{
  "abstract": "Background Complete avulsion injuries of the proximal hamstring, which necessitate surgical intervention, present challenges due to their close relationship with the sciatic nerve. This research aims to quantify the frequency and characteristics of neurological impairments following injury and surgical repair, differentiating between those caused by trauma and those resulting from the procedure itself. Currently, there is a lack of comprehensive neurophysiological studies on sciatic nerve damage in this region, and interpreting MRI findings in the affected muscles remains difficult.Methods Eighteen patients with MRI-confirmed proximal hamstring avulsions underwent surgical reattachment. To monitor nerve injury progression, electromyography (EMG) and MRI assessments were conducted over a 12-month period. The primary objective was to determine the origin of nerve injuries, while secondary goals included evaluating their progression and linking findings to patient outcomes.Results Among the 18 participants, 5 had nerve injuries before surgery, while 3 developed iatrogenic nerve damage afterward, almost exclusively in the hamstring muscles. SHORE scores did not show a significant difference between patients with normal versus abnormal EMG findings, though those with abnormal EMG exhibited a trend toward more neurological symptoms. Greater tendon retraction correlated with more severe EMG abnormalities in the hamstring muscles.Conclusion Neurological involvement and recovery following proximal hamstring avulsion injuries vary among patients. MRI can aid in predicting nerve injury severity by measuring tendon retraction, with a nerve-at-risk distance (NARD) exceeding 5 cm suggesting a higher likelihood of neurotrauma. However, the long-term clinical effects of underlying nerve damage, particularly in athletes, warrant further research.",
  "authors": [
    {
      "affiliations": [
        "Orthopaedics, North Shore Orthopaedic and Sports Medicine Centre, Sydney, NSW, Australia"
      ],
      "name": "David Wood"
    },
    {
      "affiliations": [
        "Orthopaedics, North Shore Orthopaedic and Sports Medicine Centre, Sydney, NSW, Australia"
      ],
      "name": "Milos Spasojevic"
    },
    {
      "affiliations": [
        "Research Department, Australian Institute of Musculoskeletal Research, Sydney, NSW, Australia"
      ],
      "name": "Sofie French"
    },
    {
      "affiliations": [
        "Orthopaedics, North Shore Orthopaedic and Sports Medicine Centre, Sydney, NSW, Australia"
      ],
      "name": "Ran Wei"
    },
    {
      "affiliations": [
        "Neurology, Royal North Shore Hospital, Sydney, NSW, Australia"
      ],
      "name": "Jordan Weastell"
    },
    {
      "affiliations": [
        "Radiology, Mater Hospital, Sydney, NSW, Australia"
      ],
      "name": "Sebastian Fung"
    },
    {
      "affiliations": [
        "Royal North Shore Hospital and University of Sydney, St Leonards, NSW, Australia"
      ],
      "name": "Karl Ng"
    }
  ],
  "title": "3639 A comparative study of neurological outcomes after proximal hamstring avulsion injury and surgical repair: distinguishing traumatic and iatrogenic causes",
  "uid": "80e187eb-3a83-587f-b562-2f1093c61cf7"
}