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Combined endoscopic and mini-open repair of chronic complete proximal hamstring tendon avulsion: a novel approach and short-term outcomes.

ABSTRACT: To evaluate the outcome of a novel, combined endoscopic and mini-open repair (CEMR) of a chronic complete retracted proximal hamstring tendon avulsion (PHA). A retrospective case series of a single-surgeon database for all patients, with a minimum of 1-year follow-up, who underwent CEMR between July 2015 and September 2019 was performed. Patients were evaluated for their functional outcome using the Perth Hamstring Assessment Tool (PHAT). At the latest follow-up, patients were evaluated for their muscle strength, subjective satisfaction and post-operative complications. Twelve patients who underwent endoscopic surgery for chronic PHA were identified, of which seven patients underwent CEMR. After exclusion of one patient from the study due to an open claim for health insurance, six patients (five males) with a mean age of 48 years (range 20-61 years) were evaluated. The mean time from injury to surgery was 12 months (range 2-43 months). At a mean follow-up of 28 months (range 12-55 months), the average PHAT score was 73 (range 70-80). The mean subjective activity level percentage improved from 34 (range 20-50) pre-surgery to 81 (range 75-90) post-surgery. The mean strength of the quadriceps, hamstring at 30°, and hamstring at 90° of the operated leg compared to the uninjured leg did not differ significantly. One patient underwent adhesiolysis 1 year after the index procedure for treatment of subcutaneous adhesions. CEMR is a viable and safe option for the treatment of chronic complete proximal hamstring tears, with good to excellent short-term functional outcome. Level of evidence: IV.

SUBMITTER: Factor S

PROVIDER: S-EPMC8349587 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:Ischial avulsion fractures classically occur in the pediatric population and are relatively uncommon. These injuries are treated conservatively; however, in cases where there is greater than 2 cm of displacement, surgical intervention is recommended. In some cases, displaced fractures are either misdiagnosed or proper treatment is neglected, and patients who transition into adulthood are left with chronic nonunions that can become a source of pain and disability. Here we present a surgical technique for a chronic ischial avulsion fracture nonunion that is excised, and the hamstring tendons are then primarily repaired to the ischium using suture anchors. Technique Video Video 1 This is a video for the surgical intervention for a patient with a chronic right sided ischial avulsion fracture. The patient is placed in the prone position with all bony prominences padded. After a standard sterile prep and drape of the right lower extremity, an 8 to 10 cm incision is made in the gluteal crease, overlying the right-sided ischium. Electrocautery is used to reveal the underlying gluteal fascia. The gluteal fascia is incised using dissecting scissors. A Schnitt is used to open the interval inferior to the gluteus maximus muscle, and a large retractor is placed. A sciatic neurolysis is performed. The chronic avulsion fracture is revealed using electrocautery. A combination of electrocautery and a cobb elevator is used to free the bony fragment. After removal, the eburnated surface of the ischium is revealed. A combination of curettes and osteotomes are used to create a bleeding bone bed on the native ischium. Next, two 2.8 mm Q-fix (Smith and Nephew, Andover, MA) double-loaded all-suture anchors are placed into the native ischium. From each anchor, 1 suture limb from 1 pair is passed through the hamstring tendon in a locking fashion while the other is left free. From the other suture pair from the same anchor, one limb is passed in a modified Mason-Allen technique, and the other limb is left free. This is repeated for the other anchor. Using the free limbs of the anchors, the tendon is delivered to the ischium. The corresponding suture limbs are tied, and the free ends are cut with a knife. After copious irrigation a multilayer closure is performed. Dermabond is placed on the skin and a dry sterile dressing. After surgery the patient is made flat foot weightbearing in a hip orthosis and is started on chemical anticoagulation. At the first postoperative visit the wound is evaluated, and an X-ray film is obtained. (Soundtrack: Morning Routine by Ghostrifter Official | https://soundcloud.com/ghostrifter-official Music promoted by https://www.chosic.com/free-music/all/Creative Commons CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0/)

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Combined endoscopic and mini-open repair of chronic complete proximal hamstring tendon avulsion: a novel approach and short-term outcomes.

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