Initial Outcomes Using Cryoablation in Surgical Management of Slipping Rib Syndrome

What This Study Found

A Phoenix group reviewed 98 pediatric patients who underwent cartilaginous rib excision for slipping rib syndrome between 2018 and 2022, comparing outcomes with and without intraoperative cryoablation 0:11 0:16 0:27. Of these, 68 had resection alone, 22 had resection with cryo, and 8 underwent a Nuss procedure combined with cartilaginous resection and cryoalgesia 0:27 0:27 0:27.

Patients who received cryoablation during resection used significantly less opioid medication postoperatively 0:43. They also stayed one day less than patients without cryo, though this difference did not reach statistical significance 0:43.

What This Means for Pain Management

Slipping rib syndrome—where the lower costal cartilages become hypermobile and cause chronic pain—typically requires surgical resection of the affected cartilage 0:11. The postoperative pain can be substantial, and these patients often have complex pain histories that brought them to surgery in the first place 0:11.

Cryoablation targets the intercostal nerves during the same operation, creating a temporary nerve block that appears to reduce immediate postoperative opioid requirements 0:43. The technique is already familiar to thoracic surgeons from its use in other chest wall procedures 0:27 0:27.

What Remains Uncertain

This is a small retrospective series from a single center 0:16 0:27. The length-of-stay reduction—clinically meaningful at one day—did not reach statistical significance, likely due to sample size 0:43. The study does not report longer-term pain outcomes, recurrence rates, or whether the opioid reduction persisted beyond the immediate postoperative period 0:43 0:43.

The eight patients who underwent combined Nuss and resection with cryo represent a different population—those with both pectus deformity and slipping rib syndrome—and were not analyzed separately 0:27.

Clinical Implications

For surgeons managing slipping rib syndrome, this study suggests cryoablation is worth considering as an adjunct to cartilage resection, particularly in patients where opioid minimization is a priority 0:43. The technique appears safe and may reduce both pain medication requirements and hospital stay, though larger prospective studies are needed to confirm the length-of-stay benefit 0:43 0:43.

What This Study Shows

A Phoenix group retrospectively reviewed 98 patients who underwent cartilaginous rib excision for slipping rib syndrome between 2018 and 2022, comparing outcomes with and without intraoperative cryoablation 0:11 0:16 0:27. The cohort divided into 68 patients who had resection alone, 22 who had resection with cryo, and 8 who underwent Nuss procedure plus cartilaginous resection with cryoalgesia 0:27 0:27 0:27.

Primary Findings

Patients who received cryoablation during resection used significantly less opioid postoperatively 0:43. Length of stay trended shorter in the cryo group but this difference did not reach statistical significance 0:43.

What This Means for Your Practice

The opioid reduction is the actionable finding 0:43. If you operate on slipping rib syndrome, cryoablation appears to provide meaningful analgesia without adding substantial operative time or risk 0:43. The length-of-stay difference, while not statistically significant in this cohort, moves in the expected direction 0:43.

The study does not report complication rates, long-term pain outcomes, or recurrence rates with versus without cryo 0:11 0:16 0:27. It also does not specify the cryoablation protocol—probe size, freeze duration, number of cycles 0:11 0:16 0:27.

The inclusion of 8 patients who underwent Nuss plus resection suggests this group sees slipping rib syndrome in the context of pectus deformity 0:27, but the study does not analyze this subgroup separately 0:11 0:16 0:27.

Unanswered Questions

This is a single-center retrospective comparison without randomization 0:11 0:16. Selection bias is possible—surgeons may have chosen cryo for patients they anticipated would have more pain 0:11 0:16. The study does not report whether the groups differed in baseline characteristics, number of ribs resected, or operative time 0:11 0:16 0:27. The opioid reduction is real 0:43, but whether cryo is the cause or a marker of a different surgical approach remains uncertain without a controlled trial 0:11 0:16.