The dangers of lithotomy positioning in the operating room: case report of bilateral lower extremity compartment syndrome after a 90-minutes surgical procedure
© The Author(s). 2016
Received: 17 May 2016
Accepted: 12 July 2016
Published: 26 July 2016
Lower extremity acute compartment syndrome after gynecologic surgery in the lithotomy position is a rare, yet potentially devastating complication. A high level of suspicion is paramount for early recognition and mitigation of acute compartment syndrome originating from prolonged surgery in lithotomy position.
A 23-year-old female, gravida 1, para 0, underwent a laparoscopic salpingectomy for a ruptured ectopic pregnancy. Surgical time was 90 min. Postoperatively, the patient developed acute compartment syndrome of both legs necessitating emergent bilateral four-compartment fasciotomies, with repeated returns to the operating room for 2nd look procedures and delayed wound closures. The patient regained full function within 3 months and returned to an unrestricted baseline activity level.
Technical diligence in applying a lithotomy position is paramount for preventing postoperative lower extremity compartment syndrome. A high level of suspicion for this severe complication in conjunction with early recognition and immediate surgical management can mitigate long-term adverse sequelae and improve postoperative outcomes.
Acute compartment syndrome (ACS) of the lower extremities is a known complication after surgical positioning in lithotomy or hemilithotomy position [1–3]. As most gynecological procedures require a lithotomy position by default, these patients are at particular risk for developing postoperative compartment syndrome, particularly after prolonged surgical procedures lasting beyond 2–4 h [4, 5]. Although a rare complication, delayed diagnosis of ACS can lead to irreversible muscle necrosis with the potential for debilitating lower extremity dysfunction and a high risk for requiring delayed lower limb amputations [6, 7]. Thus, prompt recognition and surgical intervention are paramount for mitigating this severe postoperative complication [8–10]. The large bulk of the existing literature on ACS secondary to lithotomy positioning are case reports either of prolonged surgical procedures beyond 4 h, or restricted to unilateral well-leg compartment syndrome [11, 12]. In this report, we describe the rare case of a young 23-year old patient who developed bilateral lower extremity ACS following a routine 90-min laparoscopic salpingectomy in lithotomy position for an ectopic pregnancy. Tips and tricks on how to prevent and mitigate this severe intraoperative complication are discussed.
We present a rare case of bilateral lower extremity acute compartment syndrome that developed in a healthy 23-year-old female after undergoing a laparoscopic salpingectomy for ruptured ectopic pregnancy in the usual lithotomy position. This case highlights a rare complication that has been previously associated with lithotomy or hemilithotomy positioning [2, 5, 12, 13]. Lower extremity ACS is a pathologic condition in which increased tissue pressure within a closed osseofascial space compromises blood circulation and normal function of tissues within the compartment leading to tissue hypoxia and necrosis [8, 14]. If left untreated, patients with ACS can develop muscle contracture, sensory deficits, paralysis, possible need for limb amputation, and potentially multi-system organ failure secondary to crush syndrome [15, 16]. The osseofascial lining of the four lower extremity compartments (anterior, lateral, superficial and deep posterior) form an enclosed environment of muscle, blood vessels and nerves with limited ability to expand or accommodate increased volume or pressure [8, 17]. ACS in the postoperative state occurs as a result of intraoperative compression with a prolonged decrease in arterial pressure and/or increase in venous pressure, followed by reperfusion . Local ischemia can subsequently damage endothelial cells resulting in leakage of proteins and fluid into the interstitial space. The subsequent increase in interstitial pressure elevates compartmental pressures, thus perpetuating the cycle of hypoperfusion and tissue ischemia . Specifically, in the lithotomy position, ischemia occurs from compressive forces of the external leg holsters and diminished blood flow from leg elevation and kinking of the popliteal artery, leading to ischemia/reperfusion injury with subsequent compartment syndrome . When the lower extremities are taken out of lithotomy position and elevation, limb reperfusion occurs and can lead to injury with the formation of oxygen free radicals and cytokines that perpetuate endothelial damage and interstitial edema . In addition to lithotomy position, other risk factors associated with ACS after surgery include: ankle dorsiflexion, Trendelenburg position, leg holders, length of surgery greater than 2 h, intraoperative hypotension or hypovolemia, and epidural analgesia . Bauer and colleagues recently published two articles documenting cases of lower extremity ACS following gynecologic surgery in the lithotomy position and found that the vast majority of ACS cases occurred following procedures lasting longer than 4 h [4, 12]. Other studies have demonstrated that calf compartment pressure increases at a rate of 1.1 mmHg per hour in the lithotomy position . In addition, elevation of the leg above heart level (“high” lithotomy positon) has been associated with increased risk of compartment syndrome . Intermittent pneumatic compressive devices used for the prevention of deep venous thrombosis intraoperatively, as applied in the patient presented in this case report, have also been identified as causative factors for ACS . We postulate that lithotomy with adjunctive Trendelenburg position was likely the contributory root cause of bilateral lower extremity ACS in the young 23-old patient described in this case report. Multiple technical tricks have been described to prevent ACS in lithotomy position, including intraoperative repositioning of the legs, avoiding pressure in the popliteal fossa and kinking of the popliteal artery by avoiding knee flexion beyond 90° [1, 23]. Lower extremity ACS remains a clinical diagnosis, and immediate recognition and surgical management are paramount in avoiding long-term impairment and poor outcomes . The most common clinical symptom is represented by uncontrolled pain out of proportion and exacerbated pain by passive stretch of the toes and ankle joint . Measurement of the compartment pressure can aid in the diagnosis, albeit there is dispute among orthopedic surgeons regarding the pressure threshold for the diagnosis of ACS and subsequent need for fasciotomy. The most effective method of diagnosis of ACS remains a clinical diagnosis requiring a high level of suspicion by the treating physician. Given the short duration of our patient’s procedure and lack of risk factors with the exception of lithotomy position and her full recovery after immediate recognition and surgical management, our case highlights the imperative of understanding the pathophysiology of ACS in lithotomy position and raising a high level of suspicion in a patient with postoperative calf pain after gynecological procedures.
ACS is a rare but serious complication from surgical procedures performed in the lithotomy or hemilithotomy position. The greatest risk factor for major sequelae from ACS is failure to recognize and manage this condition in a timely fashion when a postoperative patient presents with increasing leg pain after surgery. Recommendations to prevent intraoperative development of a compartment syndrome include correct patient positioning [1, 23], utilizing well-padded stirrups for the lower extremity, to limit the duration in lithotomy position whenever possible, and to reposition and mobilize the knees and legs if procedures extend beyond 2 h of surgical time.
ACS, acute compartment syndrome; CK, creatinine kinase
The publication costs for this article were covered in full by a grant from the Colorado Physician Insurance Company (COPIC) to Philip F. Stahel, MD.
COPIC had no influence on authorship or scientific content of this article.
Availability of data and materials
NS carried out the literature review and drafting of the first version of the initial manuscript. FBW, JJM, and PSF provided critical revisions and drafting of the final version of the manuscript. SF and PFS were responsible for the surgical management of the patient described in this report. All authors read and approved the final version of this manuscript prior to submission.
The authors declare that they have no competing interests.
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Written informed consent was obtained from the patient for publication of this case report.
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