METHODS: A 12-year-old girl presented with significant right elbow pain following a fall during soccer which caused an osseous triceps avulsion injury and nondisplaced type II Salter-Harris radial neck fracture. The patient was treated with successful open repair utilizing suture anchor fixation, resulting in full return of function and return to previous activities.
CONCLUSIONS: Timely and accurate diagnosis and treatment of displaced triceps sleeve avulsion injuries is critical and can result in excellent patient outcomes and return to previous functional level. This unique case contributes to the diagnosis and management of this rare condition in pediatric populations.

Tibial tubercle avulsion fractures (TTAFs) are rare but typical in children and adolescents and Osgood-Schlatter disease (OSD) may be involved in their pathogenesis. However, few publications have reported the relationship between OSD and TTAF. A 16-year-old healthy male adolescent presented with pain, swelling and limited range of motion of the right knee following sudden acceleration while running. Based on the radiographic evidence, the patient was diagnosed with an avulsion fracture of the right tibial tubercle and OSD. Open reduction and internal fixation were performed using two cannulated screws and two Kirschner wires. The patient returned to preinjury activity levels at the 12-month follow-up postoperatively. This case report aimed to highlight this unique injury pattern. For patients with TTAFs, not only should the fracture be treated, but the cause of the fracture, such as OSD, should also be given appropriate treatment.

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BACKGROUND: Published literature describes slipped capital femoral epiphysis as a complication of recombinant human growth hormone (rhGH) therapy that may be related to decreased physeal strength. The purpose of the current investigation was to utilize a case-control study design to determine whether a greater proportion of pediatric patients sustaining physeal avulsion fractures of the proximal tibia were undergoing rhGH therapy at the time of injury compared with a cohort of matched controls.
METHODS: A case-control design study design was utilized. Patients 4 to 18 years of age with proximal tibial physeal avulsion fractures (cases) or midshaft tibial fractures (controls) at our institution from February 1, 2016, to May 4, 2023, were identified. Cases and controls were matched 1:1 on the basis of age (within 1 year), sex, and body mass index (within 3 kg/m 2 ). A total of 132 patients were included in the analysis (mean age, 13 ± 2 years). rhGH exposure was compared using conditional logistic regression with Firth correction.
RESULTS: We found that 11% of the patients with a proximal tibial physeal avulsion fracture were on rhGH therapy at the time of injury compared with 0% of patients with midshaft tibial fractures (odds ratio [OR], 15.0; 95% confidence interval [CI], 1.8 to 1,946.7; p = 0.007). There was no significant difference in the proportion of sports-related injuries between cases (70%) and controls (67%) (OR, 1.15; 95% CI, 0.55 to 2.39; p = 0.85). Among subjects with proximal tibial avulsion fractures, the proportion requiring surgery did not differ significantly between patients receiving and those not receiving rhGH therapy (43% versus 41%, respectively; p = 0.99).
CONCLUSIONS: This study demonstrates that the proportion of subjects who sustained proximal tibial physeal avulsion fractures and were receiving recombinant human growth hormone therapy at the time of injury was significantly greater than that of an age, sex, and body mass index-matched control group with midshaft tibial fractures (11% versus 0%, respectively, representing 15-times greater odds of exposure). This quantifies a previously unreported serious orthopaedic complication associated with rhGH therapy.
METHODS: Prognostic Level III . See Instructions for Authors for a complete description of levels of evidence.

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The present study reports a rare case of avulsion fracture of the tibial tuberosity in an adolescent. A 14-year-old male patient sprained his left knee during a soccer match. At the first emergency-room visit, he presented pain in his left knee, 2 +/4+ edema, and inability to walk and flex the affected knee, but no neurovascular changes or signs of compartment syndrome. Radiographs revealed a physeal fracture at the left proximal tibia, classified by Ogden, Tross and Murphy, and modified by Ryu and Debenham, as type IV, and complemented by Aerts et al. as type IV-B. Immobilization was performed with a plaster cast from the inguinal to malleolar regions, followed by analgesia. The patient was operated on the next day, when open reduction and internal fixation using 4.5-mm cannulated screws were performed. The patient was discharged one day after surgery, with plaster cast immobilization and load restraint for four weeks, and bone consolidation was radiologically confirmed three months after the procedure. The patient evolved with a range of motion similar to that of the contralateral limb, no length discrepancy in the lower limbs, and no complaints after one year of follow-up.

Background and objectives: Isolated tibial tuberosity avulsion fractures are exceptionally uncommon among adults, with limited instances documented in published literature. Here, we describe a case of an isolated tibial tuberosity avulsion fracture in an adult that was treated successfully with the suture bridge repair technique. Patient concerns: A 65-year-old female visited the outpatient department with left knee pain after a slip and fall. Lateral radiographs and sagittal MR images of the left knee revealed the tibial tuberosity avulsion fracture, but the fracture line did not extend into the knee joint space. Surgical intervention was performed on the patient\'s knee using an anterior midline approach, involving open reduction and internal fixation. The avulsed tendon was grasped and pulled, and an appropriate suture location was identified. Using a suture hook, the suture was guided through the patellar tendon as near to its uppermost point of the fragment as achievable, and tied over tendon. A single suture limb from each anchor was fastened over the tibial tuberosity to the distally positioned foot print anchor, effectively anchoring the tibial tuberosity using the suture bridge technique. The patient started walking on crutches after one week and was able to walk independently with a brace after two weeks from the operation day. After three months, the patient had regained her mobility to the level prior to the injury and exhibited painless active range of motion from 0 to 130 degrees. Hardware positioning and bony union were maintained at the one-year follow-up. Conclusions: In our case, the open suture bridge fixation method for tibial tuberosity avulsion fractures produced satisfactory results. Open suture bridge fixation may be considered for isolated tibial tuberosity avulsion fractures in adults, especially when the avulsion tip is too small for screw fixation.

Acute distal patella tendon avulsion from the tibial tubercle (TT) is a relatively rare injury that is usually described in the adolescents or elderly population in their 7th or 8th decades. Bifocal avulsion fractures of the patella tendon from the TT and the distal pole of the patella are exceptionally rare in adults. In this case report, we present a 52-year-old healthy old male who was treated for bifocal avulsion of the patellar tendon with open reduction and internal fixation augmented with two ULTRATAPE sutures. To our knowledge, this is the first case report to describe this injury in a healthy middle-aged patient.

Background and Objectives: Type V tibial tubercle avulsion fractures are extremely rare; therefore, information on them remains limited. Furthermore, although these fractures are intra-articular, to the best of our knowledge, there are no reports on their assessment via magnetic resonance imaging (MRI) or arthroscopy. Accordingly, this is the first report to describe the case of a patient undergoing detailed evaluation via MRI and arthroscopy. Case Presentation: A 13-year-old male adolescent athlete jumped while playing basketball, experienced discomfort and pain at the front of his knee, and fell down. He was transported to the emergency room by ambulance after he was unable to walk. The radiographic examination revealed a Type Ⅴ tibial tubercle avulsion fracture that was displaced. In addition, an MRI scan revealed a fracture line extending to the attachment of the anterior cruciate ligament (ACL); moreover, high MRI intensity and swelling due to ACL were observed, suggesting an ACL injury. On day 4 of the injury, open reduction and internal fixation were performed. Furthermore, 4 months after surgery, bone fusion was confirmed, and metal removal was performed. Simultaneously, an MRI scan obtained at the time of injury revealed findings suggestive of ACL injury; therefore, an arthroscopy was performed. Notably, no parenchymal ACL injury was observed, and the meniscus was intact. The patient returned to sports 6 months postoperatively. Conclusion: Type V tibial tubercle avulsion fractures are known to be extremely rare. Based on our report, we suggest that MRI should be performed without hesitation if intra-articular injury is suspected.

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