FIGURE 1.

FIGURE 2.

FIGURE 3.

FIGURE 4.

Twenty-four studies reported 30 patients with posterior interosseous palsy due to lipomas
| Patient | Ref | Year | Age (years) | Sex | Onset | Duration (months) | Lipoma | Recovery |
|---|---|---|---|---|---|---|---|---|
| 1 | Vikas14 | 2020 | 54 | F | Progressive | 5 | Parosteal | Complete |
| 2 | Allagui15 | 2014 | 28 | F | Progressive | 6 | Intramuscular | Complete |
| 3 | Maldonado16 | 2017 | 78 | M | Progressive | 8 | Parosteal | Incomplete |
| 4 | Maldonado16 | 2017 | 65 | F | Progressive | 30 | Parosteal | Incomplete |
| 5 | Yamamoto17 | 2016 | 60 | F | No symptoms | ? | Intermuscular | Complete |
| 6 | Rishab18 | 2021 | 47 | M | No symptoms | ? | Intramuscular | Complete |
| 7 | Flores Robles19 | 2017 | 40 | M | Progressive | 1 | ? | Complete |
| 8 | Salama20 | 2010 | 83 | F | Acute Trauma | Parosteal | Complete | |
| 9 | Saaiq21 | 2017 | 53 | M | Progressive | 7 | Parosteal | Complete |
| 10 | Patel22 | 2018 | 66 | M | Progressive | 4 | Intraneural | Near Complete |
| 11 | Murphy23 | 2009 | 58 | M | Progressive | <1 | Intramuscular | Near Complete |
| 12 | Nishida24 | 1998 | 60 | F | Progressive | 2 | Parosteal | Complete |
| 13 | Nishida24 | 1998 | 61 | F | Progressive | ? | Parosteal | Complete |
| 14 | Ganapathy25 | 2006 | 54 | M | Progressive | 144 | Intramuscular | Near Complete |
| 15 | Colasanti26 | 2016 | 59 | F | Progressive | 6 | Intermuscular | Complete |
| 16 | Avram27 | 2004 | 69 | M | Progressive | 4 | Parosteal | Partial |
| 17 | Hamdi28 | 2010 | 59 | M | Progressive | 2 | Parosteal | Complete |
| 18 | Matsuo29 | 2007 | 60 | M | Progressive | 240 | Intraneural | Poor |
| 19 | Seki30 | 2012 | 67 | F | Progressive | 2 | Parosteal | Complete |
| 20 | Eralp31 | 2006 | 45 | M | Progressive | ? | ? | Complete |
| 21 | Fitzgerald32 | 2002 | 71 | F | Progressive | 1 | ? | No recovery |
| 22 | Fitzgerald32 | 2002 | 62 | M | Progressive | 2 | ? | Complete |
| 23 | Fitzgerald32 | 2002 | 64 | M | Progressive | 3 | ? | Complete |
| 24 | Fitzgerald32 | 2002 | 68 | F | Progressive | 5 | ? | Complete |
| 25 | Fitzgerald32 | 2002 | 63 | F | Progressive | 2 | ? | No recovery |
| 26 | Narayan33 | 2016 | 46 | F | Progressive | 6 | Parosteal | ? |
| 27 | El Hyaoui34 | 2014 | 68 | F | Progressive | 14 | Parosteal | ? |
| 28 | Borman35 | 2010 | 69 | F | Progressive | 6 | Parosteal | Partial |
| 29 | Richmond36 | 1953 | 62 | M | Progressive | 3 | Intramuscular | Near Complete |
| 30 | Bugnicourt37 | 2009 | 48 | M | Acute | ? | ? |