnati, Lysholm, and IKDC scores and visual analog score (VAS) were used to evaluate clinical results and the non-parametric Wilcoxon test was used for the statistical analysis. RESULTS: After the BT reconstruction, the mean internal rotation of the tibia (IR) was 9.5°. In the contralateral healthy knee joint, IR was 8.6° at average. After the BTB reconstruction, the mean IR was 9.9°. In the contralateral healthy knee joint, IR was 8.7° at average. We did not find any statistically significant difference in IR stability between BT and BTB reconstruction. In terms of clinical results, regarding the VAS, patients perceive significantly more pain after the BTB reconstruction (p < 0.05). Kneeling was reported more difficult and painful after BTB reconstruction. CONCLUSIONS: The BT reconstruction of the ACL provides similar clinical results, less pain, better flexion and the same rotational stability of the knee in comparison with the BTB reconstruction.

Revision Anterior Cruciate Ligament Reconstruction Using Bone-Patellar Tendon-Bone Graft Combined With Modified Lemaire Technique Versus Hamstring Graft Combined With Anterolateral Ligament Reconstruction: A Clinical Comparative Matched Study With a Mean Follow-up of 5 Years From The SANTI Study Group.

BACKGROUND: Additional lateral extra-articular tenodesis (LET) has recently been correlated with improved clinical outcomes and reduced failure rates in revision anterior cruciate ligament (ACL) reconstruction (ACLR). However, no data are available on clinical outcomes and reoperation after revision ACLR using different LET procedures. PURPOSE: To compare the clinical outcomes of ACL + anterolateral ligament (ALL) reconstruction using hamstring tendon graft (HT-ALL) and a bone-patellar tendon-bone (BPTB) graft + modified Lemaire tenodesis procedure (BPTB-Lemaire) in the setting of revision ACLR and to determine whether ALL reconstruction is associated with an increased rate of adverse outcomes when compared with a modified Lemaire tenodesis procedure. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Descriptive data and clinical outcomes were prospectively collected from patients who underwent revision ACLR with LET between 2009 and 2018 with a minimum follow-up of 2 years. Patients with an HT autograft combined with ALL reconstruction (HT-ALL group) were matched in a 1:1 propensity ratio to patients with a BPTB autograft combined with a modified Lemaire LET procedure (BPTB-Lemaire group). The evaluated parameters included complications and reoperations; knee laxity tests; return to sports; and various scores, including the Lysholm knee score, Tegner activity scale, Anterior Cruciate Ligament Return to Sport After Injury scale, Marx activity rating scale, International Knee Documentation Committee subjective knee evaluation form, and Knee injury and Osteoarthritis Outcome Score. RESULTS: In total, 36 matched pairs were included in the analysis. The mean follow-up durations for the BPTB-Lemaire and HT-ALL groups were 56 ± 35 and 57 ± 23 months, respectively (P = .91). No significant differences were found in graft rupture rate (HT-ALL, 0%; BPTB-Lemaire, 11.1%; P = .13) or reoperations (HT-ALL, 8.3%; BPTB-Lemaire, 22.2%; P = .23). No specific complications with regard to LET were noted in either group. Additionally, there were no significant differences in knee laxity parameters, return to sports, or clinical scores between the groups at the final follow-up, except for the Tegner activity scale score (HT-ALL, 6.4; BPTB-Lemaire, 7.3; P = .03). HT-ALL was associated with a shorter surgical time (41.4 vs 59.8 minutes; P < .0001). CONCLUSION: HT-ALL was at least equivalent, in terms of clinical outcomes, to the more commonly performed procedure, BPTB-Lemaire. Performing ALL reconstruction in the setting of revision ACLR is therefore safe and effective.

Anterior cruciate ligament reconstruction with bone-patellar tendon-bone graft is associated with higher and earlier return to sports as compared to hamstring tendon graft.

PURPOSE: To study the effect of age, duration of injury, type of graft and concomitant knee injuries on return to sports after anterior cruciate ligament (ACL) reconstruction. METHOD: One-hundred and sixteen athletes underwent ACL reconstruction using either bone-patellar tendon-bone graft (BPTB; n = 58) or semitendinosus-gracilis graft (n = 58), depending upon their random number sequences. Five variables were analyzed in terms of their effect on return to sports-age, type of graft, time interval between injury and surgery, chondral damage and meniscal tears. RESULTS: Fifty-three out of 73 (72.6%) athletes aged between 16 and 25 years and 21/43 (49%) athletes aged between 25 and 40 years returned to sports (p = 0.02). The mean time to return to sports was 9.7 ± 2.1 months and 10.8 ± 1.7 months in athletes aged < 25 years and 25-40 years, respectively (p = 0.04). ACL reconstruction with BPTB graft (43/58) was associated with higher rate of return to sports as compared to hamstring tendon graft (31/58; p = 0.02). The mean duration of return to sports with BPTB and STGPI graft was 9.7 ± 2.0 months and 10.7 ± 2.0 months, respectively (p = 0.02). 29/36 (80.5%) patients operated between 2 and 6 months, 18/29 (62%) operated in < 2 months, and 27/51 (53%) operated after 6 months of injury had returned to sports (p = 0.03). Athletes who were operated within 2 months of the injury were the earliest to return to sports (9.4 ± 2.1 months), followed by those operated within 2-6 months (9.9 ± 1.9 months) and lastly by the ones operated after 6 months of the injury (10.9 ± 2.1 months; p = 0.04). CONCLUSIONS: The rate of return to sports was observed to be higher in athletes younger than 25 years as compared to older athletes (> 25 years). ACL reconstruction with BPTB graft was associated with higher and earlier returns to sports as compared to hamstring graft. The rate of return to sports was highest if surgery was performed between 2 and 6 months after the injury. LEVEL OF EVIDENCE: III.

Tibial tunnel enlargement after anatomic anterior cruciate ligament reconstruction with a bone-patellar tendon-bone graft. Part 1: Morphological change in the tibial tunnel.

BACKGROUND: Three-dimensional (3D) computed tomography (CT) is reliable and accurate imaging modality for evaluating tunnel enlargement after anterior cruciate ligament (ACL) reconstruction. The purpose of this study was to evaluate the tibial tunnel enlargement including the morphological change after anatomic ACL reconstruction with a bone-patellar tendon-bone (BTB) graft using 3D CT models. METHODS: Eighteen patients with unilateral ACL rupture were included. The anatomic rectangular-tunnel (ART) ACL reconstruction with a BTB autograft was performed. 3D CT models of the tibia, the tibial tunnel, and the bone plug at 3 weeks and 1 year after surgery were reconstructed and superimposed using a surface registration technique. The cross-sectional area (CSA) of the tibial tunnel perpendicular to the tunnel axis was evaluated at the aperture and 5, 10, and 15-mm distal from the aperture. The CSA was measured at 3 weeks and 1 year after surgery and compared between the two time points. The locations of the center and the anterior, posterior, medial, and lateral edges of the tunnel footprint were also evaluated based on the coordinate system for the tibial plateau and compared between the two time points. RESULTS: At the aperture, the CSA of the tibial tunnel at 1 year after surgery was significantly larger by 21.9% than that at 3 weeks (P < 0.001). In contrast, the CSA at 1 year was significantly smaller than that at 3 weeks at 10 and 15-mm distal from the aperture (P = 0.041 and < 0.001, respectively). The center of the tunnel footprint significantly shifted postero-laterally with significant posterior shift of the anterior/posterior edges and lateral shift of the lateral edge (P < 0.001). CONCLUSION: The tibial tunnel enlarged at the aperture by 22% 1-year after anatomic ACL reconstruction with a BTB graft, and the tunnel morphology changed in a postero-lateral direction at the aperture and into conical shape inside the tunnel.

How to Avoid Graft-Tunnel Length Mismatch in Modified Transtibial Technique for Anterior Cruciate Ligament Reconstruction Using Bone-Patellar Tendon-Bone Graft.

BACKGROUND: We conducted this study to determine the optimal length of patellar and tibial bone blocks for the modified transtibial (TT) technique in anterior cruciate ligament (ACL) reconstruction using the bone-patellar tendon-bone (BPTB) graft. METHODS: The current single-center, retrospective study was conducted in a total of 64 patients with an ACL tear who underwent surgery at our medical institution between March 2015 and February 2016. After harvesting the BPTB graft, we measured its length and that of the patellar tendon, patellar bone block, and tibial bone block using the arthroscopic ruler and double-checked measurements using a length gauge. Outcome measures included the length of tibial and femoral tunnels, inter-tunnel distance, length of the BPTB graft, patellar tendon, patellar bone block, and tibial bone block and graft-tunnel length mismatch. The total length of tunnels was defined as the sum of the length of the tibial tunnel, inter-tunnel distance and length of the femoral tunnel. Furthermore, the optimal length of the bone block was calculated as (the total length of tunnels - the length of the patellar tendon) / 2. We analyzed correlations of outcome measures with the height and body mass index of the patients. RESULTS: There were 44 males (68.7%) and 20 females (31.3%) with a mean age of 31.8 years (range, 17 to 65 years). ACL reconstruction was performed on the left knee in 34 patients (53%) and on the right knee in 30 patients (47%). The optimal length of bone block was 21.7 mm (range, 19.5 to 23.5 mm). When the length of femoral tunnel was assumed as 25 mm and 30 mm, the optimal length of bone block was calculated as 19.6 mm (range, 17 to 21.5 mm) and 22.1 mm (range, 19.5 to 24 mm), respectively. On linear regression analysis, patients' height had a significant correlation with the length of tibial tunnel (p = 0.003), inter-tunnel distance (p = 0.014), and length of patellar tendon (p < 0.001). CONCLUSIONS: Our results indicate that it would be mandatory to determine the optimal length of tibial tunnel in the modified TT technique for ACL reconstruction using the BPTB graft. Further large-scale, multi-center studies are warranted to establish our results.

Superior return to sports rate after patellar tendon autograft over patellar tendon allograft in revision anterior cruciate ligament reconstruction.

PURPOSE: After revision anterior cruciate ligament reconstruction (ACLR), the rate of return to the pre-injury type of sport (RTS type) is low and graft choice might be an important factor. The aim of this study was to determine whether there is a difference in outcome after revision ACLR using a patellar tendon allograft compared to an ipsilateral patellar tendon autograft. It was hypothesized that the rate of RTS type using an ipsilateral patellar tendon autograft will be superior to using patellar tendon allograft. METHODS: The design is a retrospective cohort study. Inclusion criteria were patients who underwent revision ACLR with a minimum follow-up of 1 year after revision using a patellar allograft or ipsilateral autograft. Primary study parameter was rate of RTS type. Secondary study parameters were RTS level, subscores of the KOOS, the IKDCsubjective, the Tegner score and reasons for no RTS. RESULTS: Eighty-two patients participated in this study (36 allografts and 46 autografts). In patients with a minimum follow-up of 1 year, rate of RTS type was 51.4% for the patellar tendon allograft and 62.8% for the patellar tendon autograft group (n.s.). In patients with a minimum follow-up rate of 2 years, rate of RTS type was 43.3 versus 75.0%, respectively (p = 0.027). No differences in secondary study parameters were found. In patients with a minimum follow-up of 1 year, rate of RTS type was significantly higher (p = 0.025) for patients without anxiety compared to patients who were anxious to perform certain movements. CONCLUSION: After a minimum follow-up of 2 years, rate of RTS type is in favour of using an ipsilateral patellar tendon autograft when compared to using a patellar tendon allograft in patients undergoing revision ACLR; after a minimum follow-up of 1 year, no significant difference was found. In revision ACLR, the results of this study might influence graft choice in favour of autologous graft when the use of an allograft or autograft patellar tendon is considered. LEVEL OF EVIDENCE: III.

Effects of initial graft tension on femoral tunnel widening after anatomic anterior cruciate ligament reconstruction using a bone-patellar tendon-bone graft.

INTRODUCTION: The effects of initial graft tension upon tunnel widening (TW) following anatomic anterior cruciate ligament (ACL) reconstruction have not been elucidated. The purpose of this study was to retrospectively investigate the effect of two different graft-tensioning protocols upon femoral TW following anatomic ACL reconstruction using a bone-patellar tendon-bone (BPTB) graft and a three-dimensional (3D) computed tomography (CT) model. METHODS: Forty-three patients who underwent isolated ACL reconstruction using BPTB grafts were included in this study. In 18 out of the 43 patients, the graft was fixed at full knee extension with manual maximum pull (Group H). These patients were compared with 25 patients in whom the BPTB graft was fixed at full knee extension with 80-N pull (Group L). Tunnel aperture area was measured using 3D CT 1 week and 1 year postoperatively, thus enabling us to calculate the percentage change in the area of femoral tunnel aperture. Clinical assessment was performed 1 year postoperatively, corresponding to the time period of CT assessment, and involved the evaluation of Lysholm score, anterior knee stability using a KneeLax3 arthrometer, and the pivot-shift test. RESULTS: When measured at 1 year postoperatively, the mean area of the femoral tunnel aperture had increased by 78.6 ± 36.8% in Group H when compared with at 1 week postoperatively, whereas that of Group L had increased by 27.7 ± 32.3%. Furthermore, TW (%) in Group H was significantly greater than that of Group L (P < 0.001). No significant differences were detected between the two groups with regard to any of the clinical outcomes evaluated. CONCLUSION: High levels of initial graft tension resulted in greater TW of the femoral tunnel aperture following anatomical ACL reconstruction using BPTB grafts. However, such levels of graft tension did not affect clinical outcome.

Ruptura traumática aguda del tendón del cuádriceps tratado con sutura de alambre transpatelar / Acute traumatic rupture of the quadriceps tendon treated with transpatellar wire suture

la ruptura traumática aguda del tendón del cuádriceps es una entidad poco frecuente con una incidencia de 1,37/100 000 pacientes por año. Los hombres son los más afectados y la edad media de aparición ronda los 50 años. La cirugía ofrece los mejores resultados. Objetivo: presentar un paciente con ruptura traumática aguda del tendón del cuádriceps derecho, con evolución favorable luego de una reparación primaria precoz con sutura transpatelar de alambre. Reporte de caso: paciente masculino de 58 años de edad, con antecedentes de diabetes mellitus tipo II, que sufrió caída de sus pies. Acudió al servicio de urgencias con dolor intenso a nivel de la rodilla derecha, e imposibilidad para la marcha. A la exploración física se encontró impotencia absoluta para la extensión de la pierna derecha y signo del surco en la zona del tendón del cuádriceps. En la ultrasonografía de la rodilla derecha se apreció una solución de continuidad total del tendón del cuádriceps, a nivel del polo superior de la rótula lo que corroboró el diagnóstico de una ruptura traumática aguda del tendón del cuádriceps derecho. Se decidió tratamiento quirúrgico que consistió en perforaciones en la rótula y reinserción del tendón mediante alambres de acero, con buena evolución clínica Conclusiones: la reparación primaria precoz con sutura transpatelar de alambre en la ruptura traumática aguda del tendón del cuádriceps es un proceder quirúrgico efectivo cuando se realiza en los primeros diez días de la lesión(AU)

Ruptura traumática aguda del tendón del cuádriceps tratado con sutura de alambre transpatelar / Acute traumatic rupture of the quadriceps tendon treated with transpatellar wire suture

Fundamento: La ruptura traumática aguda del tendón del cuádriceps es una entidad poco frecuente con una incidencia de 1,37/100 000 pacientes por año. Los hombres son los más afectados y la edad media de aparición ronda los 50 años. La cirugía ofrece los mejores resultados. Objetivo: Presentar un paciente con ruptura traumática aguda del tendón del cuádriceps derecho, con evolución favorable luego de una reparación primaria precoz con sutura transpatelar de alambre. Reporte de caso: Paciente masculino de 58 años de edad, con antecedentes de diabetes mellitus tipo II, que sufrió caída de sus pies. Acudió al servicio de urgencias con dolor intenso a nivel de la rodilla derecha, e imposibilidad para la marcha. A la exploración física se encontró impotencia absoluta para la extensión de la pierna derecha y signo del surco en la zona del tendón del cuádriceps. En la ultrasonografía de la rodilla derecha se apreció una solución de continuidad total del tendón del cuádriceps, a nivel del polo superior de la rótula lo que corroboró el diagnóstico de una ruptura traumática aguda del tendón del cuádriceps derecho. Se decidió tratamiento quirúrgico que consistió en perforaciones en la rótula y reinserción del tendón mediante alambres de acero, con buena evolución clínica Conclusiones: La reparación primaria precoz con sutura transpatelar de alambre en la ruptura traumática aguda del tendón del cuádriceps es un proceder quirúrgico efectivo cuando se realiza en los primeros diez días de la lesión.

Background: The acute traumatic rupture of the quadriceps tendon is a rare diseases with an incidence of 1.37 / 100 000 patients per year. Men are the most affected and the average age of appearance is around 50 years old. Surgery offers the best results. Objective: to present a patient with acute traumatic rupture of the right quadriceps tendon, with a favorable evolution after an early primary repair with transpatellar wire suture. Case report: a 58-year-old male patient with a personal history of type II diabetes mellitus, who suffered a fall in his feet. He arrived to the emergency room with severe pain in the right knee and impossibility to walk. At physical examination showed an absolute impotence for the extension of the right leg and a depression sign in the area of ​​the quadriceps tendon. In the right knee ultrasonography, a complete continuity solution of the quadriceps tendon was observed at the level of the superior pole of the patella, which corroborated the diagnosis of an acute traumatic rupture of the right quadriceps tendon. Surgical treatment consisted of perforations in the patella and reinsertion of the tendon through steel wires, with good clinical evolution Conclusions: early primary repair with transpatellar wire suture in acute traumatic rupture of the quadriceps tendon is an effective surgical procedure when it is done in the first ten days of the lesion.

Ruptura traumática aguda del tendón del cuádriceps tratado con sutura de alambre transpatelar / Acute traumatic rupture of the quadriceps tendon treated with transpatellar wire suture

Fundamento: La ruptura traumática aguda del tendón del cuádriceps es una entidad poco frecuente con una incidencia de 1,37/100 000 pacientes por año. Los hombres son los más afectados y la edad media de aparición ronda los 50 años. La cirugía ofrece los mejores resultados. Objetivo: Presentar un paciente con ruptura traumática aguda del tendón del cuádriceps derecho, con evolución favorable luego de una reparación primaria precoz con sutura transpatelar de alambre. Reporte de caso: Paciente masculino de 58 años de edad, con antecedentes de diabetes mellitus tipo II, que sufrió caída de sus pies. Acudió al servicio de urgencias con dolor intenso a nivel de la rodilla derecha, e imposibilidad para la marcha. A la exploración física se encontró impotencia absoluta para la extensión de la pierna derecha y signo del surco en la zona del tendón del cuádriceps. En la ultrasonografía de la rodilla derecha se apreció una solución de continuidad total del tendón del cuádriceps, a nivel del polo superior de la rótula lo que corroboró el diagnóstico de una ruptura traumática aguda del tendón del cuádriceps derecho. Se decidió tratamiento quirúrgico que consistió en perforaciones en la rótula y reinserción del tendón mediante alambres de acero, con buena evolución clínica Conclusiones: La reparación primaria precoz con sutura transpatelar de alambre en la ruptura traumática aguda del tendón del cuádriceps es un proceder quirúrgico efectivo cuando se realiza en los primeros diez días de la lesión.

Background: The acute traumatic rupture of the quadriceps tendon is a rare diseases with an incidence of 1.37 / 100 000 patients per year. Men are the most affected and the average age of appearance is around 50 years old. Surgery offers the best results. Objective: to present a patient with acute traumatic rupture of the right quadriceps tendon, with a favorable evolution after an early primary repair with transpatellar wire suture. Case report: a 58-year-old male patient with a personal history of type II diabetes mellitus, who suffered a fall in his feet. He arrived to the emergency room with severe pain in the right knee and impossibility to walk. At physical examination showed an absolute impotence for the extension of the right leg and a depression sign in the area of ​​the quadriceps tendon. In the right knee ultrasonography, a complete continuity solution of the quadriceps tendon was observed at the level of the superior pole of the patella, which corroborated the diagnosis of an acute traumatic rupture of the right quadriceps tendon. Surgical treatment consisted of perforations in the patella and reinsertion of the tendon through steel wires, with good clinical evolution Conclusions: early primary repair with transpatellar wire suture in acute traumatic rupture of the quadriceps tendon is an effective surgical procedure when it is done in the first ten days of the lesion.